| " ... and organs and singing" : the organ and music of St Patrick's cathedral | Grindle, W. H. | Monograph or Collective Volume | St Patrick's Cathedral | 1991 |
| " A vestigial population"? Perspectives on Southern Irish Protestants in the twentieth century | d'Alton, Ian | Article in Journal | | 2009 |
| "A Community of Communities" - Catholic Communitarianism and Societal Crises in Ireland, 1890s-1950s | L'Estrange, Seán | Article in Journal | | 2007 |
| "A day of joy and pride" : a history of the Church of Our Lady of Lourdes | Durnin, Peter | Article in Journal | | 2000 |
| "A light to the blind" the voice of the dispossessed elite in the generation after the defeat at Limerick | Kelly, P. | Article in Journal | | 1985 |
| "A melancholy record" : the story of the nineteenth-century Irish Party Processions Acts | Maddox, Neil P. | Article in Journal | | 2004 |
| "A nation of beggars?" : priests, people and politics in famine Ireland, 1846-1852 | Kerr, Donal A. | Monograph or Collective Volume | Oxford University Press | 1994 |
| "A stable unseen power" : Dr William Drennan and the origins of the United Irishmen | Stewart, Anthony Terence Quincey, 1929-2010 | Article in Book | Blackstaff Press | 1976 |
| "A weapon of war yet untried" : Irish Catholics and the armed forces of the Crown, 1760-1830 | Bartlett, Thomas | Article in Book | Lilliput Press | 1993 |
| "A zealous Catholic and notorious trouble-maker" The Gormanston papers in the National Library of Ireland | Scally, Barbara
| Article in Journal | | 2009 |
| "Aliens and outlaws rather than subjects and citizens"? (The image and identity of) Catholics in eighteenth-century Scotland | Prunier, Clotilde | Article in Journal | | 2000 |
| "And if you know your history." An examination of the formation of football clubs in Scotland and their role in the construction of social identity | Burdsey, D.Chappell, R. | Article in Journal | | 2001 |
| "Bithiúnaigh iad uilig" : sagairt agus easpaig i 1798 | Keogh, Dáire | Article in Book | NA | 1998 |
| "Burke's political testament" : Thomas Hussey and the Irish Directory | Keogh, Dáire | Article in Book | Poolbeg | 1998 |
| "By the help of many lies" or how penal were the penal laws? | MacCarthy Mór | Article in Journal | | 1990 |
| "Clerical dictation" : reflections on the Catholic Church and the Parnell split | Callanan, Frank | Article in Journal | | 1990 |
| "De Bello Clerico" : Fr Batt O'Connor's attack on the evangelical missionaries | O'Reilly, Hugh | Article in Journal | | 2013 |
| "Different feelings" : Corktown and the Catholic Irish in early Hamilton, 1832-1847 | Holman, Andrew C. | Article in Journal | | 1997 |
| "Directions in historiography". History and Irish nationalism | English, Richard, 1963- | Article in Journal | | 2011 |
| "Disturbing the Complacency of Religion"? The Evangelical Crusades of Dr Billy Graham and Father Patrick Peyton in Britain, 1951-54 | Harris, AlanaSpence, Martin | Article in Journal | | 2007 |
| "Doesn't Mary have a lovely bottom?": Gender, sexuality and Catholic ideology in 'Father Ted' | McGonigle, Lisa | Article in Journal | | 2012 |
| "Dove of the church" : Saint Columba from seventh - and sixteenth - century perspectives | Thurlkill, Mary F. | Article in Journal | | 1993 |
| "Enter revenge" : Henry Burkhead and Cola's Furie | Coughlan, Patricia | Article in Journal | | 1990 |
| "Everything depends on the first year" : archbishop John Hughes and his fundraising plan for St. Patrick's Cathedral | Feighery, Kate | Article in Journal | | 2015 |
| "Exploited with fury on a thousand platforms" : Women, Unionism and the Ne Temere Decree in Ireland, 1908–1913 | MacPherson, D. A. J. | Article in Book | Cambridge Scholars | 2009 |
| "Facts newly 'stated' ": John Curry, the 1641 Rebellion and Catholic revisionism in eighteenth-century Ireland | Gibney, John | Article in Journal | | 2009 |
| "Father Raleigh went rapidly and amply to ruin" : Irish missionary clergy in nineteenth-century western Victoria | Blee, Jill | Article in Journal | | 2002 |
| "For a splendid cause" : Irish missionary nuns at home and on the mission field, 1921-1962 | Lynch, Kate, 1986- | Thesis | | |
| "Freedom and friendship to Ireland" : Ribbonism in early nineteenth-century Liverpool | Belchem, John | Article in Journal | | 1994 |
| "Giolla gan Eagla": Fr William Ferris (1881-1971), a 'turbulent priest' in Sliabh Luachra | McCarthy, Brendan | Article in Journal | | 2023 |
| "Go Forth as a Missionary to Fight It" : Catholic antisocialism and Irish American nationalism in post-World War I Boston | Murray, Damien | Article in Journal | | 2009 |
| "God's unfortunate people" : historiography of Irish Catholics in nineteenth-century Canada | Baker, William M. | Article in Book | Celtic Arts of Canada | 1988 |
| "Good behaviour" : Irish catholics and the Jacobite rising of 1745 | McLynn, Frank J. | Article in Journal | | 1981 |
| "Heretical plants of irish growth": Catholic critics of Mathewite temperance | Townend, Paul | Article in Journal | | 2005 |
| "Hibernians on the march" : Irish America and ethnic patriotism in the mid-twentieth century | O'Brien, Matthew J., 1968- | Article in Journal | | 2005 |
| "How the Irish Paid their Debt" : Irish Catholics in Scotland and Voluntary Enlistment, August 1914-July 1915 | McFarland, Elaine W. | Article in Journal | | 2003 |
| "I have been trying very hard to be powerful 'nice'..." : the correspondence of Sister M. de Sales (Brennan) during the American Civil War | Quinn, E. Moore | Article in Journal | | 2010 |
| "If one is lonely one prefers discomfort". The lives of John Broderick | Guy, Peter D. | Article in Journal | | 2008 |
| "Imperium in Imperio" : Irish Episcopal Imperialism in the Nineteenth Century | Barr, Colin | Article in Journal | | 2008 |
| "It is for a nation of martyrs to cultivate constant self-restraint." The Irish Catholic bishops' attitude to the IRA campaign, 1919-21 | Heffernan, Brian | Article in Journal | | 2008 |
| "JKL" : James Doyle bishop of Kildare and Leighlin (1786-1834) | Evans, Mairead | Article in Journal | | 2003 |
| "Late vocation" | Cavanagh, Frank | Article in Journal | | 1996 |
| "Mickeys and demons" vc 'bigots and boobies' : the Woodstock riot of 1847 | See, S. W. | Article in Journal | | 1991 |
| "More Irish than the Irish themselves"? The "Anglo-Irish" in Tudor Ireland | Ellis, Steven G., 1950- | Article in Journal | | 1999 |
| "No remedy more proper" : Anglo-Irish unionism before 1707 | Smyth, Jim | Article in Book | Cambridge University Press | 1998 |
| "Nothing is so bad for the Irish as Ireland alone": William Keogh and Catholic loyalty | Keogh, Richard A. | Article in Journal | | 2012 |
| "Old St Peter's" Athlone 1795-1937 | Canavan, Kitty | Article in Journal | | 1992 |
| "Only one class of people to draw upon for support" : Irish-Americans and the Archdiocese of New York | Shelley, Thomas | Article in Journal | | 2001 |
| "Our Country's Heroes" : Irish Catholics in Scotland and the Great War | McFarland, Elaine W. | Article in Book | John Donald | 2008 |
| "Our nuns are not a nation" : politicizing the convent in Irish literature and film | Cullingford, Elizabeth Butler | Article in Journal | | 2006 |
| "Patriots, Protestants and Papists" : religion and the ascendancy 1714-1760 | McCoy, Gerard | Article in Journal | | 1994 |
| "People v. Philips" in light of contemporary developments in Ireland and the U. S. | McMahon, Bryan | Article in Journal | | 2014 |
| "People v. Philips" in light of contemporary developments in Ireland and the U.S. | McMahon, Bryan | Article in Journal | | 2014 |
| "Perfidious machiavellian friar" : Florence Conry's campaign for a Catholic restoration in Ireland, 1592-1616 | O'Connor, Thomas | Article in Journal | | 2002 |
| "Should I take myself and family to another religion [?]" : Irish Catholic women, protest and conformity, 1920-1940 | Earner-Byrne, Lindsey | Article in Book | Palgrave Macmillan | 2015 |
| "So manie in the verie prime and spring of their youth, manie of them heirs of lande" : the friars of the Irish Capuchin mission in northern France and the Low Countries | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | Colin Smythe | 1991 |
| "Soli deo gloria": Catholic church music in Limerick c.1860-c.1950 | Collins, Paul | Article in Journal | | 2010 |
| "Staging a lie" : Boston Catholics and the new Irish drama | Kane, Paula M. | Article in Book | Leicester University Press | 1996 |
| "Sturdy Catholic emigrants" : the Irish in early Victorian Birmingham | Chinn, Carl | Article in Book | Four Courts Press | 1999 |
| "The Abbey" : an appreciation of Loreto Abbey, Rathfarnham | Dempsey, Anne | Monograph or Collective Volume | The Community of Loreto Abbey | 1999 |
| "The beleaguered fortress", St Patrick's College, Thurles, 1837-1988 | O'Dwyer, Christopher | Article in Book | Geography Publications | 1989 |
| "The designs of providence" : race, religion and Irish insanity | Walsh, Oonagh | Article in Book | Routledge | 1999 |
| "The distinction is a fine but a real one". Sectarianism in county Clare during the War of Independence | Ó Ruairc, Pádraig Óg | Article in Journal | | 2010 |
| "The gates were shut" : Catholics, chapels, and power in late nineteenth-century Ireland | Delay, Cara | Article in Journal | | 2010 |
| "The Greatest Man in Wales" : James ap Gruffydd ap Hywel and the International Opposition to Henry VIII | Marshall, Peter, 1964- | Article in Journal | | 2008 |
| "The Ireland that I would have" : De Valera & the creation of an Irish national image | Dowling, Michele | Article in Journal | | 1997 |
| "The lost British lamb" : English Catholic exiles and the problem of Britain | Highley, Christopher | Article in Book | Cambridge University Press | 2002 |
| "The madness of party" : Sectarian homicide in Ireland, 1801-1850 | McMahon, Richard | Article in Journal | | 2007 |
| "The pattern of the flock" : John Thomas Troy, 1786-1823 | Keogh, Dáire | Article in Book | Four Courts Press | 2000 |
| "The right to labour, love and pray" : the creation of the ideal Christian woman in Ulster Roman Catholic and Protestant religious literature, 1850-1914 | Brozyna, Andrea Ebel | Article in Journal | | 1997 |
| "The ties that bind" : Irish Catholic testamentary evidence from Christchurch, 1876-1915 | Fraser, Lyndon | Article in Journal | | 1995 |
| "The village curate" : reflections and recollections | O'Reilly-Hyland, Kathleen | Monograph or Collective Volume | Kathleen O'Reilly-Hyland | 1994 |
| "Their colonial condition" : Connections between French-Canadians and Irish Catholics in the 'Nation' and the 'Dublin University Magazine' | King, Jason | Article in Journal | | 2007 |
| "These people never seem to lose their charm": Calum Iain Maclean in Clonmel | Wiseman, Andrew | Article in Journal | | 2012 |
| "They all seem to have inherited the horrible ugliness and sewer filth of sex": Catholic guilt in selected works by John McGahern (1934-2006) | Maher, Eamon | Article in Journal | | 2014 |
| "Though hereticks and politicians should misinterpret their good zeale" : political ideology and Catholicism in early modern Ireland | Ó hAnnracháin, Tadhg | Article in Book | Cambridge University Press in association with the Folger Institute, Washington, DC | 2000 |
| "Three cheers for the Union" : Catholic chaplains and Irish loyalty during the American Civil War | Endres, David J. | Article in Journal | | 2021 |
| "To do and to teach" : a history of the Christian Brothers in Tipperary town, 1868-1994 | Marnane, Denis G. | Monograph or Collective Volume | The Friends of the Christian Brothers | 1994 |
| "True men as we need then" : Catholicism and the Irish-American male | McDannell, Colleen | Article in Journal | | 1986 |
| "Un pueblo unido..." : the politics of Philip O'Sullivan Beare | Morgan, Hiram | Article in Book | Consejo Superior de Investigaciones Cientificas | 2002 |
| "Underhand Dealings with the Papal Authorities" : Disraeli and the Liberal Conspiracy to Disestablish the Irish Church | Kennedy, Padraic C. | Article in Journal | | 2008 |
| "Unwearied investigations and interminable correspondence" : the churches and clerical work in improving housing conditions for Irish migratory potato workers in Scotland | Holmes, Heather | Article in Journal | | 2000 |
| "We Are Alienating the Splendid Irish Race" : British Catholic Response to the Irish Conscription Controversy of 1918 | Taouk, Youssef | Article in Journal | | 2006 |
| "We have a strong city" : politicised Protestantism, evangelicalism and the siege myth in early nineteenth-century Derry | McGovern, Mark | Article in Book | Four Courts Press | 2001 |
| "We here in Ireland are not outside this struggle": the Irish Catholic Church, anti-communism and the Cold War, 1945-1965 | Madden, Gerard | Thesis | | 2018 |
| "Were you at the rock?" the history of mass rocks in Ireland | Nugent, Anthony | Monograph or Collective Volume | Liffey Press | 2013 |
| "What a fool I have been" : Fr. Robert O'Keeffe, parish priest and the Callan controversy 1869-1881 | Hogan, Patrick | Article in Book | Philip P. Lynch in co-operation with Callan Heritage Society | 2010 |
| "When they persecute you in one state, flee ye to another" : petition to Pope Pius the Ninth by potential Irish emigrants to Brazil | | Article in Journal | | 2006 |
| ' Backsliders from the Protestant religion': Apostasy in the 1641 Depositions [with index] | | Article in Journal | | 2012 |
| '...it would be preposterous to bring a Protestant here' : religion, provincial politics and district nurses in Ireland, 1890-1904 | Breathnach, Ciara | Article in Book | Institute of Historical Research | 2015 |
| '98 in Carlow | Mac Suibhne, Peadar | Monograph or Collective Volume | The Nationalist | 1974 |
| 'A Beacon in the Twilight': Matthew Russell, S.J. and the 'Irish Monthly' | O'Keefe, Declan | Article in Journal | | 2010 |
| 'A blessed and ever-enduring fellowship' : the development of John Henry Newman's thought on death and the life beyond | Tolhurst, James | Article in Journal | | 1995 |
| 'A case of great peculiarity and novelty': the Blackrockm Convent, Cork versus the McCarthy family in the House of Lords, 1848 | Morrogh, Michael McCarthy | Article in Journal | | 2017 |
| 'A cold house for Catholics'? The consolidation of the Northern Ireland state in the 1920s | Campbell, Sarah | Article in Book | Irish Academic Press | 2015 |
| 'A deed agreeable to God': Andrija Artukovic and Croat Ustaše connections with Ireland | Kennedy, Michael (Michael J.) | Article in Journal | | 2014 |
| 'A few good canons?' : Canon Ulick Bourke and clerical reaction to the outbreak of the Land War | Faherty, Shane | Article in Book | History Press | 2013 |
| 'A most unenviable reputation' : the Christian Brothers and school discipline over two centuries | Coldrey, Barry | Article in Book | Crossing Press | 1995 |
| 'A noble church in the most Catholic quarter of a bitterly Protestant and Presbyterian city': the Church of the Most Holy Redeemer, Clonard, West Belfast | McGee, Caroline M. | Article in Book | Irish Academic Press | 2013 |
| 'A peculiar people in their own land': Catholic social theory and the plight of rural Ireland | Ferriter, Diarmaid | Thesis | | 1996 |
| 'A Presentment of Recusants, East Galway, 1632' | Smyth, Michael | Article in Journal | | 2009 |
| 'A very brisk month of canvassing and caucusing.' Episcopal appointments in the diocese of Limerick 1825-1917 | Tobin, Matthew | Article in Journal | | 2004 |
| 'A weighty, serious business' : the conversion of Catholic clergy to Anglicanism | Power, Thomas P. | Article in Book | Four Courts Press | 2005 |
| 'Abandon Hibernicisation' : priests, Ribbonmen and an Irish street fight in the north-east of England in 1858 | MacRaild, Donald M. | Article in Journal | | 2003 |
| 'Among school children' : the churches, politics and Irish schooling, 1830-1930 | Raftery, Deirdre | Article in Journal | | 2011 |
| 'An ambiguous awe' : Paul Cullen and the historians | Barr, Colin | Article in Book | Four Courts Press | 2011 |
| 'An Ark in the Deluge' : Multyfarnham Abbey and the Nugents of Delvin, 1607-41 | Hazard, Benjamin | Article in Journal | | 2011 |
| 'An creideamh agus Ghaeilge fite fuaite ina chéile' | Ua Cnáimhsí, Pádraig | Article in Book | Coiscéim | 1996 |
| 'An example of the rehabilitation of her sex' : contextualising the founding and early mission message of the Holy Rosary Sisters from Killeshandra, County Cavan, 1924-1949 | Finnegan, Michael | Article in Book | Geography Publications | 2014 |
| 'An ordinary commonplace outbreak of everyday dirty bigotry' : Walter Dwyer and the St. Patrick's Day procession in Perth, 1915 | Mortimer, Maureen | Article in Journal | | 2005 |
| 'And soe let us goe and spare not'. Thomas Wentworth's quest for uniformity and the implications for the Catholic and Protestant churches in Ireland, c.1621-1634 | Empey, Mark | Article in Journal | | 2005 |
| 'As Catholic as the pope' : James Connolly and the Roman Catholic church in Ireland | Newsinger, John | Article in Journal | | 1986 |
| 'As legacie upon my soule' : the wills of the Irish Catholic community, c.1550-c.1660 | Tait, Clodagh | Article in Book | Four Courts Press | 2006 |
| 'Attending to the wants of poverty' : Paul Cullen, the relief of poverty and the development of social welfare in Ireland | Crossman, Virginia | Article in Book | Four Courts Press | 2011 |
| 'Bethlehem' : the Dillons and the Poor Clare convent at Ballinacliffey, Co. Westmeath | Cunningham, Bernadette | Article in Journal | | 2013 |
| 'Between the army and the altar': the function of folk narrative and the image of Geoffrey Keating | Fitzgerald, Kelly | Article in Journal | | 2014 |
| 'Between the Devil and the Deep Blue Sea' : Irish Women, Catholicism and Colonialism | Rossiter, A. | Article in Book | | 1992 |
| 'Bishop in the dock' : the sedition trial of James Liston | Sweetman, Rory | Article in Book | Crossing Press | 1995 |
| 'Brunswick bloodhounds and itinerant demagogues' : the campaign for Catholic Emancipation in County Armagh, 1824-29 | MacAtasney, Gerard | Article in Journal | | 2008 |
| 'Bulwark of the nations': Paul Cullen, the Christian Brothers, and the evangelization of an Irish empire | Keogh, Dáire | Article in Book | Four Courts Press | 2012 |
| 'By reason of those troublesome times': The War of the Two Kings and Father Edward Ffrench | | Article in Journal | | 2011 |
| 'Croagh Patrick' the holy mountain of Ireland | Blackwell, Meike | Monograph or Collective Volume | The author | 1983 |
| 'Cumhaidh na cléire', a '98 poem from north Leitrim | Ó Mórdha, Séamus | Article in Journal | | 1958 |
| 'Darkness must be expell'd by letting in the light' : Bishop Francis Hutchinson and the conversion of Irish Catholics by means of the Irish language, c. 1720-4 | Sneddon, Andrew | Article in Journal | | 2004 |
| 'Disappointing the boundless ambition of France': Irish Protestants and the fear of invasion, 1661-1815 | Kelly, James, 1959- | Article in Journal | | 2011 |
| 'Dividing the bear's skin before she is taken' : Irish Catholics and land in the late Stuart monarchy, 1683-91 | Kinsella, Eoin | Article in Book | Ashgate | 2008 |
| 'Don John Conmee' and the Jesuit link between James Joyce and Australia | O'Sullivan, Richard | Article in Journal | | 2008 |
| 'Down with Dublin' - Frank Gibney and the role of Dublin in the vision of the nation | McCabe, Fergal | Article in Journal | | 2019 |
| 'Drowning the shamrock' : drink, teetotalism, and the Irish Catholics of Gilded-Age Pittsburgh | Walsh, Victor A. | Article in Journal | | 1990 |
| 'Eagla an Ghallsmacht': the religion and politics of Irish catholics,1620s-1670s | Kennedy, Mary Catherine | Thesis | | 1987 |
| 'Eternity is not long enough nor hell hot enough...' The Catholic Church and Fenianism | Rafferty, Oliver P. | Article in Journal | | 2008 |
| 'Exercising a close vigilance over their daughters': Cork women, American sailors, and Catholic vigilantes, 1917-18 | Borgonovo, John | Article in Journal | | 2012 |
| 'Faith & fatherland' in sixteenth-century Ireland | Morgan, Hiram | Article in Journal | | 1995 |
| 'Faithful Children of the Holy See': The Defence Forces Chaplaincy Service, 1945-59 | Hartigan, Maurice | Article in Journal | | 2023 |
| 'Farewell Spain': Kate O'Brien's elegy to war-torn Spain | Mittermaier, Ute Anna | Article in Journal | | 2013 |
| 'Filium Illegitium': Illegitimacy data for the Diocese of Waterford and Lismore | Purcall, Clíona | Article in Journal | | 2019 |
| 'from education, from duty, and from principle' : Irish Catholic loyalty in context, 1829-1874 | Keogh, Richard A. | Article in Journal | | 2017 |
| 'Giant and brutal islanders' : the Italian response to the Irish Papal Brigade | O'Connor, Anne | Article in Book | | 2014 |
| 'Good fences make good neighbours': fabricated crime and religious tension in pre-Famine King's County | Hartigan, Robert | Article in Journal | | 2015 |
| 'Grace and favour' : the Cabal ministry and Irish Catholic politics, 1667-73 | Creighton, Anne | Article in Book | | 2008 |
| 'Have your children got leave to speak?' the teacher training of New Zealand Dominican Sisters, 1871-1965 | Collins, Jenny | Article in Book | | 2016 |
| 'Honest Pat' - Patrick Crumley DL, MP | McRoe, Malachy | Article in Journal | | 2011 |
| 'Hurrah for old Ireland!' : Irish Catholicism at the Cape of Good Hope | Barr, Colin | Article in Book | | 2015 |
| 'I am building a house': Nano Nagle's Georgian convents | Castle, JessieO'Brien, Gillian | Article in Journal | | 2016 |
| 'I kept my design a profound secret': the nature and impact of the educational provisions of the Penal Laws | Kelly, James, 1959- | Article in Journal | | 2019 |
| 'Immensity confined' : Luke Waddinge, bishop of Ferns | Murphy, Celestine | Article in Journal | | 1988 |
| 'In what orbit we shall find ourselves, no one could predict': institutional reform, the university merger and ecclesiastical influence on Irish higher education in the 1960s | Nolan, AnnWalsh, John | Article in Journal | | 2017 |
| 'Inoperative but insulting' : residues of the penal laws, 1829-1920 | Costello, Kevin | Article in Book | | 2021 |
| 'Ireland's destiny is in the making' : the impact of the anniversary celebrations of 1929 and 1932 on the religious character of Ireland | Moffitt, Miriam | Article in Book | | 2015 |
| 'Irish Protestants feel this betrayal keenly' : Home rule, Rome rule and nonconformity | Megahey, Alan | Article in Book | | 2004 |
| 'It's not as simple as that' : the expression of the Catholic and Protestant boundary in Northern Irish rural communities | McFarlane, Graham | Article in Book | | 1986 |
| 'Learned, attached and reliable' : Luke Wadding, agent of the Spanish monarchy | Pérez Tostado, Igor | Article in Book | NA | 2020 |
| 'Let the Damn Protestants do the Enlisting': The T.C. Beirne libel case in Brisbane, 1916-17 | Sullivan, RobinSullivan, Rodney | Article in Journal | | 2018 |
| 'Merry in God' (Father William Doyle, S. J.) | Anonymous | Monograph or Collective Volume | Longmans | 1939 |
| 'Miraculous meddlers': the Catholic Action movement | Curtis, Maurice | Article in Journal | | 2010 |
| 'Most vicious and refractory girls' : the reformatories at Ballinasloe and Monaghan | Curtin, Geraldine | Article in Journal | | 2013 |
| 'My experiences in the 1916 Rising' by Father Columbus Murphy, O,F,S,C, 29 July 1916 | Murphy, Columbus, O.F.S.C. | Article in Journal | | 2016 |
| 'Neither an Papist nor a Piper': the Jacobite roots of the abhorrence of bagpipes at Bandon, | Donnelly, Sean | Article in Journal | | 2015 |
| 'New and elegant chapels, either built or in the act of building' : St John the Baptist, Cashel, and Catholic architecture in an era of relief and reform | NicGhabhann Coleman, Niamh | Article in Journal | | 2024 |
| 'New wine in old bottles' : implementing Trent in early modern Ireland | Ryan, Salvador | Article in Book | | 2007 |
| 'No good Catholic can be a true socialist' : the Labour party and the Catholic Church, 1922-52 | Ferriter, Diarmaid | Article in Book | | 2012 |
| 'Nolumus mutari' : time for change at King's Inns? | Kenny, Colum | Article in Journal | | 2005 |
| 'Not ... an equal, but ... one of his subjects' : John Henry Newman's perception of the archbishop of Dublin | Ker, Ian | Article in Book | | 2011 |
| 'Objects of raging detestation': the Charter Schools | Kahn, Helena Kelleher | Article in Journal | | 2011 |
| 'Our sacred and civil obligations as Christians and as citizens': religion, charity and governance in early nineteenth-century Dublin and Edinburgh | Curran, Joe | Article in Journal | | 2023 |
| 'Papists' oder 'Roman Catholic citizens' zum toleranz und frühen Katholikenemanzipation auf der Britischen Inseln im 18 Jahrhundert | Hammermayer, Ludwig | Article in Book | | 1976 |
| 'Perge, signifer' - or, where did William Maginn stand? | Latané, David E. | Article in Book | | 2005 |
| 'Playing games with history' : Arthur Donnelly, first elected Catholic representative in Lurgan | Cook, David S. | Article in Journal | | 2013 |
| 'Pope's parish' : Liscannor/Moymore, Dioc. of Kilfenora, Co. Clare | Lee, Robert E., Rev. | Monograph or Collective Volume | NA | 2003 |
| 'Pro Fide et Patria', but for Europe: "Iris Hibernia" and a Swiss-led vision for European Ireland | White, Jerry | Article in Journal | | 2022 |
| 'Quenching the Prairie Fire'. The collapse of the Gaelic Athletic Association in 1890s Ireland | McElligott, Richard | Article in Journal | | 2014 |
| 'Rebell privy counsellors' : the first Catholic confederate supreme council, July 1642 | McHugh, Jason | Article in Journal | | 2015 |
| 'Replant the uprooted trunk of the tree of faith' : the Society of Jesus and the continental colleges for religious exiles | McCoog, Thomas M. | Article in Book | | 2013 |
| 'Resigned to take the bill with its defects' : the Catholic Church and the third Home Rule bill | Ó Corráin, Daithí | Article in Book | | 2014 |
| 'Roma locuta, causa finita?' : the perception, interpretation and implementation of conciliar and post-conciliar directives regarding liturgical music in Ireland, 1962-92 | Phelan, Helen | Article in Book | | 1996 |
| 'Second spring' and 'precious prejudices' : Catholicism and anti-Catholicism in Hampshire in the era of emancipation | Matthews, Shirley | Article in Book | | 2005 |
| 'So grand on ....' | Kiely, Benedict | Article in Journal | | 1946 |
| 'So many wheels within wheels' : the 1793 Catholic Relief Act revisited | Bartlett, Thomas | Article in Book | | 2016 |
| 'Srong views ... in very strong forms' : Paul Cullen, archbishop of Armagh, 1849-52 | Macaulay, Ambrose | Article in Book | | 2011 |
| 'Statement issued by the Cardinal Primate and the archbishops and bishops of Ireland on the present condition of their country' (1920) | Waldron, Kieran
| Article in Journal | | 2021 |
| 'Studies' and the shadow of Modernism | Rafferty, Oliver P. | Article in Journal | | 2011 |
| 'Supernatural manifestations accompanied by cures' - the phenomenon of the Templemore miracles 1920 | Reynolds, John | Article in Journal | | 2012 |
| 'Supernatural manifestations accompanied by cures' -the phenomenon of the 'Templemore miracles', 1920 | Reynolds, John | Article in Journal | | 2009 |
| 'That noble struggle' : Irish Conservative attitudes towards the Risorgimento, c. 1848-70 | Shields, Andrew | Article in Book | | 2014 |
| 'That nost serious duty' : Catholic preaching in Ireland, 1760-1840 | Ryan, David Edward | Thesis | | 1998 |
| 'The angel of Andersonville' : Father Peter Whelan (1802-70) | Gleeson, David T. | Article in Book | | 2015 |
| 'The Bottom Dog and the Bishop's Crozier' : the Catholic hierarchy and the trade union movement in Limerick, 1916-22 | Haugh, Dominic | Article in Journal | | 2006 |
| 'The Cat's Paw': Helen Arthur, the act of resumption and 'The Popish pretenders to the forfeited estates in Ireland', 1700-03 | Nolan, Frances | Article in Journal | | 2018 |
| 'The lady ... God intends for my wife' : letter from M[ichael] Murphy [to Dr Edward Thomas O'Dwyer, bishop of Limerick (1886-1917) on 'mixed marriage' | Bracken, David | Article in Book | | 2019 |
| 'The Law of God': the Catholic Church and the Northern Ireland conflict, 1968-1977 | Andersen, Nina V. | Thesis | | 2016 |
| 'The leaven of your forepassed wicked lives purged' : excommunication and exile in part 1 of David Rothe's Analecta (1616) | Hand, Stephen | Article in Journal | | 2012 |
| 'The music of the 'Pass' | Halliday, Andrew | Article in Journal | | 1993 |
| 'The tree of liberty' : radicalism, Catholicism, and the construction of Irish identity 1760-1830 | Whelan, Kevin | Monograph or Collective Volume | Cork University Press | 1996 |
| 'The true father of confederation'? : Archbishop E. P. Roche, Term 17, and Newfoundland's confederation with Canada | Fitzgerald, John Edward | Article in Journal | | 1998 |
| 'The unpopular front': the Catholic renewal and Irish cultural identity, 1932-1948 | Riordan, Susannah | Thesis | | 1991 |
| 'The widow's mite': private relief during the Great Famine | Kinealy, Christine | Article in Journal | | 2008 |
| 'There are tears in their numbers' : famine relief for Ireland, 1847-84 | Neville, Grace | Article in Journal | | 2014 |
| 'There is an isle in the western ocean' : the Christian Brothers, Our Boys and catholic/nationalist ideology | Flanagan, Michael | Article in Book | | 2006 |
| 'Though I abominate your superstitions, I love your person': Parson Nathaniel Hooke, Father Ambrose Grymes and a sermon to mark James II's coronation preached in Brussels, 23 April 1685(OS) | Byrne, Thomas | Article in Journal | | 2017 |
| 'Time, energy and brass' : why 'Studies' did not fail | O'Keeffe, Declan | Article in Journal | | 2017 |
| 'True Brittons and real Irish' : Irish Catholics in the British Army during the Revolutionary and Napoleonic Wars | Kennedy, Catriona | Article in Book | | 2013 |
| 'Undiluted materialism and principles undermining all morality'. The lecturers, the Teachers' College and the Catholic Church | Hammer, Merril | Article in Journal | | 2004 |
| 'Unrelenting deference'? Official resistance to Catholic moral panic in the mid-twentieth century | Ferriter, Diarmaid | Article in Journal | | 2010 |
| 'We hope that the tempest is soon calmed' - early Irish Jesuits | Moynes, Vera | Article in Journal | | 2018 |
| 'We know neither Catholics nor Protestants nor free-thinkers here' : ethnicity, religion and the Chicago public schools, 1837-94 | Cowan, Mimi | Article in Book | | 2015 |
| 'Where war is within' : Hopkins, the English soldier-poet in Ireland | White, Norman | Article in Journal | | 1990 |
| 'Why have a Catholic hospital at all?' the Mater Infirmorum Hospital, Belfast, and the state, 1883-1972 | Martin, Peter | Article in Book | | 2015 |
| 'With much quiet fervour' : A brief history of Dunlavin Roman Catholic parish and St. Nicholas of Myra church | Lawlor, Chris | Monograph or Collective Volume | Chris Lawlor | 2018 |
| 'Zeal for God and for souls' : Counter-Reformation preaching in early seventeenth-century Ireland | Cunningham, Bernadette | Article in Book | Four Courts Press | 2001 |
| (Obituary) Fr. James Coombes | Ó Murchadha, Diarmuid | Article in Journal | | 2001 |
| + Kevin : a portrait of Archbishop Kevin McNamara | Power, Louis | Monograph or Collective Volume | Blackwater | 1993 |
| 10 October 1922: The Bishops Condemn the Republican Campaign : Weaponising The Sacraments: The Roman Catholic Church and Civil War | Ó Corráin, Daithí | Article in Book | | 2022 |
| 120 years of the Christian Brothers in Charleville, 1866-1986 | O'Riordan, Ted | Article in Journal | | 1987 |
| 1241-1991 : 750th anniversary of the founding of the Dominican priory of Saints Peter and Paul, Athenry | Rynne, Etienne | Monograph or Collective Volume | Athenry Historical Society | 1991 |
| 1641 and the quest for Catholic emancipation, 1691-1829 | Hill, Jacqueline R. | Article in Book | | 1993 |
| 1641 Depositions | | Website | Trinity College Dublin. Department of History. | 2009 |
| 1641 Depositions. Volume I: Armagh, TCD, MS 836; Louth, TCD, MS 834; Monaghan, TCD, MS 834 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2014 |
| 1641 Depositions. Volume II : Cavan, TCD, MS 832 & MS 833; Fermanagh, TCD, MS 835 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2014 |
| 1641 Depositions. Volume III : Antrim, TCD, MS 838; Derry, TCD, MS 839; Donegal, TCD, MS, 839; Down, TCD, MS 837; Tyrone, TCD, MS 839 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2014 |
| 1641 Depositions: Volume V - Kildare, TCD, MS 813; Meath, TCD, MS 816 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2019 |
| 1641 Depositions; volume IV; Dublin, TCD, MS 809 & TCD, MS 810, Miscellaneous associated papers, TCD, MS 840 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2017 |
| 1798 claimed for Catholics : Father Kavanagh, Fenians and the centenary celebrations | Kinsella, Anna | Article in Book | | 1996 |
| 17th century letters of a northern Dominican | Robb, C. J. | Article in Journal | | 1945 |
| 1916 - revolution and religion | Whyte, John | Article in Book | | 1967 |
| 1922 Executions recalled | Pigott, John | Article in Journal | | 1997 |
| 19th century images of Hartford's Irish-Catholic community (1827-1861) | Duffy, Joseph | Article in Journal | | 1986 |
| 3 days in September : when the pope came to Ireland | | Monograph or Collective Volume | Liberties Press | 2004 |
| 40th anniversary of the Church of St Laurence O'Toole | Sobolewski, Peter | Article in Journal | | 2009 |
| 50 years a priest | Rogers, Pat | Article in Journal | | 2018 |
| 50 years of the Catholic Social Service Conference : a brief history | Purcell, Mary | Monograph or Collective Volume | Catholic Social Service Conference | 1991 |
| 6 February 1922: Pius XI Ascends to the Papacy
Religion, Graffiti and Political Imprisonment | McAtackney, Laura | Article in Book | | 2022 |
| 75 years of the Legion of Mary | Kennedy, Kieran A. | Article in Journal | | 1997 |
| A 'Catholic Wind' on Bantry Bay? | Kennedy, Gordon | Article in Journal | | 2017 |
| A 'Fair chance'? The Catholic Irish Brigade in the British Service, 1793-1798 | McDonnell, Ciarán | Article in Journal | | 2016 |
| A 'most vainglorious man' : the writings of Antonius Bruodin | McInerney, Luke | Article in Journal | | 2017 |
| A 'penal' crucifix from 1721 | Ó Fearghail, Feargus ; Walsh, Jim | Article in Book | Slieverue Parish Pastoral Council | 2001 |
| A 'Protestant folk'? Addressing a historical imbalance in Irish folklore-collecting | Nuttall, Deirdre ; MacCarthaigh, Críostóir | Article in Journal | | 2017 |
| A 17th century mass book | Cloney, Sean | Article in Journal | | 1995 |
| A bedside book of Irish saints | Roche, Aloysius | Monograph or Collective Volume | Browne and Nolan | 1941 |
| A biographical directory of 19th century Catholic clergy from the parish of Lower Creggan, County Armagh | McConville, Kieran | Article in Journal | | 2011 |
| A biographical directory of 19th century Catholic clergy from the Parish of Upper Creggan, Archdiocese of Armagh | McConville, Kieran | Article in Journal | | 2013 |
| A bishop for the shortest time: Bernard Finegan (1837-1887) | Kelly, Liam | Article in Journal | | 2021 |
| A Bishop of penal times: the life and times of John O'Brien, Bishop of Cloyne and Ross, 1701-1769 | Coombes, James | Monograph or Collective Volume | Tower Books | 1981 |
| A bishop of the MacCarthy's : Dr Florence MacCarthy (1761-1810) | Walsh, T. J. | Article in Journal | | 1951 |
| A bishop of the penal times : being letters and reports of John Brenan, bishop of Waterford (1671-93) and archbishop of Cashel (1677-93) | | Monograph or Collective Volume | Cork UP | 1932 |
| A brave new world : the Irish agrarian colony of Benedicta, Maine in the 1830's and 1840's | McCarron, Edward T. | Article in Journal | | 1994 |
| A Bride in Tallow, 1941-1942 | McIntyre, Brigid | Article in Journal | | 2018 |
| A brief account ... of the causes ... of the Irish rebellion ... 1641 | [Curry, John] | Monograph or Collective Volume | | 1747 |
| A brief sketch of the early history of the Catholic Church on the island of New York | Bayley, James R. | Monograph or Collective Volume | United States Catholic Historical Society | 1973 |
| A broken hallelujah : the making of a Christian Brother | Leavy, Lorcan | Monograph or Collective Volume | History Press | 2011 |
| A Butler endowment at Paris university | Butler, Theobald Blake | Article in Journal | | 1980 |
| A calendar of the letters of Thomas Bray, Archbishop of Cashel, 1792-1820 | Meagher, Mary T. | Thesis | | 1966 |
| A calendar of the missionary correspondence of All Hallows, Dublin, 1842-77 | Murray, Patrick, Rev. | Thesis | | 1956 |
| A calendar of the papers of Michael Slattery, archbishop of Cashel, 1834-57 | Tierney, Mark | Thesis | | 1965 |
| A candle was lit : life of Mother Mary Aikenhead | Butler, Margery Bayley | Monograph or Collective Volume | Clonmore & Reynolds | 1953 |
| A Capuchin poet of the Jacobite wars | Walsh, T. J. | Article in Journal | | 1953 |
| A Carlow M. P., Sir John Acton | Brophy, P. J. | Article in Journal | | 1951 |
| A Castilian-Regalist cradling : Spanish-Habsburg formation of the early Irish Counter Reformation | Downey, Declan M. | Article in Book | | 2006 |
| A Catholic burial in Tynan parish in June 1829, following Emancipation | Gilmore, Brian | Article in Journal | | 2015 |
| A Catholic centenary | K., B. | Article in Journal | | 1946 |
| A Catholic college : U.C.C. in the 1940s and 1950s | Murphy, John A. | Article in Journal | | 1988 |
| A Catholic funeral in County Down, 1617 | Mac Cuarta, Brian | Article in Journal | | 2006 |
| A Catholic Unionist : the life and times of William Monsell, first Baron Emly of Tervoe (1812-1894) | Potter, Matthew | Monograph or Collective Volume | M. Potter | 1994 |
| A Catholic unionist: the life and times of William Monsell, first Baron Emly of Tervoe, 1812-1894 | Potter, Matthew | Thesis | | 2001 |
| A Catholic's secret counsel to the British government on his Irish church | Hachey, Thomas E. | Article in Journal | | 1973 |
| A celebrated eighteenth-century preacher in Dublin | Ó Súilleabháin, Pádraig | Article in Journal | | 1966 |
| A Census from the Catholic Parish of Paulstown-Goresbridge, Co. Kilkenny c.1872-1873 | Flood, Mary | Article in Journal | | 2022 |
| A century and more of reaching out : an historical sketch of the Parish of St. Paul the Apostle | Scott, Joseph | Monograph or Collective Volume | The Missionary Society of St. Paul the Apostle in the State of New York | 1983 |
| A century of prayer 1893-1993 : Poor Clare Monastery, Perpetual Adoration, Graiguecullen, Carlow | Poor Clare Monastery, Graiguecullen, Carlow | Monograph or Collective Volume | Poor Clares | 1993 |
| A challenge to democracy : militant Catholicism in modern Ireland | Curtis, Maurice | Monograph or Collective Volume | History Press | 2010 |
| A channel of peace : the story of the Corrymeela Community | Davey, Ray | Monograph or Collective Volume | Marshall Pickering|Zondervan | 1993 |
| A Church destroyed, the Church restored: France's Irish Catholicism | Deane, Seamus | Article in Journal | | 2011 |
| A clerical dogfight, 1767-1772 : the appointment of Archbishop James Butler II of Cashel | Moloney, John | Article in Journal | | 1983 |
| A comparative study of the lives of Church of Ireland and Roman Catholic clergy in the south-eastern dioceses of Ireland from 1550 to 1650 | Hensey, Áine | Thesis | | 2012 |
| A complete Catholic directory, almanack, and registry | [Battersby, W. J.] | Monograph or Collective Volume | | 1836 |
| A conduit to baleful modernity? Church responses to youth culture 1956-1973 | Holohan, Carole | Article in Journal | | 2005 |
| A Corkman and a controversial bible : McNamara and the Rhemish notes | Bateman, Dilys | Article in Journal | | 1994 |
| A criminal profile of the Liverpool Irish | Neal, Frank | Article in Journal | | 1991 |
| A curious middle place : the Irish in Britain, 1871-1921 | Fitzpatrick, David | Article in Book | | 1989 |
| A database of Catholic priests reported to be in south-eastern Ireland, 1557-1650 [with index] | Hensey, Áine | Article in Journal | | 2015 |
| A day in the life of Father Luke Wadding | Mooney, Canice | Article in Journal | | 1957 |
| A demographic and social profile of Quebec city's Irish populations, 1842-1861 | Grace, Robert J. | Article in Journal | | 2003 |
| A description of the Marward stone at Skyrne and a description of John Cusack who sculptured it | Hickey, Elizabeth | Article in Journal | | 1973 |
| A dictionary of the Catholic clergy of the diocese of Clogher (1535-1835) | Ó Gallachair, Pádraig | Article in Journal | | 1968 |
| A discreet benevolence : female philanthropy and the Catholic resurgence in eighteenth-century Ireland | Raughter, Rosemary | Article in Journal | | 1997 |
| A distinguished son of Leighlinbridge : Fr William Delany, S.J. (1835-1924) | Morrissey, Thomas J. | Article in Journal | | 1984 |
| A divided community : the effect of cultural divisions | Robb, John | Article in Book | | 1992 |
| A document concerning the Irish Privy Council's policy towards Catholicism (1629) | Mac Cuarta, Brian | Article in Journal | | 2009 |
| A dominant church : the diocese of Achonry 1818-1960 | Swords, Liam | Monograph or Collective Volume | Columba | 2004 |
| A Donegal priest who achieved greatness in the new world | King, C. A. | Article in Journal | | 1985 |
| A Dublin convert roll : the diary of the Rev. P. E. O'Farrelly | O'Connell, Philip | Article in Journal | | 1949 |
| A Dublin Diocesan Cleric in Buenos Aires | Walsh, Edward | Article in Journal | | 2023 |
| A failed revolution? the Irish Confederate war in its european context | Ohlmeyer, Jane H. | Article in Journal | | 1995 |
| A false American imprint on a Catholic apologetic work of 1816 linked to a provincial Irish printer | O'Keefe, Doris N. | Article in Journal | | 1999 |
| A famous bishop from the banks of the Bandon | Carroll, Finbarr | Article in Journal | | 1993 |
| A fearful people : religion and the Ulster conflict | Wells, Ronald A. | Article in Journal | | 1993 |
| A foe to tyranny : Rev. Edmund Mulcahy, P.P.U.F. | Muleahy, John | Article in Journal | | 2000 |
| A forgotten Irish theologian | Gwynn, Aubrey | Article in Journal | | 1974 |
| A forgotton Sligo-born patriot | McTernan, John C. | Article in Journal | | 2017 |
| A fourteenth-century scholar and primate : Richard FitzRalph in Oxford, Avignon and Armagh | Walsh, Katherine | Monograph or Collective Volume | Clarendon Press | 1981 |
| A Franco-Irish solution? : Francois Mauriac, Kate O'Brien and the Catholic intellectual novel | Ryan, Angela | Article in Book | | 2004 |
| A friend of education | Faulkner, Pádraig | Article in Journal | | 1998 |
| A friend of Nano Nagle : Laurence Callanan, O.F.M. (1739-1818) | Fennessy, Ignatius | Article in Journal | | 2000 |
| A future for Irish studies, 1 | Foster, John Wilson | Article in Journal | | 1988 |
| A Galway man meets John Brown before he was 'Mouldering in the grave' | O'Loughlin, Thomas | Article in Book | | 2015 |
| A gifted scholar and saintly priest from Bagenalstown | Anonymous | Article in Journal | | 2000 |
| A glance at five Cistercian Abbeys of the South-East | de Vál, Seamus S. | Article in Journal | | 2008 |
| A glimpse of Navan and Donaghmore in Penal times | Mulvany, Vincent | Article in Journal | | 2011 |
| A grand game of hurling & football : sport & nationalism in old Toronto | Ryan, DennisWamsley, Kevin | Article in Journal | | 2004 |
| A Great Irish Archbishop : Daniel Mannix, Archbishop of Melbourne | Murphy, Frank | Article in Journal | | 1965 |
| A great Irish chaplain : Father John Gwynn, S.J. | Bithrey, John | Monograph or Collective Volume | The author | 1954 |
| A great Irish missionary : Bishop Joseph Shanahan | Leen, Edward | Article in Journal | | 1944 |
| A great Irish missionary : Dr Joseph Shanahan, C. S. Sp. (1870-1943) | Ronayne, T. | Article in Journal | | 1944 |
| A guide to eighteenth-century reports on Irish dioceses in the archives of Propaganda Fide | Fenning, Hugh | Article in Journal | | 1968 |
| A guide to the Irish Jesuit Province archives | Redmond, Stephen | Article in Journal | | 1996 |
| A hard auld station : musings on St. Colmcille's Church, Swords | Marks, Bernadette | Monograph or Collective Volume | Swords Historical Society | 2004 |
| A haven of popery : English Catholic migration to Ireland in the age of plantations | Edwards, David, 1963- | Article in Book | | 2005 |
| A heroine of the apostolate (1907-1944), Edel Quinn, envoy of the Legion of Mary to Africa | Suenens, Léon Joseph | Monograph or Collective Volume | [s.n.] | 1954 |
| A hidden church : the diocese of Achonry 1689-1818 | Swords, Liam | Monograph or Collective Volume | Columba | 1997 |
| A hidden Church? The structure of Catholic Dublin in the mid-eighteenth century | Burke, Nuala | Article in Journal | | 1974 |
| A history of Ballynaneashagh or St Otteran's Cemetery | Power, Dermot | Article in Journal | | 2014 |
| A history of Irish Catholicism | | Monograph or Collective Volume | Gill | 1968 |
| A history of Northern Ireland | Buckland, Patrick | Monograph or Collective Volume | Gill & Macmillan | 1981 |
| A history of Saint Denis parish | Barrett, Joseph | Article in Journal | | 1975 |
| A history of St Columba's College 1843-1974 | White, G. K. | Monograph or Collective Volume | Old Columban Society | 1980 |
| A history of St Mary's church, Gowran | Kehoe, Imelda | Monograph or Collective Volume | Gowran Development association | 1992 |
| A history of the Catholic church for schools | O'Doherty, J. F. | Monograph or Collective Volume | National Press | 1943 |
| A history of the Catholic Church for schools. Vol. 4 | Mahony, J. | Monograph or Collective Volume | Educational Company of Ireland | 1950 |
| A history of the Christian Brothers in Limerick, part 1 | Ahern, Richard | Article in Journal | | 1987 |
| A history of the Christian Brothers in Limerick, part 2 | Ahern, Richard | Article in Journal | | 1987 |
| A history of the diocese of Cork : from reformation to the penal era | Bolster, Evelyn | Monograph or Collective Volume | Tower Books | 1982 |
| A history of the diocese of Cork : the episcopate of William Delany : 1847-1886 | Bolster, Evelyn | Monograph or Collective Volume | Tower Books | 1993 |
| A history of the diocese of Cork from the penal era to the Famine | Bolster, Evelyn | Monograph or Collective Volume | Tower Books | 1989 |
| A history of the diocese of Raphoe | Maguire, Edward | Monograph or Collective Volume | [s.n.] | 1920 |
| A history of the foundation of the Congregation of the Sacred Hearts of Ireland | Clancy, Philip | Monograph or Collective Volume | Sacred Heart Community | 1991 |
| A history of the Irish Guild of Catholic Nurses : seventy five years of service 1922-1997 | Henry, Hanora M. | Monograph or Collective Volume | Irish Guild of Catholic Nurses | 1998 |
| A history of the medieval diocese of Cloyne | MacCotter, Paul | Monograph or Collective Volume | Columba | 2013 |
| A house divided | MacNerney, James P. | Article in Journal | | 2006 |
| A hundred years ago : a glance at the former position of English and Irish catholics. | Gasquet, Francis Aidan | Article in Book | | 1912 |
| A Jesuit mission in 17th century Munster : some references to activities of the society in Cork | O'Connell, W. D. | Article in Journal | | 1942 |
| A journalist bishop in New Zealand | De Vál, Seamus S. | Article in Journal | | 2006 |
| A journey ... a dream : the Drumshanbo nuns' story, 1864-2000 | Horan, Margaret V. | Monograph or Collective Volume | The author | 2000 |
| A journey to Ceylon | Aloysius of Mary, Brother | Article in Journal | | 1985 |
| A Journey to Lough Derg | Butler, Isaac | Article in Journal | | 1892 |
| A Killaloe priest in France : John Baptist Walsh, (1750-1825) | Anonymous | Article in Journal | | 1964 |
| A Kilruane priest in the U.S.A. : Rev. Patrick O’Meara | Whyte, Edward | Article in Journal | | 1996 |
| A late eighteenth-century Catholic chapel at Kilmurry, county Wicklow | Corlett, ChristiaanHicks, Therese | Article in Journal | | 2018 |
| A lawyer in politics : the career of Sir Richard Nagle c. 1636-1699 | McGuire, James | Article in Book | | 2003 |
| A letter from the Venerable Ignatius of St Paul Spencer, C.P., and the prayers of the Irish for the conversion of England | Cunningham, John M. | Article in Journal | | 2024 |
| A letter of Nicholas Slevin, 1817 | Ó Súilleabháin, Pádraig | Article in Journal | | 1968 |
| A life of Patrick Cardinal O'Donnell | Gallagher, John P. | Thesis | | 1975 |
| A link with the past - "House Stations" | Gavagan, Marian | Article in Journal | | 2005 |
| A list of 'Pontificalia' in Dunleer Parish register, 1776 | Murtagh, Michael | Article in Journal | | 2008 |
| A list of 17th-century Dublin diocesan priests | O'Riordan, W. M. | Article in Journal | | 1962 |
| A list of Catholic merchants in Cork in 1762 | Cussen, Robert | Article in Journal | | 1971 |
| A list of Dominicans in Ireland, 1657 | NA | Article in Journal | | 1983 |
| A list of Irish emigrants from Stamullen Catholic parish, Co. Meath | Wight, Judith Eccles | Article in Journal | | 1991 |
| A list of sources in Irish Religious Demography, c.1660-c.1861 | Gurrin, Brian F.Kennedy, LiamMiller, Kerby A. | Article in Journal | | 2023 |
| A list of the priests, secular and regular, of the diocese of Dublin in the year 1697 | O'Riordan, W. M. | Article in Journal | | 1955 |
| A list of those from county Wexford implicated in the 1641 rebellion | Whelan, Kevin | Article in Journal | | 1990 |
| A lodge of Irishmen at Lisbon, 1738 | Vatcher, S. | Article in Journal | | 1971 |
| A long journey : the Irish in Scotland | Aspinwall, Bernard | Article in Book | Leicester University Press | 1996 |
| A Loreto ray of hope | O'Donoghue, Máire | Article in Journal | | 2011 |
| A loyal Catholic sermon of 1798 | Gray, John | Article in Journal | | 1987 |
| A man for his season : bishop Neil Farren of Derry, 1939-1973 | Canning, B. J. (Bernard J.) | Article in Journal | | 1989 |
| A man for our time : a short life of Edmund Rice, 1762-1844 | Blake, Donal | Monograph or Collective Volume | Vertias | 1996 |
| A man of the Universal Church : Peter James Kenney, S.J., 1779-1841 | Morrissey, Thomas J. | Article in Journal | | 1999 |
| A man who 'did not seek the society of many': Bishop Edward McGennis (1846-1906) | Kelly, Liam | Article in Journal | | 2022 |
| A man with a mission | Graham, Tommy | Article in Journal | | 1993 |
| A Mass path | Allen, Gregory | Article in Journal | | 2003 |
| A medallion of John's Lane chapel in 1840 : whodunnit and why? | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1992 |
| A meeting minds? : Margaret Aylward and Paul Cullen | Close, Anne-Marie | Article in Book | | 2011 |
| A meeting of priests in Co. Derry, 1669 | Lynch, Anthony | Article in Journal | | 1991 |
| A memoir of Peter Begley OFM on observance in the Irish province (1928-34) | Fennessy, Ignatius, OFM | Article in Journal | | 2010 |
| A memorable day in Letterkenny | McClintock, May | Article in Journal | | 2008 |
| A message from heaven : the life and crimes of Father Seán Fortune | O'Connor, Alison | Monograph or Collective Volume | Brandon | 2000 |
| A modern apostle of Dublin : Father Peter Kenney, S. J. (1779-1841) | Savage, R. B. | Article in Journal | | 1941 |
| A monastic landscape : the Cistercians in medieval Leinster | Lynch, Bridget | Thesis | | 2008 |
| A monument ot Archbishop Thomas Walsh in the town of Cashel, Co. Tipperary | Fitzpatrick, Liz | Article in Journal | | 1994 |
| A more visible presence : Catholics in early twentieth-century Armagh | McVeigh, Mary | Article in Journal | | 2010 |
| A narrative of the case of Miles Crowly | Herlihy, Kevin | Article in Book | | 1996 |
| A nation of extremes : the pioneers in twentieth-century Ireland | Ferriter, Diarmaid | Monograph or Collective Volume | Irish Academic Press | 1999 |
| A nineteenth century house - and the men who lived therein (part 3) : Fr. Charles Flanagan P.P. V.G. (1863-68) | Hasson, Seamus | Article in Journal | | 1987 |
| A nineteenth century parochial house - and the men who lived therein (part 5) : Fr. Michael Tracy P.P., V.F. (1876-90) | Hasson, Seamus | Article in Journal | | 1990 |
| A nineteenth century parochial house - and the men who lived therein, part 2 | Hasson, Seamus | Article in Journal | | 1986 |
| A nineteenth century parochial house and the men who lived there : (parts 6 and 7) : Fr Edward Loughrey, PP, 1890-1915 | Hasson, Seamus | Article in Journal | | 1992 |
| A nineteenth century parochial house and the men who lived therein | Hasson, Seamus | Article in Journal | | 1985 |
| A nineteenth-century parochial house - and the men who lived therein. (Parts 8-9) Fr Edward Loughrey, P.P. (1890-1915) | Hasson, Seamus | Article in Journal | | 1994 |
| A ninteenth century parochial house - and the men who lived therein (part 4) : Fr. Daniel Mooney, P.P., V.F., (1868-76) | Hasson, Seamus | Article in Journal | | 1989 |
| A notable convert | O'Connor, R. F. | Article in Journal | | 1914 |
| A notable Devon knight : Sir William Courtenay, 1553-1630 | Roberts, John | Article in Journal | | 1956 |
| A note on Anthony O'Donnell, O.F.M., Bishop of Raphoe, 1750-55 | Conlan, Patrick, 1940- | Article in Journal | | 1997 |
| A note on Berkeley and his Catholic countrymen | Berman, David | Article in Journal | | 1978 |
| A note on Dopping's form of recantation | Hennig, John | Article in Journal | | 1965 |
| A note on James Archer, S. J., 1550? - 1620? | Bergin, Denis | Article in Journal | | 1968 |
| A note on the dairteach | Manning, Conleth | Article in Book | | 2015 |
| A page of Irish history : story of University College, Dublin, 1883-1909 | Fathers of the Society of Jesus | Monograph or Collective Volume | Talbot Press | 1930 |
| A painter of Living Art : Jack P. Hanlon, 1913-1968 | Coleman, John | Article in Journal | | 1988 |
| A pamphlet in French on the banishment of Catholic clergy from Ireland in 1653 | | Article in Journal | | 2012 |
| A papal 'Bull' from Ennis Friary | Ó Dálaigh, Brian | Article in Journal | | 2005 |
| A Papal Bulla at Rothe House Museum | O'Doherty, Sean | Article in Journal | | 1983 |
| A parish choir in times of reformation | Daly, Kieran | Article in Book | | 2018 |
| A past apart : studies in the history of Catholic Belfast 1850-1950 | Hepburn, Anthony C. | Monograph or Collective Volume | Ulster Historical Foundation | 1996 |
| A pastoral instruction in the Irish language from the Right Rev. Gerald Teahan, bishop of Kerry to his diocesans in 1794 | | Article in Journal | | 1939 |
| A pastoral letter to the catholic clergy of the united dioceses of Waterford and Lismore | Hussey, Thomas | Monograph or Collective Volume | | 1797 |
| A pastoral of Archbishop O'Reilly, 1788 | | Article in Journal | | 1961 |
| A pastoral vision : Canon Joseph Guinan and the clerical social project in Edwardian Ireland | Maume, Patrick | Article in Journal | | 2005 |
| A path to perfection : translations from French by Catholic women religious in nineteenth-century Ireland | Milan, Michèle | Article in Book | | 2016 |
| A patriot priest : the life of Father James Coigly, 1761-1798 | | Monograph or Collective Volume | Cork University Press | 1998 |
| A pen-portrait of the clergy serving in Loughrea from 1884-1919 | Kelly, Declan | Article in Book | | 2003 |
| A people's church. The diocese of Achonry, the first thousand years : from the sixth to the seventeenth century | Swords, Liam | Monograph or Collective Volume | Columba | 2013 |
| A personal experience of Christianity, 1912-1987 | Sweetman, Michael, SJ | Article in Journal | | 1986 |
| A picture of nativism : Maggie's New York | McGuire-Driver, Helen | Article in Journal | | 2002 |
| A Pilgrimage of Privilege - 6th July 2014, a walk through history on the Caslan Hills, Strokestown, Co. Roscommon | Gillooly (née Bowens), Mary | Article in Journal | | 2019 |
| A plurality of Irelands : regions, societies and mentalities | Smyth, W. J. (William John), 1944- | Article in Book | | 1997 |
| A politically inconvenient aspect of history : the unpublished official history of the Gaelic Athletic Association of 1934 | Keating, Anthony | Article in Journal | | 2017 |
| A portrait of the rector : Father John Conmee, S.J. | Murray, Patrick | Article in Journal | | 1968 |
| A postscript to 1798: five letters of Myles Prendergast O.S.A. | Keogh, Dáire | Article in Journal | | 2009 |
| A pre-Famine murder in county Limerick | Curtis, Noreen | Article in Journal | | 2010 |
| A previously unnoticed letter of Oliver Plunkett | NA | Article in Journal | | 1975 |
| A priest in politics : Rev. Thomas Tyrell, P. P., Tinryland, 1823-43 | Kavanagh, P. J. | Article in Journal | | 1976 |
| A priest on the run : William Tirry, OSA, 1608-1654 | O'Connor, John | Monograph or Collective Volume | Veritas | 1992 |
| A priest remembers | Sweeney, Owen | Article in Journal | | 1995 |
| A priest's will, Maynooth, Co. Kildare, 1604 | Mac Cuarta, Brian | Article in Journal | | 2013 |
| A prisoner for the poor, Margaret Aylward (1810-1889) : a memoir | Gibbons, Margaret | Monograph or Collective Volume | Irish Messenger Publications | 1967 |
| A profest papist : Bishop John Gordon | Taylor, T. F. | Monograph or Collective Volume | | 1958 |
| A profile of Bernard Burke (1789-1861) | McGuire, Shane | Article in Journal | | 1987 |
| A propaganda Fide letter-book concerning Ireland, 1672-4 | | Article in Journal | | 1955 |
| Á propos des mariages mixtes en Irlande | Laulo-Smith, Marie Alice | Article in Journal | | 1987 |
| A Protestant pioneer of Catholic emancipation | Rogers, Patrick | Article in Journal | | 1995 |
| A question of class? relations between bishops and lay leaders in Ireland and Newfoundland 1783-1807 | McNally, Vincent J. | Article in Journal | | 1998 |
| A Question of Rescue Work or Abduction : Eliza McDermot, Legal Opinion, and Anti-Convent Prejudice in Victorian England | Kollar, René | Article in Journal | | 2008 |
| A radical priest in Mayo, Fr. Patrick Lavelle : the rise and fall of an Irish nationalist, 1825-86 | Moran, Gerard | Monograph or Collective Volume | [s.n.] | 1994 |
| A Redemptorist missionary in Ireland, 1851-1854 : memoirs by Joseph Prost, CSsR | | Monograph or Collective Volume | Cork University Press | 1998 |
| A rediscovered letter of Sylvester O'Halloran to Dr de Salis | Lyons, Claire E. | Article in Journal | | 2007 |
| A remarkable nun - Sister Mary Columba Hasson | O'Flanagan, Nora Pat, Sr. | Article in Journal | | 1998 |
| A rich inheritance : Galway Dominican nuns, 1644-1994 | O'Neill, Rose | Monograph or Collective Volume | Dominican Sisters | 1994 |
| A road less travelled : tales of the Irish missionaries | | Monograph or Collective Volume | Open Air, an imprint of Four Courts Press | 2011 |
| A rooted horror : Thomas D'Arcy McGee and secret societies, 1845-68 | Wilson, David A. | Article in Journal | | 2005 |
| A Russian missionary in Ferns. Father Vladimir Petcherine, C.S.S.R., 1807-1885 | Jones, Frederick M. | Article in Journal | | 1995 |
| A saint for eighteenth-century Dublin? Father John Murphy | Barnard, T. C. (Toby Christopher) | Article in Book | | 2016 |
| A school for church music in Ireland : the evidence of Irish periodical literature | O'Donovan, Ite | Article in Book | | 2018 |
| A selection of sources dealing with the nativist riots of 1844 | Schmandt, Raymond H. | Article in Journal | | 1969 |
| A separate culture? : Irish Catholics in working-class Manchester and Salford, c1890-1939 | Fielding, Steven | Article in Book | | 1992 |
| A seventeenth-century Hiberno-Breton hagiological exchange | Dumville, David N. | Article in Book | | 1991 |
| A seventeenth-century manuscript report of the Amazon region | Hazard, Benjamin | Article in Book | | 2015 |
| A seventeenth-century pilgrim from county Kilkenny | Nugent, Louise | Article in Journal | | 2015 |
| A sexual life, a spiritual life : a painful journey to inner life | Buckley, Pat | Monograph or Collective Volume | Liffey Press | 2005 |
| A shared childhood : the story of the integrated schools in Northern Ireland | O'Connor, Fionnuala | Monograph or Collective Volume | Blackstaff Press | 2002 |
| A short ecclesiastical survey of Golden Kilfeacle to serve as a memory of the re-opening of the church of the Blessed Sacrament, Golden | Ní Chearra, Máire | Monograph or Collective Volume | The author | 1991 |
| A short history of 'Our Lady Star of the Sea' Church, Strangford | McConville, Michael | Article in Journal | | 1988 |
| A short history of a Catholic parish 600-1850 A.D. | Mulcahy, J. | Article in Journal | | 1989 |
| A short history of some Dublin parishes. Parts 15-17 | Donnelly, Nicholas | Monograph or Collective Volume | Carraig Books | 1983 |
| A short history of the attempts ... to convert the popish natives of Ireland to the Established Religion with a Proposal for their Conversion | Richardson, John | Monograph or Collective Volume | | 1712 |
| A short history of the Diocese of Elphin | Mooney, Canice | Article in Book | | 2000 |
| A short-title calendar of "Hibernia", vol. 3 (1877-88) in the General Archives of the Friars Minor, Rome : part 2, ff 401-809 | Conlan, Patrick, 1940- | Article in Journal | | 1983 |
| A short-title calendar of "Hibernia", vol. 4 (1889-93) in the General Archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1984 |
| A short-title calendar of 'Hibernia', vol. 3 (1877-88), in the General Archives of the Friars minor, Rome : part 1, ff 1-400 | Conlan, Patrick, 1940- | Article in Journal | | 1982 |
| A short-title calendar of 'Hibernia', vol.2 (1870-6) in the general archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1979 |
| A short-title calendar of Hibernia, 5 : 1894-9, and of Irish material in Saxonia S. Crucis, 3 : 1890-1900, in the General Archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1985 |
| A short-title calendar of Hibernia, vol. 6 (1888-1892), in the general archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1993 |
| A short-title calendar of the papers of Archbishop Daniel Murray : Irish College, Paris, Part 2 (1814-1852) | Sheehy, David C. | Article in Journal | | 2006 |
| A short-title calendar of the papers of Archbishop James Butler II in Archbishop's House, Thurles | Tierney, Mark | Article in Journal | | 1978 |
| A short-title calendar of the papers of Archbishop James Butler II in archbishop's house, Thurles, 1, 1764-86 | Tierney, Mark | Article in Journal | | 1978 |
| A short-title calendar of the papers of Archbishop James Butler II in Archbishop's House, Thurles, part 2, 1787-91 | Tierney, Mark | Article in Journal | | 1978 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles : Part 2, 1840-1845 | Tierney, Mark | Article in Journal | | 1990 |
| A short-title calendar of the papers of archbishop Michael Slattery in archbishop's house, Thurles : part 4, 1847 | Tierney, Mark | Article in Journal | | 1993 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles : Part 7, 1853-6 | Tierney, Mark | Article in Journal | | 2006 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles, 3 : 1846 | Tierney, M. | Article in Journal | | 1991 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles. Part. 5 : 1848, Part 6: 1849-1852 | Tierney, Mark | Article in Journal | | 1994 |
| A short-title calendar of the papers of Archbishop Thomas William Croke in Archbishop's House, Thurles : 2, 1886-1890 | Tierney, Mark | Article in Journal | | 1973 |
| A short-title calendar of the papers of Archbishop Thomas William Croke in Archbishop's House, Thurles : part 1, 1841-1885 | Tierney, Mark | Article in Journal | | 1971 |
| A short-title calendar of the papers of Archbishop Thomas William Croke in Archbishop's House, Thurles. Pt. 1, 1841-85; pt. 2, 1886-1890; pt. 3, 1891-1902 | | Article in Journal | | 1974 |
| A short-title calendar of the reception and profession books of the English Franciscans in Killarney 1860-1902 | Conlan, Patrick, 1940- | Article in Journal | | 2000 |
| A short-title calender of 'Hibernia', vol. 1 (1706-1869) in the general archives of the Friars Minor, Rome | Conlon, Patrick | Article in Journal | | 1978 |
| A short-title calender of the papers of Archbishop William Croke in Archbishop's House, Thurles, 2 : 1886-1890 | Tierney, Mark | Article in Journal | | 1974 |
| A short-title catalogue of the papers of Archbishop Michael Slattery in Archbishop's house, Thurles. Part 3, 1846 | Tierney, M. | Article in Journal | | 1991 |
| A Skerries bishop | Halpin, P. | Article in Journal | | 1998 |
| A Spanish Franciscan archbishop of Dublin : Fr Matthew of Oviedo, O. F. M. | Barrett, Fergus | Article in Journal | | 1941 |
| A spirited letter from 1856 | Doddy, Padraig | Article in Journal | | 2017 |
| A stormy decade in the Irish College, Paris, 1849-59 | Ó Fearghail, Feargus | Article in Book | | 1978 |
| A study of priests' wills in the Roman Catholic Diocese of Limerick (1878-1917) | Tobin, Matthew | Article in Journal | | 2003 |
| A study of religious statistics in Ireland | Gannon, Patrick Joseph | Article in Journal | | 1921 |
| A study of the composition of the episcopate and episcopal activities in the ecclesiastical province of Cashel, c.1400-1431 | Kelleher, Donal Anthony | Thesis | | 1988 |
| A study of the John Hughes-Terence Donaghoe friendship | Coogan, M. Jane | Article in Journal | | 1982 |
| A study of the relationship between the Catholic Church, nationalism and republicanism with particular reference to the Northern Ireland conflict since 1968 | Devine, Angela Yvonne | Thesis | | |
| A study of two New York Irish-American newspapers in the early nineteenth century | McShane, Kieran | Article in Journal | | 1993 |
| A supplement to the report on the state of popery in Ireland in 1731 : an anti-fraternal bias | Fennessy, Ignatius | Article in Journal | | 2000 |
| A survey of research and writing about Roman Catholic women's congregations in Great Britain and Ireland | O'Brien, Susan | Article in Book | | 2004 |
| A tale from a biscuit tin | Meehan, Michael J. | Article in Journal | | 2017 |
| A tale of two abbots | Lincoln, Siobhán | Article in Journal | | 1986 |
| A tale of two Dalgans | Canavan, Louise | Article in Book | | 2015 |
| A tale of two schools : educating Catholic female deaf children in Ireland, 1846–1946 | O'Connell, Noel Patrick | Article in Journal | | 2016 |
| A textual history of the Spiritual Rose | McKenna, Malachy | Article in Journal | | 1991 |
| A theatre of the unword : censorship, hegemony
and Samuel Beckett | Johnson, Nicholas | Article in Book | | 2014 |
| A theology thesis defended by an Irish clerical student in Paris in 1739 | | Article in Journal | | 1997 |
| A time for sowing : the St. John of God brothers in Ireland : a centenary record 1879-1979 | Purcell, Mary | Monograph or Collective Volume | Brothers of St. John of God | 1979 |
| A time of change and consolidation - Ferns in the nineteenth century | Morris, Fintan | Article in Book | | 1999 |
| A town called Saint Patrick | MacNerney, James P. | Article in Journal | | 2006 |
| A tribute to the memory of Sr. M. Joseph Ruby | Kelly, Mary | Article in Journal | | 2000 |
| A true historical relation of the conversion of Sir Tobie Matthew | Ó Maidín, Pádraig | Article in Journal | | 1965 |
| A turbulent year: Lord Anglesey’s first viceroyalty and the politics of Catholic emancipation, 1828 | Holton, Karina | Article in Journal | | 2017 |
| A typical anomaly? the success of the Irish counter-reformation | Ó hAnnracháin, Tadhg | Article in Book | | 2003 |
| A Ventry convert group, 1842 | De Brún, Pádraig | Article in Journal | | 1980 |
| A Victorian atheist encounters Roman-Catholic Ireland | Armstein, Walter L. | Article in Book | | 2005 |
| A virtuous alliance : muscular and musical Christianity in late nineteenth-century Limerick | Hayes, Tom | Article in Book | | 2009 |
| A vision of hell in early modern Ireland | O'Hara, Tana | Article in Journal | | 1997 |
| A vision of Ireland, 1967 : John Montague’s aisling ghéar | Herron, Tom | Article in Journal | | 2019 |
| A voice from the Jacobite underground : Liam Inglis (1709-1778) | Ó Ciardha, Éamonn | Article in Book | | 1998 |
| A voyage into Catholicism : Irish travel to Italy in the nineteenth century | O'Connor, Anne | Article in Journal | | 2016 |
| A voyage to Australia | Casey, GerardDunne, Michael | Article in Journal | | 2001 |
| A weary task : the struggle in retrospect | Anonymous | Article in Book | | 1954 |
| A widening horizon : Catholic sisterhoods on the Northern plains, 1874-1910 | Peterson, Susan | Article in Journal | | 1985 |
| A wounded church : religion, politics and justice in Ireland | McVeigh, Joe | Monograph or Collective Volume | Mercier Press | 1989 |
| A ‘Primitive Germ of Discord’
in the North Atlantic World: Newfoundland-Irish
Roman Catholics in Scottish Cape Breton | Ludlow, Peter | Article in Journal | | 2009 |
| A ‘sentinel(s) of our liberties’ : Archbishop John Hughes and
Irish-American intellectual negotiation in the Civil War era | Kelly, Mary C. | Article in Journal | | 2010 |
| A ‘sentinel(s) of our liberties’ : archbishop John Hughes and Irish-American intellectual negotiation in the Civil War era | Kelly, Mary C. | Article in Journal | | 2010 |
| Ab Waterfordia ad Urbem : clerical networks between Waterford and Rome during the early modern period | Binasco, Matteo | Article in Book | | 2026 |
| Ábhair sagart agus an t-Eirí amach | de Vál, Seamus S. | Article in Journal | | 1998 |
| Abraham Brownrigg. Carlovian and eminent churchman | Murphy, Rory | Article in Journal | | 1996 |
| Abram Ryan, priest and poet | Nevin, May | Article in Journal | | 1940 |
| Accommodation and resistance : a comparison of cultural identities in Ireland and Wales, c.1880-1914 | O'Leary, Paul | Article in Book | | 1998 |
| Accommodations with the Protestant state and church : a comparative study of respective Dutch and Irish Catholic experiences | Downey, Declan M. | Article in Book | | 2011 |
| Accusations of Oliver Plunkett | Mooney, Canice | Article in Journal | | 1956 |
| Achill : the famine and religious conflict | O'Shea, John | Article in Journal | | 1996 |
| Achonry and its churches: from the sixth century to the third millenium | Swords, Liam | Monograph or Collective Volume | Éditions du signe | 2007 |
| Across "The Big Wather" : the Irish-Catholic community of mid-nineteenth century Pittsburgh | Walsh, Victor A. | Article in Journal | | 1982 |
| Acta capitulorum Provinciae Hiberniae Sacri Ordinis Praedicatorum, 1669-1688 | | Monograph or Collective Volume | Dominican | 1989 |
| Acta Sacrae Congregationis de Propaganda Fide, 1622-50 | | Article in Journal | | 1959 |
| Action and reaction : Catholic lay organisations in Dublin in the 1920s and 1930s | Dunne, Eamonn | Article in Journal | | 1994 |
| Acts of "national communion" : the centenary celebrations for Catholic emancipation, the forerunner of the Eucharistic Congress | McIntosh, Gillian | Article in Book | | 1999 |
| Administrative documents relating to the pre-reformation church in the diocese of Meath, c.1518 | Scott, Brendan | Article in Journal | | 2008 |
| Adolescent architecture and after. The formative years of Timothy Hevey (1846-78) | O'Reilly, Seán | Article in Journal | | 1996 |
| Advocacy, the Enlightenment, and the Catholic print trade in Mathew Carey's Dublin | Wolf, Nicholas M. | Article in Journal | | 2014 |
| Aegidius Chaissy, O.F.M., and James Ussher, Protestant bishop of Armagh | Giblin, Cathaldus | Article in Journal | | 1956 |
| Aengus Finucane : in the heart of concern | Purcell, Deirdre | Monograph or Collective Volume | New Island | 2014 |
| After the wake - an alternative to Cullen's church | Coll, Niall | Article in Journal | | 1999 |
| Afterlives : testimonies of Irish Catholic mothers on infant death and the fate of the unbaptized | Kennedy, Liam | Article in Journal | | 2021 |
| Afterword : the plain people of God | Mac Réamoinn, Seán | Article in Book | | 1986 |
| Ag smaoineamh ar an gCairdinéal | Ó Dufaigh, Seosamh | Article in Journal | | 1992 |
| Age, region and marriage in post-famine Ireland : an empirical examination | McKenna, E. E. | Article in Journal | | 1978 |
| Agents of altruism : the Great Irish Famine and Italian civil society (1847) | Zavatti, Francesco | Article in Journal | | 2021 |
| Agostiniani e Scotisti : il contributo irlandese alla teologia della Controroforma nell'Europa continentale | Downey, Declan M. | Article in Book | | 2001 |
| Ahamlish Parish, Co. Sligo, 1800-1880: a time of much change | McKeon, John | Article in Journal | | 2021 |
| Alas, poor Mogue! The journey, 1798-1953. 1798 revisited | Kavanagh, Myles | Article in Journal | | 2018 |
| Alasdair MacDonnell | Kennedy, David | Article in Journal | | 1947 |
| Alessandro Cellini (1830-88) and Catholic church music in Dublin : a preliminary assessment | Lawrence, Frank | Article in Book | | 2018 |
| Alexander Prince Hohenlohe and his miraculous cures in early nineteenth-century Europe and America | Cronin, Elizabeth | Article in Journal | | 2014 |
| Alfred O'Rahilly, 3 : Controversialist. Part 2 : Catholic apologist | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1993 |
| Alfred O'Rahilly. Vol. 1 : academic | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1986 |
| Alfred O'Rahilly: creative revolutionary | Gaughan, J. Anthony, 1932- | Article in Journal | | 2016 |
| Alice O'Sullivan, Clonmel missionary and martyr (1836-1870) | Chadwick, Áine Máire | Article in Journal | | 2001 |
| All Hallows College and Stillorgan | Sobolewski, Peter | Article in Journal | | 2018 |
| All Saints, Drimoleague, and Catholic visual culture under Bishop Cornelius Lucey in Cork, 1952-9 | Butler, Richard J. | Article in Journal | | 2015 |
| All the bishops' men | Mooney, Tom | Monograph or Collective Volume | Collins Press | 2011 |
| All the king's men : the impact of the crown's Irish soldiers on the English civil war | Malcolm, Joyce Lee | Article in Journal | | 1979 |
| All were together, seemingly conspiring | Matthiesen, Leroy T. | Article in Journal | | 2005 |
| Allies or antagonists? : Irish Catholicism and Irish republicanism during the 1980s | O'Hagan, Dara | Thesis | | 1998 |
| Altar boy : a story of life after abuse | Madden, Andrew | Monograph or Collective Volume | Penguin | 2003 |
| Alternative allegiances in early modern Ireland | Clarke, Aidan | Article in Journal | | 1992 |
| Alternative establishments? Insular Catholicism and Presbyterianism | Armstrong, RobertÓ hAnnracháin, Tadhg | Article in Book | | 2013 |
| Altinure Church | Donnelly, Philip | Article in Journal | | 2002 |
| Ambassador extraordinaire : Daniel O'Daly 1595-1662 | Mac Curtain, Margaret | Monograph or Collective Volume | Arlen House | 2017 |
| Ambiguity in nationalism - the case of Ireland | MacDonagh, Oliver | Article in Journal | | 1981 |
| Ambiguous alliances : early modern Ireland | Bradshaw, Brendan | Article in Journal | | 2005 |
| Ambivalence towards the Saxon shilling : the attitudes of the Catholic church in Ireland towards enlistment during the first world war | Callan, Patrick | Article in Journal | | 1986 |
| America Methodism's 'Christian Advocate' and Irish Catholic immigration, 1830-1870 | Van Dussen, D. Gregory | Article in Journal | | 1991 |
| American Catholic lay groups and transatlantic social reform in the progressive era | Moloney, Deirdre | Monograph or Collective Volume | University of North Carolina Press | 2002 |
| American Catholic women : a historical exploration | | Monograph or Collective Volume | Macmillan | 1989 |
| American Catholicism and the Irish from colonial times to 1870 | Rafferty, Oliver P. | Article in Book | | 2024 |
| American Catholics and the Irish land league, 1879-1882 | Green, J. J. | Article in Journal | | 1949 |
| American Civil War chaplain | O'Hara, Aidan | Article in Journal | | 2006 |
| American methodism's "Christian Advocate" and Irish catholic immigration, 1830-1870 | VanDussen, D. Gregory | Article in Journal | | 1991 |
| Amiens, Brisbane and Crimea : Paul Cullen and the Mercy Mission that led to the establishment of the Mater Hospital in Dublin | Ó hÓgartaigh, Margaret | Article in Book | | 2011 |
| Among the Ethiopian Orthodox : ecumenical challenges in a new missionary era | Cogavin, Brendan | Article in Book | | 2015 |
| Among the Irish martyrs : Dominic Collins, S.J., in his times (1566-1602) | Morrissey, Thomas J. | Article in Journal | | 1992 |
| An 18th century episcopal instruction for Ossory | Costello, Con | Article in Journal | | 1983 |
| An account of the Poor Clare Order in eighteenth-century Dublin | | Article in Journal | | 2012 |
| An admonition to the nobility and people of England and Ireland, concerning the present warres ... | Allen, William, cardinal, 1532-1594 | Monograph or Collective Volume | | 1588 |
| An alphabetical list of Dromore clergy mentioned in Roman documents of the eighteenth century | Kearns, Patrick | Article in Journal | | 1990 |
| An alternative establishment : the evolution of the Irish Catholic hierarchy, 1600-49 | Ó hAnnracháin, Tadhg | Article in Book | | 2013 |
| An amazing discovery | Doyle, Eamon | Article in Journal | | 2023 |
| An apostle of Catholic Dublin : Father Henry Young | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Browne and Nolan | 1944 |
| An apostle of nationality : Fr Eoghan O'Growney | Anonymous | Article in Journal | | 1945 |
| An appreciation. Very Rev. Tobias R. Furlong, P.P., R.I.P. | K., J. L. | Article in Journal | | 1976 |
| An appropriate time | Byrne, Dermot | Article in Journal | | 1997 |
| An archaeology of remembering and forgetting: 'good' and 'bad' deaths on Irish mariners' memorials | Mytum, Harold | Article in Journal | | 2016 |
| An Armagh Penal Cross of 1730 | Ó Fearghail, Fearghus | Article in Journal | | 2010 |
| An Augustinian Provincial Chapter at Fatherd, 1649 | Fenning, Hugh | Article in Journal | | 2006 |
| An Beirnach: Milltown priest and Gaelic scholar | Carney, Noel | Article in Journal | | 2015 |
| An Br A.S. Ó Maoil Eoin, 1901-'68 : ‘Ar son Dé agus onóir na hÉireann' | Caomhánach, A. P. | Article in Book | | 1996 |
| An Br Iaróm Mac Giolla Phádraig, 1877-1910 : múinteoir ó nádúr | Mac Giolla Phádraig, S. D. | Article in Book | | 1996 |
| An Cairdinéal Tomás Ó Fiaich agus comhthéacs an chreidimh in Éirinn | Ó Maolfabhail, Donncha | Article in Journal | | 1992 |
| An Canónach Pádraig Ó Laoghaire (1853-1932) ó Chill Briotáin | Breathnach, DiarmuidNí Mhurchú, Máire | Article in Journal | | 1995 |
| An Canónach Séamus Goodman | Ó Fiannachta, Pádraig | Monograph or Collective Volume | Oidhreacht Chorca Dhuinhne | 1990 |
| An Canónach Uilleog De Búrca, 1829-1887 | Ó Maolmhuaidh, Proinsias | Article in Book | | 1997 |
| An chléir Chaitleacach, an léann dúchais agus an cultúr in Éirinn, c. 1750-c. 1850 | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 1986 |
| An Choróin Mhuire im iar-thuaisceart Thir Chonaill sa bhfichuí haois : suíomh do dheabhoid Mheánooiseach Euorpach, i geráifeacht agus saol traidisiúntu na ndaoine | Lysaght, Patricia | Article in Journal | | 1995 |
| An Dochtúir Ó Duinnshléibhe agus an Mhidheamhain | Ó Ceallaigh, Brian | Article in Journal | | 1946 |
| An Dr de Siún, Easpag Luimneach (1796-1813), agus and Ghaeilge | Ó Súilleabháin, Pádraig | Article in Journal | | 1966 |
| An early Catholic church at St Mullins, Co. Carlow | Manning, Conleth | Article in Journal | | 1999 |
| An East Clare priest : Fr. John Burke 1805-1881 | Burke, Brendan | Article in Journal | | 2005 |
| An efficacious Irish triumvirate : Paul Cullen, Tobias Kirby and Joseph Dixon | McKinney, Amy | Article in Book | | 2008 |
| An eighteenth-century bishop : John Carroll of Baltimore | Hennessy, J. | Article in Journal | | 1978 |
| An eighteenth-century minister and piper | Donnelly, Seán | Article in Journal | | 2000 |
| An eighteenth-century version of diasporic Irish identity | Byrne, Thomas | Article in Book | | 2005 |
| An eminent Franciscan of the emancipation era | Egan, Bartholomew, OFM | Article in Journal | | 1971 |
| An essay ... on ecclesiastical finance, as regards the Roman Catholic church in Ireland | Croly, D. O. | Monograph or Collective Volume | | 1834 |
| An extract from Bishop David Moriarty's diary, 1856 | O'Shea, Kieran | Article in Journal | | 1984 |
| An eye witness to history : Fr Alexander T. McCabe and the Spanish Civil War, 1936-1939 | Keogh, Dermot | Article in Journal | | 1994 |
| An Ghaeilge i Maigh Nuad | Ó hÉanacháin, Seán | Monograph or Collective Volume | Cló Iar-Chonnacht | 2016 |
| An hAthair William Baithe, C.I., 1564-1614 : ceannródaí sa teangeolaíocht | Ó Mathúna, Seán | Monograph or Collective Volume | Oifig an tSoláthair | 1980 |
| An historical and critical review of the civil wars in Ireland ... | [Curry, John] | Monograph or Collective Volume | | 1775 |
| An historical footnote to Cardinal O'Connell's Recollections | Christie, Francis | Article in Journal | | 1935 |
| An hourglass on the run : the story of a preacher | Feehan, James A. | Monograph or Collective Volume | Mercier Press | 2000 |
| An icon of sacrifice: 'The Last General Absolution of the Munsters' - the picture and its people | Hayes, John | Article in Journal | | 2015 |
| An immigrant bishop : John England's adaptation of Irish Catholicism to American Republicanism | Carey, Patrick W. | Monograph or Collective Volume | Catholic University of America Press | 2022 |
| An imperial harbinger: Sylvester O'Halloran's 'General History' (1778) | Lyons, Clare E. | Article in Journal | | 2015 |
| An Inquiry into certain vulgar opinions concerning the Catholic Inhabitants and the Antiquities of Ireland, in a series of letters, etc. | Milner, John, Bishop of Castabala | Monograph or Collective Volume | NA | 1808 |
| An inside view of the identity struggles of a member of a religious order in a changing culture from the late 1960's to the post Ryan report era in 21st century Ireland | McEvoy, Carmel | Thesis | | |
| An interrogation carried out in Cork in 1600 by the Ecclesiastical High Commission for Recusancy : a document from Laud ms. 612, Bodleian Library Oxford | Sheehan, A. J. (Anthony J.) | Article in Journal | | 1984 |
| An introduction to archives of Roman Catholic congregations of women religious in Ireland, with particular reference to genealogical research | Cosgrave, Marianne | Article in Journal | | 1997 |
| An introduction to sources on Nano Nagle | O'Farrell, Pius | Article in Journal | | 2005 |
| An introduction to the Central Catholic Library | MacGowan, Kenneth | Article in Journal | | 2004 |
| An introduction to the parish mission movement 1850-80 and its impact on the diocese of Kilmore | McGoohan, Ultan
| Article in Journal | | 2017 |
| An invitation to Australia : some documents of 1897-1898 | | Article in Journal | | 1976 |
| An Irish agent of the Counter-Reformation : Dominic O'Daly | Mac Curtain, Margaret | Article in Book | | 2019 |
| An Irish agent of the counter-reformation, Dominic O'Daly | Mac Curtain, Benvenuta | Article in Journal | | 1967 |
| An Irish bishop in penal times : the chequered career of Sylvester Lloyd, OFM, 1680-1747 | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Four Courts | 1993 |
| An Irish Bollandus : Fr. Hugh Ward and the Louvain hagiographical enterprise | Breatnach, Pádraig A. | Article in Journal | | 1999 |
| An Irish Catholic Association pilgrimage to Luján, Province of Buenos Aires [c.1918] | Walsh, Edward | Article in Journal | | 2000 |
| An Irish chaplain with the army of Rochambeau | Walsh, Micheline Kerney | Article in Journal | | 1982 |
| An Irish convict priest | Egan, MichaelWhelan, Kevin | Article in Journal | | 1988 |
| An Irish counter-reformation bishop : John Roche | Corish, Patrick J. | Article in Journal | | 1959 |
| An Irish Dimension to a British Kulturkampf | Barr, Colin | Article in Journal | | 2005 |
| An Irish Franciscan missionary in South Africa | Egan, Bartholomew, OFM | Article in Journal | | 1975 |
| An Irish genealogical source : a guide to church records | | Monograph or Collective Volume | Ulster Historical Foundation | 1994 |
| An Irish grave on Monte Cassino : Father Benjamin Joseph Braughall, pilgrim priest of Kildare (1776-1847) | Concannon, Helena | Article in Journal | | 1947 |
| An Irish Jansenist in seventeenth-century France : John Callaghan 1605-54 | O'Connor, Thomas | Monograph or Collective Volume | National University of Ireland | 2005 |
| An Irish manuscript in western Australia : John Howard's prayer book | Brennan, Mary M. | Article in Book | | 2015 |
| An Irish missionary in Pretoria | McCormack, Barbara | Article in Book | | 2015 |
| An Irish papal zouave in 1870 | Teeling, Bartholomew | Article in Journal | | 1958 |
| An Irish party and the British Parliament : Conor Cruise O'Brien's Parnell and his party | Philip Bull | Article in Journal | | 2021 |
| An Irish Rose in Texas | Lynch, Muireann | Article in Journal | | 1993 |
| An Irish scholar abroad : bishop John O'Brien of Cloyne and the Macpherson controversy | Ó Catháin, Diarmaid | Article in Book | | 1993 |
| An Irish solution to an Irish problem : Catholicism, contraception and change, 1922–1979 | Girvin, Brian | Article in Journal | | 2018 |
| An Irish theologian in enlightenment France : Luke Joseph Hooke, 1714-96 | O'Connor, Thomas | Monograph or Collective Volume | Columba | 1995 |
| An Irish tragedy : how sex abuse by Irish priests helped cripple the Catholic Church | Rigert, Joe | Monograph or Collective Volume | Crossland Press | 2008 |
| An Irish-American journalist and Catholicism : Patrick Ford of the Irish World | Rodechko, James P. | Article in Journal | | 1970 |
| An Irish-speaking island : state, religion, community, and the linguistic landscape of Ireland, 1770-1870 | Wolf, Nicholas M. | Monograph or Collective Volume | University of Wisconsin Press | 2014 |
| An Irishman at world's end : the voyage of St Brendan on the Hereford map | Scully, Diarmuid | Article in Book | | 2015 |
| An Irishman before the Mexican inquisition, 1574-5 | Hair, Paul Edward Hedley | Article in Journal | | 1971 |
| An Irishman in Portugal | Caball, John | Article in Journal | | 1955 |
| An léann eaglasta san eaglais Chaitliceach | Ó Corcora, Seán | Article in Book | | 1988 |
| An O'Daly | Caball, John | Article in Journal | | 1946 |
| An open door : a history of the society of St Vincent de Paul, Galway, 1849-1999 | | Monograph or Collective Volume | Vincent de Paul Society | 1999 |
| An open door : the history of the society of St. Vincent de Paul in Limerick, 1846-1996 | Ryan, Bob | Monograph or Collective Volume | Society of St. Vincent de Paul | 1996 |
| An Ossory instruction of 1773 | Ó Ferghail, Fearghus | Article in Journal | | 1994 |
| An Ossory instruction of 1773 | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
| Article in Journal | | 1994 |
| An réalt : a aidhmeanna agus a thionchar | De Vál, Seamas S. | Monograph or Collective Volume | An Sagart | 2010 |
| An sagart agus an file in gcomtheacs a aimsire | Canny, Nicholas P. | Article in Book | | 1986 |
| An t-Athair Eoghan Ó Caoimh, priest poet of Doneraile | Shine, Michael | Article in Journal | | 1999 |
| An t-Athair Micheál Breathnach | Ó Murchadha, Tadhg | Article in Journal | | 1944 |
| An t-Athair Peadar : Father O'Leary | Michael,OFM | Article in Journal | | 1939 |
| An t-Athair Pól Breathnach | Ua Brádaigh, Tomás | Article in Journal | | 1966 |
| An t-Athair Tadhg Ó Murchú (1908-1971) | Breathnach, DiarmuidNí Mhurchú, Máire | Article in Journal | | 1999 |
| An t-Athair Tomás Ó Ceallaigh : priest, scholar and patriot | Tivnan, Frank | Article in Journal | | 1994 |
| An t-Athair Tomás Ó Ceallaigh agus a shaothar, maille le réamhrádh nótaí agus eile | Ó Láimhin, Tomás S. | Monograph or Collective Volume | Complacht Foillsighthe an Iarthair | 1943 |
| An tArdeaspag Mac hÉil agus an Cairdinéal Ó Cuilinn | Ó Báin, Liam | Article in Book | | 1983 |
| An tArdeaspag Micheál Ó Síothcháin | Breatnach, Úna | Article in Journal | | 1997 |
| An tAthair Brasbie | De Brún, Pádraig | Article in Journal | | 1969 |
| An tAthair Cathaoir O Braonain | O hUrmoltaigh, Seán | Article in Journal | | 1989 |
| An tAthair Éamann Conchúr Mac an Bháird (1889-1917) | Mac Labhraí, Seán | Article in Journal | | 2017 |
| An tAthair Eoghan Ó Gramhnaigh | Ní Chonmhidhe, Mairéad | Article in Journal | | 1963 |
| An tAthair Eoghan Ó Gramhnaigh : fear nó finscéal | Ó Dúshláine, Tadhg | Article in Journal | | 1994 |
| An tAthair Liam Ó Fearghusa, 1881-1971 | Mac Ginnea, Seán | Article in Journal | | 1980 |
| An tAthair Lorcán Ó Muireadhaigh agus an Cúigeachas | Mac Giolla Chomhaill, Anraí | Article in Journal | | 1984 |
| An tAthair Mánus Mac Suibhne, sagart Ó Mhaigh Eo in Éirí amach 1798 | Mulloy, SheilaÓ Móráin, Pádraig | Monograph or Collective Volume | Westport Historical Society | 1999 |
| An tAthair Micheál Ó hIcí, agus Maigh Nuad | Ó Fiannachta, Pádraig | Article in Book | | 1986 |
| An tAthair Micheál P. Ó hIcí | De Róiste, Máire | Article in Book | | 1986 |
| An tAthair Seán Ó Murchú | Ó Dubhghaill, Séamus | Article in Journal | | 2003 |
| An tAthair Tadhg | Tyers, Pádraig | Monograph or Collective Volume | An Sagart | 2000 |
| An tEasbog Tomás Mhac Comhain (1831-1847) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1946 |
| An tSnaím is deireannaí mhaireas ón sean-aimsir idir Éire agus and Frainc, an amlaidh a scaoilfear í? | De Brún, Pádraig | Article in Journal | | 1954 |
| An underground gentry? Catholic middlemen in eighteenth-century Ireland | Whelan, Kevin | Article in Journal | | 1995 |
| An underground gentry? Catholic middlemen in eighteenth-century Ireland | Whelan, Kevin | Article in Book | | 1998 |
| An undertaking worthy only of fanatics: Catholic opinion on temperance and prohibition in New Zealand, c.1870-1910 | Ryan, Greg | Article in Journal | | 2010 |
| An unfortunate man : James Coigly, 1761-98 | Keogh, Dáire | Article in Journal | | 1998 |
| An unholy dispute. The controversy surrounding the appointment of Oliver Kelly to the See of Tuam 1809-1814 | Waldron, Liam | Article in Journal | | 2005 |
| An unnoticed pamphlet by Charles O'Conor at Belanagare : A vindication of the political principles of Roman Catholics (1761) | Woods, C. J. (Christopher John) | Article in Journal | | 1992 |
| An unpublished eighteenth century Franco-Irish manuscript | Hayes, Richard Francis | Article in Journal | | 1939 |
| An unpublished letter of St Oliver Plunkett | | Article in Journal | | 1975 |
| An untraced Irish work on catechetics | Millett, Benignus | Article in Journal | | 1991 |
| An unusual church register occurrence | Murphy, Michael | Article in Journal | | 2012 |
| An urban community and the Penal Laws : Limerick 1690-1830 | O'Flaherty, Eamon | Article in Book | | 2011 |
| Anacarty/Donohill history | Anonymous | Monograph or Collective Volume | Anacarty/Donohill Cultural and Historical Society | 1997 |
| Analecta sacra, nova, et mira - De rebus catholicorum in Hibernia ... gestis | [Roth, David, R.C. Bishop of Ossory] | Monograph or Collective Volume | | 1616 |
| Anatomy of a gifted Belfast surgeon Sir Peter Reilly O'Connell 1860-1927 | Magee, Jack | Article in Journal | | 2005 |
| Ancestral voices : religion and nationalism in Ireland | O'Brien, Conor Cruise, 1917-2008 | Monograph or Collective Volume | Poolbeg | 1994 |
| And the stone was made flesh - a bicentenary meditation in Maynooth | McDonagh, Enda | Article in Journal | | 1995 |
| Andreas Steinhuber's 'Votum' for the Holy Office, Rome, concerning the Irish Boycotting and the Plan of Campaign (with translation) | Belletti, Alberto | Article in Journal | | 2021 |
| Andrew Campbell, bishop of Kilmore, 1753-1769 | Campbell, P. J. | Article in Journal | | 1977 |
| Andrew Campbell, bishop of Kilmore, 1753-1769 : student days in Spain | Walsh, Micheline | Article in Journal | | 1977 |
| Anglo-Irish relations and Northern Ireland : historical perspectives | Foster, R. F. (Robert Fitzroy) (Roy), 1949- | Article in Book | | 1993 |
| Ann Morrison - from Downpatrick to Australia | Lennon, Gerard | Article in Journal | | 1991 |
| Another Irish nation : some historiographical variations as found in late nineteenth-century and early twentieth-century schools | Fischer, Karin | Article in Journal | | 2004 |
| Another look at Lord John Russell and the papal aggression, 1850 | Paz, D. G. | Article in Journal | | 1982 |
| Anthony Blake, archbishop of Armagh, 1758-87 | Whelan, Patrick | Article in Journal | | 1970 |
| Anthony Bruodins Propugnaculum Catholicae Veritatis : Ein Beispiel für den Umgang mit nationaler und kultureller Identität im 17. Jahrhundert | Ross, Bianca | Article in Book | | 1993 |
| Anthony Butler : soldier-bishop | Blackall, Henry, Sir | Article in Journal | | 1969 |
| Anthony Fahy of Loughrea : Irish missionary in Argentina | Fahy, Michael | Article in Journal | | 2005 |
| Anthony Gernon, O.F.M. (c.1610-1680) and the Irish remonstrance | Faulkner, Anselm | Article in Journal | | 1971 |
| Anthony M. Keiley (1932-1965), Virginia's Catholic population | O'Grady, Joseph P. | Article in Journal | | 1969 |
| Anthony Mageoghegan, bishop of Clonmacnois | Walsh, Paul, Revd, 1885-1941 | Article in Journal | | 1940 |
| Anti-Catholicism and Irish disturbances : public order in mid-Victorian Wolverhampton | Swift, R. | Article in Journal | | 1984 |
| Anti-communism in mid-twentieth century Ireland | Delaney, Enda | Article in Journal | | 2011 |
| Anti-Irish intrigues at the Vatican | Woods, C. J. (Christopher John) | Article in Journal | | 1969 |
| Anti-Irish nativism in the mid-nineteenth century | Hirota, Hidetaka | Article in Book | NA | 2024 |
| Anti-tithe meeting at the "Great Heath" 1838 | Hyland, Jackie | Article in Journal | | 2004 |
| Antiquarian library catalogued | Dunlop, Eull | Article in Journal | | 1993 |
| Antiquarianism and architecture in eighteenth-century Ireland | Gill, LindaStokstad, Marilyn | Article in Book | NA | 1976 |
| Aodh Mac Aingil agus an scoil nua-Ghaedhilge i Lobháin | Ó Cléirigh, Tomás | Monograph or Collective Volume | Foillseacháin Rialtais | 1936 |
| Aodh Mac Aingil. Downpatrick's most illustrious son? | Napier, James | Article in Journal | | 1999 |
| Apocalyptic Ireland : 1580-1641 | Ford, Alan | Article in Journal | | 2013 |
| Apologetics of Harmony : Mathew Carey and the Rhetoric of Religious Liberty | Abruzzo, Margaret | Article in Journal | | 2010 |
| Apostolic letter of Pope Benedict XV to Cardinal Logue | Benedict XV, Pope | Article in Journal | | 1942 |
| Archbishop Butler's visitation book | | Article in Journal | | 1976 |
| Archbishop Carpenter and the Catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| Archbishop Carpenter's epistolae 1770-80 | | Article in Journal | | 1956 |
| Archbishop Corrigan and the coming of the Carmelites to New York | Isacsson, Alfred | Article in Journal | | 1988 |
| Archbishop Crolly and the development of Catholicism in Ulster 1812-49 | Macaulay, Ambrose | Monograph or Collective Volume | St Mary's College | 1990 |
| Archbishop Crolly and the development of Catholicism in Ulster, 1812-49 | Macaulay, Ambrose | Article in Journal | | 1993 |
| Archbishop Daniel Mannix | Griffin, James | Article in Journal | | 1990 |
| Archbishop Daniel Mannix of Melbourne, 1864-1963 | Kiernan, Colm | Article in Journal | | 1984 |
| Archbishop Edmund O'Reilly's report on the state of the church in Ireland, 1662 | Millett, Benignus | Article in Journal | | 1959 |
| Archbishop Fleming, patriot and scholar | Barrett, Fergus | Article in Journal | | 1941 |
| Archbishop Healy | McGreevy, Sean | Article in Journal | | 1946 |
| Archbishop Hugh MacMahon | Flynn, L. J. | Article in Journal | | 1973 |
| Archbishop Hughes and the question of Ireland, 1829-1862 | Connor, Charles P. | Article in Journal | | 1984 |
| Archbishop Hughes and the question of Ireland, 1829-1862 | O'Connor, Charles P. | Article in Journal | | 1989 |
| Archbishop James Butler II : catechist to generations at home and abroad | Wallace, Patrick, [Rev.] | Article in Book | | 1989 |
| Archbishop James Duhig : Limerick 1871 - Brisbane 1965 | Boland, T. P. | Article in Journal | | 1988 |
| Archbishop John Baptist Purcell | Forde, R. | Article in Journal | | 1988 |
| Archbishop John Brenan (1625-1693) : his life and work | Breathnach, Catherine | Article in Journal | | 1993 |
| Archbishop John Carpenter and the catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| Archbishop John Hughes : 1838-1864 | Fratini, Mary ElizabethO'Hurley-Pitts, Michael | Article in Book | | 1999 |
| Archbishop John Hughes and the New York schools controversey of 1840-43 | Meenagh, Martin L. | Article in Journal | | 2004 |
| Archbishop John MacHale in Irish politics, 1830-50 | Clancy, Deirdre | Article in Journal | | 1958 |
| Archbishop John Thomas Troy (1739-1823) | Purcell, Mary | Article in Journal | | 1978 |
| Archbishop John Thomas Troy (1739-1823) | Keogh, Dáire | Article in Journal | | 1995 |
| Archbishop John Thomas Troy and the catholic church in Ireland, 1787-1817 | McNally, Vincent Joseph Connor | Thesis | | 1977 |
| Archbishop Leahy and faction fighting | O'Dwyer, Christopher | Article in Journal | | 1989 |
| Archbishop Leahy of Cashel (1806-75) | O'Dwyer, Christopher, Rev. | Thesis | | 1971 |
| Archbishop Lynch and 'New Ireland' : and unfulfilled dream for Canada's Northwest | Stortz, Gerald J. | Article in Journal | | 1982 |
| Archbishop Lynch's 'The evils of wholesale and improvident emigration from Ireland', (1864) | Lynch, John Joseph | Article in Journal | | 1983 |
| Archbishop Magauran and his return to Ireland, October 1592 | Walsh, Micheline Kerney | Article in Journal | | 1989 |
| Archbishop Malachy O'Quaelly, vicar apostolic of Killaloe, 1620-30; archbishop of Tuam, 1630-45 | Gleeson, Dermot F. | Article in Journal | | 1948 |
| Archbishop McGettigan, the Catholic bishops of Ireland and the Irish land bill 1881 | Bradley, John, Rev. | Article in Journal | | 1998 |
| Archbishop Murray of Dublin and the episcopal clash on the inter-denominational school scripture lessons controversy, 1835-1841 | Griffin, Seán | Article in Journal | | 1995 |
| Archbishop Murray, 1768-1852 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1952 |
| Archbishop Oliver Plunkett : Ireland's first canonized martyr | Curtayne, Alice | Article in Journal | | 1976 |
| Archbishop Philip Phillips (1785-87) | Claffey, Tony | Article in Journal | | 2016 |
| Archbishop Richard Creagh of Armagh, 1525-1586 : an Irish prisoner of conscience of the Tudor era | Lennon, Colm | Monograph or Collective Volume | Four Courts | 2000 |
| Archbishop Simonds and the Myshall connection | Byrne, Edward | Article in Journal | | 1993 |
| Archbishop Troy (1739-1823) and revolution | Peel, Edmund J., Rev. | Thesis | | 1956 |
| Archbishop Troy, the Catholic church and Irish radicalism, 1791-1793 | Keogh, Dáire | Article in Book | | 1993 |
| Archbishop Walsh | Leslie, John Randolph (Shane), 1885–1971 | Article in Book | | 1960 |
| Archbishop Walsh and St Mary's University College, 1893-1908 | O'Driscoll, Finbarr | Article in Journal | | 1985 |
| Archbishop Walsh and the 1913 Lock-out | Morrissey, Thomas J. | Article in Journal | | 2013 |
| Archbishop Walsh and the Commission on Manual and Practical Instruction | O'Donovan, Patrick F. | Article in Journal | | 1986 |
| Archbishop William Hayden (1868-1936) | Cassin, Maeve | Article in Journal | | 1994 |
| Archbishops Edmund MacGauran and Malachy O'Queely : some circumstances of their deaths | Connellan, M. J. | Article in Journal | | 1948 |
| Archdeacon Luke Rochford and his circle | Brady, John, d.1963 | Article in Journal | | 1961 |
| Archipelagic identities in Europe : Irish nuns in English convents | Coolahan, Marie-Louise | Article in Book | | 2013 |
| Archival odyssey, 1958-1995 | Larkin, Emmet | Article in Journal | | 1997 |
| Archives of the archdiocese of Boston | Rahill, Peter J. | Article in Journal | | 1959 |
| Archives of the Catholic Church in Ireland | Sheehy, David C. | Article in Book | | 1991 |
| Archives of the Franciscan Missionaries of the Divine Motherhood | Batchelor, Victoria, Sister | Article in Journal | | 2004 |
| Archives of the Irish Augustinians, Rome : a summary report | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1955 |
| Are we there yet? Ulster migrants in Connacht and Co. Clare | MacMahon, Michael | Article in Journal | | 2010 |
| Arguments for an integrated school system | Spencer, A. E. W. | Article in Book | | 1987 |
| Arklow Catholic Tennis Club | Anonymous | Article in Journal | | 1996 |
| Arms of Archbishop Carpenter | Slevin, Gerard | Article in Journal | | 1955 |
| Arrangements for the integration of Irish immigrants in England and Wales | Spencer, A. E. W. | Monograph or Collective Volume | Irish Manuscripts Commission | 2012 |
| Arrival, assertion and acclimatisation : or Context and contrasts : a preliminary checklist of works on the Irish Catholic experience in the North West of England | Aspinwall, Bernard | Monograph or Collective Volume | North West Catholic History Society | 1996 |
| Arthur Cox, 1891-1965 | McCague, Eugene | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| Article 44 reconsidered | Meehan, Niall | Article in Journal | | 2019 |
| Article 44.1 and the 'special position' of the Catholic Church in the Irish Constitution, 1937-1972 | Coffey, Donal K.Ní Leathlobhair, Niamh | Article in Book | NA | 2021 |
| Artisans, sectarianism and politics in Dublin, 1829-48 | Hill, Jacqueline R. | Article in Journal | | 1981 |
| Arts and crafts and revivalism in Catholic Church decoration : a brief duration | Wilson, Ann | Article in Journal | | 2013 |
| As one sent : Peter Kenney SJ, 1779-1841 : his mission in Ireland and North America | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 1996 |
| Ascendancy to oblivion : the story of the Anglo-Irish | McConville, M. | Monograph or Collective Volume | Quartet | 1986 |
| asking for trouble : the story of an escapade with disproportionate consequences | Craig, Patricia | Monograph or Collective Volume | Blackstaff Press | 2007 |
| Aspects of Irishness | Walsh, Richard | Article in Book | | 1977 |
| Aspects of Rice family history | Feheney, J. M. | Article in Book | | 1994 |
| Aspects of the "religious" question in Ireland | Brooks, Sydney | Article in Journal | | 1912 |
| Aspects of the continental education of Irish students in the reign of Elizabeth I | Hammerstein, Helga | Article in Book | | 1971 |
| At Aodh Ó Néill's right hand : Archbishop Flaithrí Ó Maolchonaire and the Red Hand of Ulster | Hazard, Benjamin | Article in Book | | 2013 |
| At school on the Bullawn : 150 years of the C.B.S. in New Ross | | Monograph or Collective Volume | New Ross C.B.S. Secondary School | 2000 |
| At the coalface : recollections of a city and country priest, 1950-2000 | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Columba | 2000 |
| At the edge of the abyss : poems by Brian Mac Giolla Phádraig (c.1580-c.1652) | Moylan, Séamus | Article in Journal | | 1993 |
| Athenry church 1853 | King, Tony | Article in Journal | | 1997 |
| Athlone, 1685; Limerick, 1710 : religious riots or charivaris? | Barnard, T. C. (Toby Christopher) | Article in Journal | | 1993 |
| Attitudes to the rosary and its performance in Donegal in the nineteenth and twentieth centuries | Lysaght, Patricia | Article in Journal | | 1998 |
| Aubrey Gwynn : the Jesuit | O'Donoghue, Fergus | Article in Journal | | 1992 |
| Aubrey Gwynn S.J. (1892-1983) | Hurley, MichaelKelly, Fiona | Article in Journal | | 1993 |
| Augustine Birrell and Archbishop William Walsh's influence on the founding of the National University | O'Flynn, Gráinne | Article in Journal | | 1976 |
| Augustine Gibbon de Burgo : a study in early Irish reaction to Luther | Hennig, John | Article in Journal | | 1947 |
| Augustinian martyrs and missionaries 1649-1659 | | Article in Journal | | 1994 |
| Augustinus Gibbon de Burgo, OESA, und die Wiedererrichtung des theologischen Studiums der Augustinereremiten an der Universität Erfurt | Kleineidam, Erich | Article in Journal | | 1978 |
| Augustus Welby Northmore Pugin (1812-52) : a biographical portrait | Meldon, Jeanne | Article in Book | | 2012 |
| Austin Clarke and the consolations of Irish Catholicism | Farrell, Tyler | Article in Journal | | 2005 |
| Australia | McGovern, J. J.O'Farrell, Patrick James | Monograph or Collective Volume | Gill | 1971 |
| Australia : the influence of the Irish on the history of the church in Australia | Cosgrave, A. P. | Article in Journal | | 1947 |
| Australia remembers Rome and Ireland | Hunt, T. | Article in Book | | 1956 |
| Baileborough National District Model School, County Cavan | Franks, Lyn | Article in Journal | | 2018 |
| Ballinasloe, 1826 : Catholic emancipation, political tourism and the French liberal agenda | Conroy, Jane | Article in Journal | | 2002 |
| Ballindrimley in the 1790s | Connolly, Padraig | Article in Journal | | 1994 |
| Ballybeg priory. Parts 1-2 | Shine, Michael | Article in Journal | | 1994 |
| Ballygunner Temple | Grogan, Patrick | Article in Journal | | 2008 |
| Ballyhaunis Friary : [St Mary's Abbey founded c. 1400] | O'Connor, John | Monograph or Collective Volume | Greensprint | 1996 |
| Ballyheigue : our Christian heritage | | Monograph or Collective Volume | | 2012 |
| Ballyheigue parish today | Leane, Tom, Rev. | Article in Book | | 2012 |
| Ballymonie old church (1826-1925) | Hasson, Seamus | Article in Journal | | 2000 |
| Ballyshonin and Loughane mass rocks | Gabriel, Brian | Article in Journal | | 2011 |
| Baltinglass convent | Morrissey, Therese | Article in Journal | | 1983 |
| Banfhondúirí Atha Cliath | De Paor, Máire | Monograph or Collective Volume | Preas Cholm Cille | 1988 |
| Bannow school (1821-1826) | Doyle, P. A., OSA | Article in Journal | | 1920 |
| Baptisms, marriages and Lithuanians; or, "Ghetto? What Ghetto?" : some reflections on modern Catholic historical assumptions | Aspinwall, Bernard | Article in Journal | | 2000 |
| Barr an Uisce! : St Patrick's Church, Barranisky, Co. Wicklow | McCarthy, Patrick | Monograph or Collective Volume | The author | 2003 |
| Barry's Bossuet in Elysium : Catholicism and counter-revolution in the 1790s | Guernsey, Daniel R. | Article in Book | | 2010 |
| Bayside parish : silver jubilee, 1971-1996 | Anonymous | Monograph or Collective Volume | Bayside Parish | 1996 |
| Beatha Dhomhnaill Uí Chonaill | Ó Súilleabháin, Domnall | Monograph or Collective Volume | Foillseacháin Rialtais | 1936 |
| Before 1840 | Q., E. J. | Article in Book | | 1940 |
| Before the devotional revolution | Larkin, Emmet | Article in Book | | 2005 |
| Before the night grows late | O Riordan, John J | Monograph or Collective Volume | Columba Press | 2009 |
| Before the Night Grows Late | Ó Ríordáin, John J. CSsr | Monograph or Collective Volume | Columba Press | 2009 |
| Before the revolution : nationalism and social change and Ireland's Catholic elite, 1879-1922 | Pašeta, Senia | Monograph or Collective Volume | Cork University Press | 1999 |
| Before the revolution : nationalism, social change and Ireland's Catholic elite, 1879-1922 | Pašeta, Senia | Monograph or Collective Volume | Cork University Press | 1999 |
| Begley's diocese of Limerick | Irwin, Liam | Article in Journal | | 1994 |
| Beidh siocháin grámhar againn le chéile | Ó Concubhair, Pádraig | Article in Journal | | 2000 |
| Being Catholic in Ireland | Inglis, Tom | Article in Book | Oxford University Press | 2024 |
| Being Scottish in an Irish Catholic church in a Scottish Presbyterian settlement : Otago's Scottish Catholics, 1848–1895 | Brosnahan, Seán | Article in Journal | | 2012 |
| Being Scottish in an Irish Catholic Church in a Scottish Presbyterian settlement : Otago's Scottish Catholics, 1848–1895 | Brosnahan, Seán | Article in Journal | | 2012 |
| Belfast from Loyalty to Rebellion | Goldring, Maurice | Monograph or Collective Volume | Lawrence and Wishart | 1991 |
| Belgium | De Wiel, Jérome aan | Article in Book | | 2013 |
| Beloved Brethern. Bishop Morrisroe's Lenten Pastoral 1917 | Farry, Michael | Article in Journal | | 2018 |
| Beneath cathedral towers : celebrating 70 years of the Cathedral of Christ the King, Mullingar, and its parishioners | | Monograph or Collective Volume | Mullingar Cathedral Book Committee | 2009 |
| Bernard Brady, O. P., parish priest of Derryvullen, 1770-1800 | Fenning, Hugh | Article in Journal | | 1967 |
| Bernard Sheridan - a man of steel | Mulligan, William, 1877-1968 | Article in Journal | | 2006 |
| Betrayal of trust : the Father Brendan Smyth affair and the Catholic church | Moore, Chris | Monograph or Collective Volume | Marino Press | 1995 |
| Between conflict and coexistence : The Catholic community in Ireland as a "visible underground Church" in the late sixteenth and early seventeenth centuries | Lotz-Heumann, Ute | Article in Book | | 2009 |
| Between four kingdoms : international Catholicism and Colonel William Semple | Redworth, Glyn | Article in Book | | 2002 |
| Between isolation and integration : religion, politics, and the Catholic Irish in Preston, C.1829-1868 | Hepworth, Jack | Article in Journal | | 2020 |
| Beyond ambivalence : Variations of Catholic anti-semitism in turn-of-the-century Baltimore | Rahden, Till van | Article in Journal | | 1994 |
| Beyond the red gauntlet | Bill, AnneFoster, B. A.Verner, Nicola | Monograph or Collective Volume | AB publications | 2002 |
| Beyond the sectarian divide : the social bases and political consequences of nationalist and unionist party competition in Northern Ireland | Duffy, MaryEvans, Geoffrey | Article in Journal | | 1997 |
| Bibliography [2007 relating to Roman Catholicism] | Murphy, Martin | Article in Journal | | 2008 |
| Bibliotheca Catholica Neerlandica impressa, 1500-1727 | Anonymous | Monograph or Collective Volume | [s.n.] | 1954 |
| Bicentenary of St Joseph's Church, Tinryland, Co. Carlow | Byrne, Maureen | Article in Journal | | 2020 |
| Big Biddy Higgins | O'Brien, Pat | Article in Journal | | 2002 |
| Bigotry and politics in Belfast from the Victorian era to the twentieth century | Boyd, Andrew, 1921- | Article in Book | | 1995 |
| Biographical note : Father Bryan O'Cannan (1692-1743) | Ó Canann, Tomás | Article in Journal | | 2000 |
| Birds, bugs, bogs,botany and biodiversity: some clergymen naturalists associated with Ireland | Baker, Richard A. | Article in Journal | | 2013 |
| Birmingham's Irish community and the Murphy Riots of 1867 | Davis, Patsy | Article in Journal | | 2006 |
| Birr, Convent of Mercy. Convent centenary | Anonymous | Article in Journal | | 1940 |
| Bishop Cartwright's death-bed | Beddard, Robert | Article in Journal | | 1984 |
| Bishop Caulfield's 'Relatio status' 1796 | | Article in Journal | | 1966 |
| Bishop Conor O'Devanney OFM c.1533-1612 | Silke, John J. | Article in Journal | | 1988 |
| Bishop Cornelius Egan's diocesan reports to Rome | O'Shea, Kieran | Article in Journal | | 1979 |
| Bishop Coyle's pious miscellany | Silke, John J. | Article in Journal | | 1994 |
| Bishop Daniel Cohalan of Cork on republican resistance and hunger strikes : a theological note | Corkery, Pádraig | Article in Journal | | 2002 |
| Bishop Daniel Delany and the Jesuits | Sweetman, Stephen | Article in Journal | | 2019 |
| Bishop Edward Thomas O'Dwyer and the course of Irish politics, 1870-1917 | O'Callaghan, Edward | Thesis | | 1976 |
| Bishop Edward Thomas O'Dwyer and the fall of Parnell | O'Callaghan, Edward P. | Article in Journal | | 1978 |
| Bishop Edward Thomas O'Dwyer of Limerick, 1842-1917 | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2003 |
| Bishop Foley and two crises - Home Rule and conscription | Power, Ann | Article in Journal | | 2006 |
| Bishop Francis Moylan | O'Farrell, Josephine | Thesis | | 1974 |
| Bishop Hay and Patrick Wogan | Anderson, W. J. | Article in Journal | | 1967 |
| Bishop Hoare and politics | Mulryan, Maureen | Article in Journal | | 2007 |
| Bishop in the dock : the sedition trial of James Liston | Sweetman, Rory | Monograph or Collective Volume | Auckland University Press | 1997 |
| Bishop in the dock : the sedition trial of James Liston in New Zealand | Sweetman, Rory | Monograph or Collective Volume | Irish Academic Press | 2007 |
| Bishop Ireland's Connemara experiment | Shannon, James P. | Article in Journal | | 1957 |
| Bishop James Corbett : freeman of Limerick | Anonymous | Article in Journal | | 1988 |
| Bishop James Donnelly and the Catholic electorate. | Carville, Gary | Article in Journal | | 2012 |
| Bishop James Moynagh of Calabar | Cooke, Colman M. | Monograph or Collective Volume | Columba Press | 2014 |
| Bishop John Brenan, the intimate of Blessed Oliver | Power, P. | Article in Book | | 1937 |
| Bishop John Connolly : 1815-1825 | Fratini, Mary Elizabeth | Article in Book | | 1999 |
| Bishop John Dubois : 1825-1842 | Fratini, Mary ElizabethO'Hurley-Pitts, Michael | Article in Book | | 1999 |
| Bishop John England | MacCarron, Patrick | Article in Journal | | 2013 |
| Bishop John England (1786-1842) and antebellum southern slavery | Regan, Joe | Article in Book | | 2015 |
| Bishop John England of Charleston : catholic spokesman and southern intellectual, 1820-1842 | Saunders, R. | Article in Journal | | 1993 |
| Bishop John Keys O'Doherty 1889-1907 | Canning, B. J. (Bernard J.) | Article in Journal | | 2006 |
| Bishop John MacEvilly and the Catholic church in Galway 1857-1902 | Bane, Liam | Article in Book | | 1996 |
| Bishop John O'Molony : a great prelate of the penal days | G., J. S. | Article in Journal | | 1937 |
| Bishop John O'Molony of Killaloe (1617-1702) | Halpin, Sean | Article in Journal | | 1989 |
| Bishop Keeffe of Kildare and Leighlin, A.D. 1702-87 | Brenan, Martin | Article in Journal | | 1937 |
| Bishop Kelly of Western Nigeria | O'Shea, Michael | Monograph or Collective Volume | Society of African Missions | 2006 |
| Bishop Michael Browne of Galway (1937-1976 and the regulation of public morality | Donnelly, James S., Jr | Article in Journal | | 2013 |
| Bishop Michael Browne of Galway and anti-communism, 1937-1976 | Madden, Gerard | Article in Journal | | 2014 |
| Bishop Moran : Irish politics and Catholicism in New Zealand | Laracy, Hugh M. | Article in Journal | | 1970 |
| Bishop Moylan's Relatio status, 1785 | NA | Article in Journal | | 1974 |
| Bishop Moylan's report of the diocese of Cork, 1802 | O'Farrell, Mary Pius | Article in Journal | | 2001 |
| Bishop Nicholas French and the Second Ormond Peace, 1648-9 | Corish, Patrick J. | Article in Journal | | 1948 |
| Bishop O'Brien's Vatican manuscript | Ó Dochartaigh, Caitríona | Article in Journal | | 2008 |
| Bishop of the land war : Dr Patrick Duggan, bishop of Clonfert, 1813-1896 | Anonymous | Monograph or Collective Volume | Veritas | 1987 |
| Bishop Patrick Foley and the Carlow by-election of 1908 | Power, Anne | Article in Journal | | 2005 |
| Bishop Patrick Lynch of Charleston and his visit to Roslea in 1864 | Corr, Seán | Article in Journal | | 2010 |
| Bishop Patrick O'Donnell and Rome | Silke, John J. | Article in Journal | | 2013 |
| Bishop Ricards and Dean Croghan : a contrasting tale of two Wexford missionaries in South Africa | Comerford, Patrick | Article in Journal | | 2001 |
| Bishop Richard Luke Concannen : 1747-1810 | Fratini, Mary ElizabethO'Hurley-Pitts, Michael | Article in Book | | 1999 |
| Bishop Thomas Lewis O'Beirne and his church-building programme in the diocese of Meath, 1798-1823 | Gallagher, Mary C. | Thesis | | 2009 |
| Bishop Thomas Nulty and the Irish land question. Part 1 : 1876-79 | Flynn, Gabriel | Article in Journal | | 1984 |
| Bishop Thomas Nulty and the Irish land question. Parts 2 and 3, 1879-1893 | Flynn, Gabriel | Article in Journal | | 1985 |
| Bishop Wadding's notebook | | Article in Journal | | 1970 |
| Bishop Walter Lynch (c.1593-1663) and the Black Madonna of Gyor | Ó hAnnracháin, Tadhg | Article in Book | | 2015 |
| Bishop William O'Higgins finally honoured | Editor | Article in Journal | | 2007 |
| Bishop Young's catechism | Tynan, Michael | Article in Journal | | 1984 |
| Bishops and abbots of Cloyne | Kelleher, Thomas | Article in Book | | 1994 |
| Bishops of Ferns | De Vál, Seamus S. | Article in Book | | 1999 |
| Bishops of Ireland 1870-1987 | Canning, B. J. (Bernard J.) | Monograph or Collective Volume | Donegal Democrat | 1987 |
| Bishops of Rathlury and Derry | Daly, Edward | Article in Journal | | 1980 |
| Black and Irish relations in 19th-century Boston : the interesting case of lawyer Robert Morris | Leonard, William | Article in Journal | | 2009 |
| Blackrock College, 1860-1960 | Farragher, J. | Article in Journal | | 1962 |
| Blessed Charles Meehan, O.F.M. 1645-79 | Meehan, Patrick F. | Monograph or Collective Volume | Leinster Express Newspapers | 1990 |
| Blessed Columba Marmion : a short biography | Tierney, Mark | Monograph or Collective Volume | Columba | 2000 |
| Blessed Oliver Plunket and the Popish Plot in Ireland | Walker, Breifne | Article in Journal | | 1968 |
| Blessed Oliver Plunkett | Curtis, Emmanuel | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| Blessed Oliver Plunkett : historical studies | Various authors | Monograph or Collective Volume | Gill | 1937 |
| Blessed Oliver Plunkett and his Irish Jesuit schools | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1941 |
| Blessed Oliver Plunkett and the tories | Mac Phóil, Donnchadha | Article in Journal | | 1959 |
| Blessed Oliver Plunkett's report on the diocese of Armagh, 1670 | | Article in Journal | | 1959 |
| Blood, dust and cucumbers : constructing the world of Hisperic Latinity | Harvey, Anthony | Article in Book | | 2015 |
| Blue plaque unveiling in honour of Archbishop John Joseph Hughes (1797-1864) | Martin, EamonMcGuinness, JosephMcKenna, Eileen | Article in Journal | | 2017 |
| Blurring the difference : the politics of identity in Northern Ireland | McDonald, Michael | Article in Book | | 1991 |
| Boetius Egan D.D. The last archbishop of the Penal Days. Archbishop of Tuam 1787-98 | Durkan, Liam | Article in Journal | | 2005 |
| Boetius MacEgan of Ross | Mooney, Canice | Monograph or Collective Volume | Four Masters | 1950 |
| Boetius McEgan bishop and martyr | Ó Riain, Pádraig | Article in Journal | | 1986 |
| Boinn an n Athair Meitiú agus a chuairteanna ar an Iúr agus ar an Pointe, 1841 | Céitinn, Séamus | Article in Journal | | 1998 |
| Bonaventura Ó hEoghusa's 'An Teagasg Críosdaidhe' 1611-1614 : a reassessment of its audience and use | Ryan, Salvador | Article in Journal | | 2004 |
| Booterstown Parish | Lyng, Paul | Article in Journal | | 2007 |
| Border ballads and sectarian affrays | McGimpsey, Christopher D. | Article in Journal | | 1982 |
| Borderline politics: Meath clerical involvement in the East Cavan by-election, June 1918 | Cogan, John F. | Article in Journal | | 2018 |
| Born in Ireland, buried in Canada | Radigan, Thomas B. | Article in Journal | | 1994 |
| Boston book censorship in the twenties | Boyer, Paul S. | Article in Journal | | 1963 |
| Boston Catholics : a history of the church and its people | O'Connor, Thomas H., 1922-2012 | Monograph or Collective Volume | Northeastern University Press | 1998 |
| Boston priests 1848-1910 : a study of social and intellectual change | Merwick, Donna | Monograph or Collective Volume | Harvard University Press | 1973 |
| Boston's Catholics and the Spanish civil war : 1936-1939 | Crosby, Donald F. | Article in Journal | | 1971 |
| Bourne, Norfolk and the Irish parliamentarians : Roman Catholics and the Education Bill of 1906 | McClelland, Vincent Alan | Article in Journal | | 1996 |
| Bram Stoker, the mystery of the sea : Ireland and the Spanish-Cuban-American war | Smith, Andrew | Article in Journal | | 1998 |
| Breaking the silence of child sexual abuse in the Irish-American Catholic Church | Ebest, Sally Barr | Article in Book | | 2024 |
| Breccan Cathe, a forgotten Derry saint | Mac Giolla Easpaig, Dónall | Article in Journal | | 1996 |
| Brenan, Carew, and their ecclesiastical histories | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| Brethren in Christ : Frederick Lucas and social Catholicism in Ireland | Maume, Patrick | Article in Book | | 2013 |
| Brett of Craanluskey and Ballygowan | Aughney, John P. P. | Article in Journal | | 1992 |
| Brevis et summaria relatio : an unpublished account of Dominican martyrs and exiles, 1656 | | Article in Journal | | 1993 |
| Bringing it all back home : Mary Butler (1641-1723), Benedictine abbess of Ypres | Kelly, James E. | Article in Book | | 2015 |
| Britan and Ireland | Ryrie, Alec | Article in Book | | 2005 |
| British and Irish experiences and impressions of central Europe, c.1560-1688 | Worthington, David | Monograph or Collective Volume | Ashgate | 2012 |
| British and Irish Novels and the Catholic Imagination | Johnson, Bonnie Lander : Mezaros, Julia | Article in Book | Oxford University Press | 2023 |
| British Catholics and the South African War, 1899-1900 | Davies, John | Article in Book | | 2003 |
| Britishness and otherness : an argument | Colley, Linda | Article in Book | | 1993 |
| Britishness, Irishness and class : Catholic identities in Anglo-Australia, 1880-1916 | McCarthy, Scott Denis | Article in Journal | | 2025 |
| Brother Paul James O'Connor (1796-1878) | Ruane, Kevin | Article in Journal | | 1992 |
| Brother Paul Townsend : exemplar of the Presentation tradition | Feheney, J. M. | Article in Book | | 1996 |
| Brother Potamian, educator and scientist | Battersby, W. J. | Monograph or Collective Volume | | 1953 |
| Building new lives, maintaining old identities: Irish Associations in Michigan's Copper Country, 1860-1900 | Mulligan, William H., Jr | Article in Journal | | 2015 |
| Building St. Patrick's Cathedral | McNierney, Patrick J. | Article in Journal | | 2004 |
| Bunclody old cemetery : church of St Mary Magdalene 1826-1970 | Anonymous | Monograph or Collective Volume | [s.n.] | 1989 |
| Bureau of Military History : testament of Michael Curran | Curran, Michael | Article in Book | | 2007 |
| Burgatia (land of the burgesses or freemen of Ross) | O'Callaghan, Fachtna | Article in Journal | | 2007 |
| Burke and the Aisling : 'Homage of a Nation' | O'Donnell, Katherine, 1966- | Article in Journal | | 2007 |
| Burke's Irish history - a hypothesis | Weston, J. C. | Article in Journal | | 1962 |
| Bushypark : Our people, our place. A parish history | Kelly, Christy | Monograph or Collective Volume | Bushypark Pastoral Council | 2016 |
| Butler and the churches | Tobin, Robert | Article in Book | | 2003 |
| By pen and pulpit : the life and times of the author Canon Sheehan | Barry, Michael | Monograph or Collective Volume | Saturn Books | 1990 |
| By the narrow gate : a bicentenary history : Patrician bicentenary, 1808-2008 | Patrician Brothers. General Secretariat. | Monograph or Collective Volume | Patrician General Secretariat | 2008 |
| Byways. A look at lesser used sources. (Roman Catholic marriage records) | Evans, Mihail D. | Article in Journal | | 1996 |
| Caherciveen's musical priest | McAuliffe, Nicholas | Article in Journal | | 1991 |
| Cáipéisí Doimniceánacha ón 17ú céad | Mac Niocaill, Gearóid | Article in Journal | | 1958 |
| Calendar customs and festival practices in Ireland | Danaher, Kevin, 1913-2002 | Article in Book | | 1977 |
| Calendar of Bray papers | Meagher, Claude | Article in Journal | | 1970 |
| Calendar of documents relating to St Anthony's College, Louvain, 1782-5, in Brussels, general archives of the realm, Privy Council, 713 A | Wijffels, Alain A. | Article in Journal | | 1982 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland | Anonymous | Monograph or Collective Volume | HMSO | 1955 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol.18 : Pius III and Julius II. Vatican Registers (1503-1513); Lateran Registers (1503-1508) | | Monograph or Collective Volume | Stationery Office for Irish Manuscripts Commission | 1989 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol.19 : 1503-1513. Lateran registers part 2 | | Monograph or Collective Volume | Irish Manuscripts Commission | 1998 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : vol. 14 : papal letters, 1484-1492 | | Monograph or Collective Volume | Stationery Office | 1960 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland. Vol. 13, parts 1-2 | | Monograph or Collective Volume | [s.n.] | 1955 |
| Calendar of entries in the Papal registers relating to Great Britain and Ireland. Vol. XVIII : Pius III and Julius II : Vatican registers (1503-1513); Lateran registers (1503-1508) | | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1989 |
| Calendar of Irish material in ... Fondo di Vienna in Propaganda archives | | Article in Journal | | 1990 |
| Calendar of Irish material in the files of Jean Fromont, notary at Paris, May 1701-14 Jan 1730, in the Archives Nationales, Paris : part 1, 1701-1715 | Swords, Liam | Article in Journal | | 1993 |
| Calendar of Irish material in the files of Jean Fromont, notary at Paris, May 1701-24 Jan. 1730, in the Archives Nationales, Paris. Pt. 2 : 1716-30 | Swords, Liam | Article in Journal | | 1994 |
| Calendar of Papal letters relating to Great Britain and Ireland, vol. XXI, 1513-1521, Leo X, Lateran registers, part 2 | NA | Monograph or Collective Volume | Irish Manuscripts Commission | 2024 |
| Calendar of state papers, relating to English affairs, preserved principally at Rome, in the Vatican archives and library. Elizabeth, [vols.] 1-2 : 1558-1578. 2 vols. | Rigg, James Macmullen, 1855-1926 | Monograph or Collective Volume | HMSO | 1916 |
| Calendar of the papers of Dr Bray, archbishop of Cashel and Emly (1792-1820) | Meagher, Claude | Article in Journal | | 1968 |
| Calendar of the papers of the Irish College, Paris, 1316-1800 | Swords, Liam | Thesis | | 1979 |
| Calendar of volume 13 of the "Fondo di Vienna" in propaganda archives : part 2, ff. 201-401 | Millett, Benignus | Article in Journal | | 1983 |
| Calendar of volume 13 of the "Fondo di Vienna" in propaganda archives : part 3, ff. 402-522 | Millett, Benignus | Article in Journal | | 1984 |
| Calendar of volume 14 of the 'Fondo de Vienna' in propaganda archives, part 1, ff 1-131 | Millett, Benignus | Article in Journal | | 1987 |
| Calendar of volume 14 of the Fondo di Vienna in Propaganda Archives : part 2, ff 132-283 | Millett, Benignus | Article in Journal | | 1988 |
| Calendar of volume 14 of the Fondo di Vienna in Propaganda Archives : part 3, ff. 284-395 | | Article in Journal | | 1990 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda archives : Part 1, ff 1-102 | Millett, Benignus | Article in Journal | | 1996 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda Archives : Part 3, ff 217-80 | Millett, Benignus | Article in Journal | | 1999 |
| Calendar of Volume 16 of the Fondo di Vienna in Propaganda archives : Part 4, ff. 281-371 | Millett, Benignus | Article in Journal | | 2001 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda archives, part 2, ff 103-216 | Millett, Benignus | Article in Journal | | 1998 |
| Calendar of volume 3 (1672-5) of the 'Scritture riferite nei congressi, Irlanda' in Propaganda Archives : 1 | Millett, Benignus | Article in Journal | | 1978 |
| Calendar of volume 3 (1672-5) of the 'Scritture riferite nei congressi, Irlanda' in propaganda archives : part 2, ff 201-518 | Millett, Benignus | Article in Journal | | 1979 |
| Calendar of volume, 2 (1669-71) of 'Scritture riferite nei congresi Irlanda' in propaganda archives : part 2 | Millett, Benignus | Article in Journal | | 1975 |
| Calendar of volume1 (1625-68) of the collection 'Scritture riferite nei congressi, Irlanda' in Propaganda Archives | Millett, Benignus | Article in Journal | | 1964 |
| Camán and crozier : the Catholic church and the GAA, 1884-1902 | Gillespie, Simon,Hegarty, Roddy, | Article in Book | | 2009 |
| Canada | Monahan, A. P. | Monograph or Collective Volume | Gill | 1971 |
| Canadian Catholics, Loyalty and the British Empire, 1763 - c.1901 | McGowan, Mark G. | Article in Book | | 2014 |
| Candle beams : Cloughjordan priests, religious and lay missionaries | | Monograph or Collective Volume | Cloughjordan Heritage Group | 2003 |
| Cannonballs and croziers : a history of Maynooth | Condrum, PatriciaDrennan, JohnNylan, DominicNí Bhrolcháin, Muireann | Monograph or Collective Volume | Maynooth Community Council | 1994 |
| Canon and martial law : William O'Brien, catholicism and Irish nationalism | Newsinger, John | Article in Journal | | 1981 |
| Canon Brosnan and Cnoc na dTobar, Cahersiveen | Bric, Maurice J. | Article in Journal | | 2023 |
| Canon Corrigan : achievement and challenge | Ó Ferghail, Fearghus | Article in Book | | 1997 |
| Canon Edward J. Whyte - a profile | Grace, Daniel | Article in Journal | | 1996 |
| Canon Frederick Donovan's Dunlavin, 1884-1896 : a west Wicklow village in the late nineteenth century | Lawlor, Chris | Monograph or Collective Volume | Irish Academic Press | 2000 |
| Canon J.. McGarry, editor (of The Furrow) 1950-1977 | Drury, Ronan | Article in Journal | | 1977 |
| Canon J.G. McGarry, editor of 'The Furrow', 1950-1977. The man, the style and the issues | McDonagh, Enda | Article in Journal | | 1977 |
| Canon James Kearney O'Neill 1857-1922 Founder of The Knights of St. Columbanus | Rogers, Frank | Monograph or Collective Volume | Rogers - self-published | 2012 |
| Canon John Burton's biographical sketch of Canon Sheehan | Burton, John, Canon | Article in Journal | | 2015 |
| Canon John Burton's biographical sketch of Canon Sheehan | Burton, John, Canon | Article in Journal | | 2015 |
| Canon John O'Hanlon (1821-1905) : his early days in St Louis | Concannon, Helena | Article in Journal | | 1947 |
| Canon John O'Rourke : historian of the Great Famine | Comerford, R.V. (Richard Vincent) | Article in Book | | 1995 |
| Canon Justin McCarthy, P.P. of Mallow 1847-1852 : notes on his life and times | Kavanagh, Myra | Article in Journal | | 2012 |
| Canon Keller of Youghal | Larkin, Felix M. | Article in Book | | 2013 |
| Canon Power and Rian Bó Phádraig | Cashman, John | Article in Journal | | 1990 |
| Canon Sheehan | Forde, R. | Article in Journal | | 1980 |
| Canon Sheehan | Barry, John | Article in Journal | | 1946 |
| Canon Sheehan - unpublished manuscripts | Forde, R. | Article in Journal | | 1995 |
| Canon Sheehan : a turbulent priest | Clifford, Brendan | Monograph or Collective Volume | Aubane Historical Society | 1990 |
| Canon Sheehan : the gardener-philosopher of Doneraile | Buckley, Bobby | Article in Journal | | 2012 |
| Canon Sheehan of Doneraile | MacGowan, Kenneth | Monograph or Collective Volume | Catholic Truth Society | 1963 |
| Canon Sheehan of Doneraile, 1852-1913 : outlines for a literary biography | O'Brien, James | Monograph or Collective Volume | Smenos | 2013 |
| Canon Sheehan's dystopia : 'Godless science' and 'Survival of the fittest' | O'Leary, Don | Article in Book | | 2014 |
| Canon Sheehan's dystopia : 'Godless science' and 'Survival of the fittest' | O'Leary, Don | Article in Book | | 2014 |
| Canon Sheehan, from unpublished letters | Forde, Robert | Article in Journal | | 1986 |
| Canon Tom and the City of Taghmon | Scallan, Eithne | Article in Journal | | 2005 |
| Canon Ulick J. Bourke, 1829-87 | Concannon, Helena | Article in Journal | | 1950 |
| Canonical faculties on the Irish mission in the reign of Queen Elizabeth, 1558-1603 | Jones, F. M. | Article in Journal | | 1953 |
| Caoineadh Airt Uí Laoghaire. The contemporary political context | Cullen, L. M. (Louis Michael) | Article in Journal | | 1993 |
| Captaen na bhFear mBán : Father Nicholas Sheehy in history/folklore | Ó Cadhla, Stiofán | Article in Journal | | 2002 |
| Cardinal Basil Hume and Abbot Byrne | Smith, Sean | Article in Journal | | 2004 |
| Cardinal Bourne and Ireland | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1940 |
| Cardinal Cullen : biographical materials | Curran, M. J. | Article in Journal | | 1955 |
| Cardinal Cullen and Archbishop MacHale | Corish, Patrick J. | Article in Journal | | 1959 |
| Cardinal Cullen and Irish nationality | Steele, Edward David | Article in Journal | | 1975 |
| Cardinal Cullen and the National Association of Ireland | Corish, Patrick J. | Article in Book | | 1987 |
| Cardinal Cullen and the system of national education in Ireland | Doyle, Joseph | Article in Book | | 2011 |
| Cardinal Cullen's other capital : Belfast and the 'devotional revolution' | Connolly, Sean J. | Article in Book | | 2011 |
| Cardinal Cullen, early Fenianism, and the MacManus funeral affair | Rafferty, Oliver P. | Article in Journal | | 1995 |
| Cardinal Cullen, early Fenianism, and the MacManus funeral affair | Rafferty, Oliver P. | Article in Journal | | 1995 |
| Cardinal Daly’s memories of Sweet Loughguile | Dunlop, Eull | Article in Journal | | 1996 |
| Cardinal John McColoskey : 1864-1885 | Fratini, Mary Elizabeth | Article in Book | | 1999 |
| Cardinal Manning : a biography | Gray, Robert | Monograph or Collective Volume | [s.n.] | 1985 |
| Cardinal Manning : his public life and influence, 1865-92 | McClelland, Vincent Alan | Monograph or Collective Volume | Oxford University Press | 1962 |
| Cardinal Manning and the temporal power | Norman, E. R. | Article in Book | | 1985 |
| Cardinal Moran and the A.L.P. : a study in the encounter between Moran and socialism, 1890-1907 | Ford, Patrick K. | Monograph or Collective Volume | Melbourne UP|Cambridge University Press | 1966 |
| Cardinal Newman and the Catholic University : a selection from Newman's Dublin writings | McCartney, DonalNewman, John Henry, cardinal, 1801-1890O'Loughlin, Thomas | Monograph or Collective Volume | University College Dublin | 1990 |
| Cardinal Patrick Francis Moran | Ellis, William | Article in Journal | | 1983 |
| Cardinal Patrick Francis Moran of Leighlinbridge, 1830-1911 | Ó Fearghail, Fearghus | Article in Book | | 2008 |
| Cardinal Patrick O'Donnell and Scotland | Canning, B. J. (Bernard J.) | Article in Journal | | 2001 |
| Cardinal Patrick O'Donnell, 1856-1927 | Ó Baoighill, Pádraig S. | Monograph or Collective Volume | Foilseacháin Chró na mBothán | 2008 |
| Cardinal Paul Cullen | Larkin, Emmet | Article in Book | | 1998 |
| Cardinal Paul Cullen and his world | | Monograph or Collective Volume | Four Courts | 2011 |
| Cardinal Pole's absolution of George Browne, Henry VIII's archbishop of Dublin | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1949 |
| Cardinal Samuel Stritch and his ancestors | MacMahon, Bryan | Article in Book | | 2012 |
| Cardinal Samuel Stritch of Chicago | MacMahon, Bryan, 1949- | Article in Journal | | 2013 |
| Cardinal William Conway, 1913-1977 | McGarry, J. G. | Article in Journal | | 1977 |
| Cardinal Wiseman and his associations with south Kilkenny | Dowling, Daniel | Article in Journal | | 1974 |
| Cardinal Wisemen (1802-1865) and his roots in Waterford and South Kilkenny | Walton, Julian C. | Article in Journal | | 2017 |
| Cardinal Wolsey, the native affinities, and the failure of reform in Henrician Ireland | Fitzsimons, Fiona | Article in Book | | 2004 |
| Care of the orphan and the aged by the Irish community of Québec city, 1847 and years following | O'Gallagher, Marianna | Article in Journal | | 1976 |
| Caring for Chicago's women and girls : the Sisiters of the Good Shepherd, 1859-1911 | Hoy, Suellen | Article in Journal | | 1997 |
| Caring for migrants : policy responses to Irish migration to England, 1940-1972 | Ewart, Henrietta | Thesis | | |
| Caring for the nation : a history of the Mater Misericordiae University Hospital | Nolan, M. Eugene, Sister | Monograph or Collective Volume | Gill & Macmillan | 2013 |
| Carleton and Lough Derg | Skeffington, Sean | Article in Book | | 2006 |
| Carleton's Ulster Catholics | Elliott, Marianne | Article in Book | | 2006 |
| Carleton, Catholicism and the comic novel | Krause, David | Article in Journal | | 1994 |
| Carlovians who served as chaplains in the defence forces 1922-1997 | Anonymous | Article in Journal | | 1997 |
| Carlow College 1793-1993 : the ordained students and teaching staff of St. Patrick's College, Carlow | McEvoy, John | Monograph or Collective Volume | St. Patrick's College | 1993 |
| Carlow College : two hundred years of education | McEvoy, John | Article in Journal | | 1992 |
| Carlow man - founder of four schools, from Cloneen, Nurney, Co. Carlow to America to eternity | Nevin, Martin | Article in Journal | | 2000 |
| Carnally (Cairn Eallaigh) - townland and mass rock | McShane, Michael | Article in Journal | | 1998 |
| Cashel & Emly heritage | Skehan, Walter G. | Monograph or Collective Volume | Abbey Books | 1993 |
| Cashel diocesan archives | Tierney, Mark | Article in Book | | 1989 |
| Castledockrell church 1842-1992 | Anonymous | Monograph or Collective Volume | The church | 1992 |
| Catalogue of Irish manuscripts in Mount Melleray Abbey, County Waterford | Ó Macháin, Pádraig | Monograph or Collective Volume | Dublin Inst. for Advanced Studies, School of Celtic Studies | 1991 |
| Catalogue of Irish material in fourteen volumes of the 'Scritture originali riferite nelle congregazioni generali' in propaganda archives | Millett, Benignus | Article in Journal | | 1967 |
| Catalogue of Irish material in vols 132-139 of the 'Scritture originali riferite nelle congregazioni generali' in propaganda archives | Millett, Benignus | Article in Journal | | 1969 |
| Catalogue of Irish material in vols. 140-3 of the Scritture originali riferite nelle congregazioni generali in Propaganda archives | | Article in Journal | | 1971 |
| Catalogue of Irish materials in vols 129-131 of the 'Scritture originali riferite nelle congregazioni generali' in Propaganda Archives | Millett, Benignus | Article in Journal | | 1968 |
| Catalogue of material of Irish interest in the collection Nunziatura di Fiandra, Vatican archives | Giblin, Cathaldus | Article in Journal | | 1972 |
| Catalogue of the papers of Dr Denis Conway (1722-96) in Limerick Diocesan Archives [with index] | Bracken, David | Article in Journal | | 2016 |
| Catalogue of the papers of Dr John Young, bishop of Limerick [1746-1813) held in the Limerick Diocesan Archives [with index] | Bracken, David | Article in Journal | | 2015 |
| Catalogue of volume 294 of the 'Scritture originali riferite nelle congregazioni generali' in propaganda archives | Millett, Benignus | Article in Journal | | 1965 |
| Catechist, linguist and Parisian churchman - the life of Rev Dr Andrew Donlevy LLD | Farry, Neal | Article in Journal | | 2015 |
| Cathedral of Christ the King, Mullingar : dedication souvenir | Anonymous | Monograph or Collective Volume | John P. Hayden | 1938 |
| Catherine McAuley (1778-1841) | Bergin, Moira | Article in Book | | 2012 |
| Catherine McAuley 1778-1978 : bi-centenary souvenir book | | Monograph or Collective Volume | Irish Messenger Publications | 1978 |
| Catherine McAuley : the first Sister of Mercy | Savage, R. B. | Monograph or Collective Volume | [s.n.] | 1955 |
| Catherine McAuley and the education of Irish Roman Catholic children in the mid-nineteenth century | Minns, Hilary | Article in Book | | 2000 |
| Catherine McAuley and the tradition of mercy | Sullivan, Mary C. | Monograph or Collective Volume | Four Courts | 1995 |
| Catherine McAuley venerable for mercy | Bolster, Angela | Monograph or Collective Volume | Dominican | 1990 |
| Catherine McAuley's theological and literary debt to Alonso Rodriguez : the 'spirit of the institute' parallels | Sullivan, Mary C. | Article in Journal | | 1990 |
| Catherine McAuley's theological and literary debt to Alonzo Rodriguez : the 'spirit of the institute' parallels | Sullivan, Mary C. | Article in Journal | | 1990 |
| Catholic 'Hessians'. 'At Tubberneering and Ballyellis, Full many a Hessian lay in his gore' | Dunne-Lynch, Nicholas | Article in Journal | | 2019 |
| Catholic action and the development of the Irish welfare state in the 1930s and 1940s | Kelly, Adrian | Article in Journal | | 1999 |
| Catholic Action as an organised campaign in Ireland, 1921-1947 | Curtis, Maurice | Thesis | | 2000 |
| Catholic ancestors in the British Isles and Catholic German influences | Hodson Pressinger, Selwyn | Article in Journal | | 2007 |
| Catholic ancestors of the Pressinger family. Part 2 | Hodson Pressinger, Selwyn | Article in Journal | | 2009 |
| Catholic and Protestant Dublin weavers before the Spanish Inquisition, 1745-54 | O'Connor, Thomas | Article in Book | | 2016 |
| Catholic and Protestant relations in Derry in the episcopacy of Charles O'Donnell 1798-1823 | Rafferty, Oliver P. | Article in Book | | 1999 |
| Catholic archives of the United States | O'Connor, Thomas F. | Article in Journal | | 1946 |
| Catholic Association papers in the Dublin Diocesan archives | O'Higgins, Fergus | Article in Journal | | 1984 |
| Catholic Belfast and Nationalist Ireland in the era of Joe Devlin, 1871-1934 | Hepburn, Anthony C. | Monograph or Collective Volume | Oxford University Press | 2008 |
| Catholic Boston : studies in religion and community, 1870-1970 | | Monograph or Collective Volume | # | 1985 |
| Catholic Boy Scouts of Ireland pilgrimage to Rome in the Holy Year 1934 | Mulloy, John | Article in Journal | | 2010 |
| Catholic chaplains on the Western Front, 1915-1919 : Lancashire's pivotal role | Bellis, Steve | Thesis | | |
| Catholic church music in Ireland, 1878-1903 : Lyra Ecclesiastica and the Cecilian movement | Daly, Kieran Anthony | Monograph or Collective Volume | Four Courts | 1995 |
| Catholic church music in Limerick, c.1860-1965 | Collins, Paul | Article in Book | | 2018 |
| Catholic church records | Ryan, James G. | Article in Book | | 1992 |
| Catholic churches of the nineteenth century : some newspaper sources | Coombes, James | Article in Journal | | 1975 |
| Catholic churchmen and the Celtic revival in Ireland, 1848-1916 | Collins, Kevin | Monograph or Collective Volume | Four Courts | 2002 |
| Catholic clergy and religious practice in Ennis 1651-1842 | Ó Dálaigh, Brian | Article in Journal | | 2002 |
| Catholic clergy of Tullaherin parish | Cassin, Mary | Article in Journal | | 1987 |
| Catholic colonization on the western frontier | Shannon, James P. | Monograph or Collective Volume | Yale University Press | 1957 |
| Catholic colonization on the western frontier | Shannon, James P. | Monograph or Collective Volume | Arno P. | 1976 |
| Catholic confederates and the constitutional relationship between Ireland and England, 1641-1649 | Ó Siochrú, Micheál | Article in Book | | 2005 |
| Catholic Devotion in Victorian Scotland | Aspinwall, Bernard | Article in Book | | 2008 |
| Catholic disaffection and the oath of allegiance of 1774 | Morley, Vincent | Article in Book | | 2009 |
| Catholic Dublin : the public expression in the age of Paul Cullen | Daly, Mary E. | Article in Book | | 2011 |
| Catholic education : its functions and scope | McQuaid, John Charles, bishop, 1895-1973 | Monograph or Collective Volume | [s.n.] | 1962 |
| Catholic Education in Britain and Ireland | Parker, Stephen G. | Article in Book | Oxford University Press | 2023 |
| Catholic education in Ireland 1669-1685 | Howard, Leonard | Article in Journal | | 1969 |
| Catholic education in the archdiocese of Cashel, 1780-1880 | Meagher, Mary T. | Thesis | | 1970 |
| Catholic education in Victorian Hull | McClelland, Marie | Article in Book | | 1999 |
| Catholic education: in the light of Vatican II and 'Laudato Si' | Lane, Dermot | Monograph or Collective Volume | Veritas Publications | 2016 |
| Catholic elites and the Irish university question, 1860-1880 : European solutions for an Irish dilemma | Enright, Aidan | Article in Book | | 2012 |
| Catholic emancipation | Rogers, Patrick | Article in Book | | 1949 |
| Catholic emancipation : documents | Doherty, Gillian M.,O'Riordan, Tomás | Article in Book | | 2011 |
| Catholic Emancipation Act of 1829 | Kerr, Donal A. | Article in Journal | | 1980 |
| Catholic faith of the Irish slums : London, 1840-70 | Gilley, Sheridan | Article in Book | | 1973 |
| Catholic families of the Pale | Kingston, John | Article in Journal | | 1960 |
| Catholic families weren't always bigger : religion, wealth, and fertility in rural Ulster before 1911 | Ó Gráda, Cormac | Monograph or Collective Volume | University College Dublin, Centre for Economic Research | 1984 |
| Catholic footsteps in old New York : a chronicle of Catholicity in the City of New York from 1524 to 1808 | Bennett, William Harper | Monograph or Collective Volume | Shwartz, Kirwin and Fauss | 1909 |
| Catholic girls will not be left behind : women’s higher education in Ireland 1879-1909 | Pašeta, Senia | Article in Book | | 1996 |
| Catholic Greenwich village : ethnic geography and religious identity in New York City, 1880-1930 | Shelley, Thomas | Article in Journal | | 2003 |
| Catholic grievances : comments | O'Hearn, Denis | Article in Journal | | 1987 |
| Catholic grievances and violence in Northern Ireland | Hewitt, Christopher | Article in Journal | | 1985 |
| Catholic grievances in Northern Ireland : appraisal and judgement | Kovalchek, Kassian A. | Article in Journal | | 1987 |
| Catholic grievances, Catholic nationalism : a comment | O'Hearn, Denis | Article in Journal | | 1983 |
| Catholic historiography in Australia | Inglis, Kenneth Stanley | Article in Journal | | 1958 |
| Catholic hopes and Protestant fears | McEvoy, James | Article in Journal | | 1983 |
| Catholic identity and the Revolt of the Netherlands, 1520-1635 | Pollmann, Judith | Monograph or Collective Volume | Oxford UP | 2011 |
| Catholic immigrants in America | Olson, J. S. | Monograph or Collective Volume | # | 1987 |
| Catholic influence and the secondary school curriculum in Ireland, 1922-1962 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1999 |
| Catholic influence on the health services, 1830-2000 | Barrington, Ruth | Article in Book | | 2003 |
| Catholic inheritance under the penal laws in Ireland | Fitzpatrick, Richard | Article in Journal | | 2020 |
| Catholic instruction in Ireland, 1720-1850 | Tynan, Michael | Monograph or Collective Volume | [s.n.] | 1985 |
| Catholic instruction in Ireland, 1720-1950 | Tynan, Michael | Monograph or Collective Volume | Four Courts | 1985 |
| Catholic intellectual culture in early modern Ireland | Cunningham, Bernadette | Article in Book | | 2014 |
| Catholic intellectual life in America : a historical study of persons and movements | Reher, M. M. | Monograph or Collective Volume | Macmillan | 1989 |
| Catholic Ireland | | Article in Book | | 2017 |
| Catholic Ireland and the Devotional Revolution | Roddy, Sarah | Article in Book | Oxford University Press | 2024 |
| Catholic Ireland in the Eighteenth Century. Collected Essays of Maureen Wall | Wall, Maureen (née Mac Geehin)
| Monograph or Collective Volume | Geography Publications | 1989 |
| Catholic Ireland, 1740-2016 | Barr, ColinÓ Corráin, Daithí | Article in Book | | 2016 |
| Catholic Ireland, 1864 | Corish, Patrick J. | Article in Journal | | 1964 |
| Catholic loyalty in mid-Victorian Ireland | Keogh, Richard A. | Thesis | | |
| Catholic loyalty to king and pope in 18th-century Ireland | Wall, Maureen (née Mac Geehin) | Article in Journal | | 1961 |
| Catholic marriage under the Penal Code | Corish, Patrick J. | Article in Book | | 1985 |
| Catholic Martyrdom in Early Modern Ireland | Tait, Clodagh | Article in Journal | | 2004 |
| Catholic missionaries and Liberia : a study of Christian enterprise in west Africa, 1842-1949 | Hogan, Edmund M. | Monograph or Collective Volume | Cork University Press | 1981 |
| Catholic missions in the West Indian colonies : John Grace, an Irish missionary of Propaganda Fide, 1666-1668 | Pizzorusso, Giovanni | Article in Journal | | 1985 |
| Catholic Nationalism in the Irish Revival : A Study of Canon Sheehan, 1852-1913 | Fleischmann, Ruth | Monograph or Collective Volume | Macmillan and St Martin's Press | 1997 |
| Catholic orphanages 1890s-1950s : two case studies, St Brigid's Ryne and St Michael's Baulkham Hills | McGrath, Madeleine Sophie | Article in Journal | | 1991 |
| Catholic Parish Registers | Fitzsimons, Fiona | Article in Journal | | 2015 |
| Catholic parish registers in Clogher diocese | Mulligan, Patrick | Article in Journal | | 1985 |
| Catholic parish registers of Dublin city and suburbs | McAuliffe, E. J. | Article in Journal | | 1977 |
| Catholic participation in the diplomacy of the Southern Confederacy | Stock, Leo Francis | Article in Journal | | 1930 |
| Catholic periodicals of the past, 1 : the Catholic Penny Magazine, 1834-1835 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 2 : the Catholic Book Society and the Irish Catholic Magazine | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 3 : Philip Barron's Ancient Ireland, 1835 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 4 : the Catholic Luminary, 1840-1841 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 5 : Duffy's Irish Catholic Magazine, 1847-1848 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 6 : Duffy's Irish Catholic Magazine, 1847-48, part 2 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 7 : the Catholic University Gazette, 1854-1856 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic politics in early nineteenth-century Ireland | Ó hÓgartaigh, Margaret | Article in Journal | | 2010 |
| Catholic politics in the penal era : Father Sylvester Lloyd and the Delvin Address of 1727 | McBride, Ian | Article in Book | | 2011 |
| Catholic power and the Irish city : modernity, religion, and planning in Galway, 1944–1949 | Butler, Richard J. | Article in Journal | | 2020 |
| Catholic praxis and the Northern Ireland conflict | Lennon, Brian | Article in Book | | 1994 |
| Catholic preaching in Ireland, 1760-1840 | Ryan, David | Article in Book | | 2004 |
| Catholic priests and political violence in Ireland, 1919-21 | Heffernan, Brian J. | Thesis | | 2011 |
| Catholic protectionism or Irish nationalism? : religion and politics in Liverpool, 1829-1845 | Dye, Ryan | Article in Journal | | 2001 |
| Catholic qualification rolls index : Fermanagh and Monaghan | | Article in Journal | | 1959 |
| Catholic realities and pastoral strategies : another look at the historiography of Scottish Catholicism, 1878-1920 | Aspinwall, Bernard | Article in Journal | | 2008 |
| Catholic reformation in Ireland : the mission of Rinuccini, 1645-49 | Ó hAnnracháin, Tadhg | Monograph or Collective Volume | Oxford University Press | 2002 |
| Catholic relief and the political awakening of Irish Catholics in Nova Scotia, 1780–1830 | Kehoe, S. Karly | Article in Journal | | 2018 |
| Catholic religious cultures in the diocese of Dublin, 1614-97 | Gillespie, Raymond, 1955-2024 | Article in Book | | 2000 |
| Catholic religious practices and payments in seventeenth-century Ireland | Gillespie, Raymond, 1955-2024 | Article in Journal | | 1993 |
| Catholic religious publishing, 1800-1891 | Begadon, Cormac | Article in Book | | 2011 |
| Catholic rent lists from the diocese of Kilmore | Cunningham, Terence | Article in Journal | | 1963 |
| Catholic reorganisation - Methodist organisation - A study in parallels | Cooney, Dudley A. Levistone | Article in Journal | | 2007 |
| Catholic responses to the Act of Union | Keogh, Dáire | Article in Book | | 2001 |
| Catholic revival in the North of Ireland, 1603-41 | Mac Cuarta, Brian | Monograph or Collective Volume | Four Courts | 2007 |
| Catholic schools : a survey of a Northern Ireland problem | Campbell, J. J. | Monograph or Collective Volume | Fallon | 1964 |
| Catholic schools and 'the system of national education' | Brenan, M. | Article in Journal | | 1947 |
| Catholic schools in Dublin in 1787-8 | Brady, John, d.1963 | Article in Journal | | 1955 |
| Catholic schools of old Dublin | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1951 |
| Catholic serials in the 19th century in the United States | Hatzfeld, HertaWillging, Eugene P. | Article in Journal | | 1957 |
| Catholic serials of the nineteenth century in South Carolina | Willging, Eugene P. | Article in Journal | | 1960 |
| Catholic sisterhoods and the immigrant church | Mageean, D. M. | Article in Book | | 1992 |
| Catholic social classes under the penal laws | Cullen, L. M. (Louis Michael) | Article in Book | | 1990 |
| Catholic society in New South Wales, 1788-1860 | Sutton, T. | Monograph or Collective Volume | [s.n.] | 1974 |
| Catholic stakhanovites? religion and the Irish Labour Party, 1922-73 | Puirséil, Niamh | Article in Book | | 2008 |
| Catholic survival in Protestant Ireland, 1660-1711 : Colonel John Browne, landownership and the Artices of Limerick | Kinsella, Eoin | Monograph or Collective Volume | Boydell | 2018 |
| Catholic terror in Ireland | Manhattan, Auro | Monograph or Collective Volume | Chick Publications | 1988 |
| Catholic Unionism, a case study : Sir Denis Stanislaus Henry (1864-1925) | Phoenix, Éamon | Article in Book | | 2013 |
| Catholic University | Tierney, Michael | Article in Book | | 1945 |
| Catholic University School and Newman's university, 1850-67 | Kerr, Donal A. | Article in Book | | 1967 |
| Catholic wealth in eighteenth-century Ireland | Wall, Maureen (née Mac Geehin) | Article in Journal | | 1957 |
| Catholic writing and the literary revival | Vance, Norman | Article in Book | | 2002 |
| Catholic Written Cultures | Monta, Susannah BrietzRyan, Salvador | Article in Book | | 2023 |
| Catholic-Christian identity and modern Irish poetry | O'Donoghue, Bernard | Article in Book | | 2013 |
| Catholic-nationalist attitudes to education in Northern Ireland, 1921-1947 | Farren, Seán | Article in Journal | | 1989 |
| Catholic-Protestant income differences in Northern Ireland | Borooah, V. K. | Article in Journal | | 1995 |
| Catholicising Fascism, Fascistising Catholicism? The Blueshirts and the Jesuits in 1930s Ireland | Cronin, Mike | Article in Journal | | 2007 |
| Catholicism and capitalist social order in Ireland, 1907-1973 : an historical institutionalist analysis | L'Estrange, Seán | Thesis | | |
| Catholicism and democratic political development in Ireland | Schmidt, David E. | Article in Journal | | 1974 |
| Catholicism and empire: Ireland and Lower Canada, 1760-1830 | Bric, Maurice J. | Article in Book | | 2016 |
| Catholicism and industrial society in Ireland | Fahey, Tony | Article in Book | | 1992 |
| Catholicism and industrial society in Ireland | Fahey, Tony | Article in Journal | | 1992 |
| Catholicism and national identity in the works of John McGahern | Maher, Eamon | Article in Book | | 2012 |
| Catholicism and nationalism : a historical reflection | Macaulay, Ambrose | Article in Book | | 2004 |
| Catholicism and nationalism in Ireland : from fusion in the 19th century to separation in the 21st century | White, Timothy J. | Article in Journal | | 2007 |
| Catholicism and Separatism, Conformity and the State | Questier, Michael | Article in Book | | 2023 |
| Catholicism and social discipline in pre-famine Ireland | Connolly, Sean J. | Thesis | | |
| Catholicism and the Irish confederate armies : for God and king? | Lenihan, Pádraig | Article in Journal | | 1994 |
| Catholicism and the Irish confederate armies : for God or king? | Lenihan, Pádraig, 1959- | Article in Journal | | 1994 |
| Catholicism and the New York Irish 1880-1910 | McLeod, Hugh | Article in Book | | 1987 |
| Catholicism in a Protestant kingdom : a study of the Irish 'ancien regime' | Leighton, C. D. A. | Monograph or Collective Volume | Macmillan | 1994 |
| Catholicism in county Fermanagh, 1795-1850 | Rafferty, Oliver P. | Article in Book | | 2004 |
| Catholicism in Early Modern Ireland and Britain | Ó hAnnracháin, Tadhg | Article in Journal | | 2005 |
| Catholicism in Ireland | Gilley, Sheridan | Article in Book | | 2003 |
| Catholicism in Ireland 1880–2015: rise, ascendancy and retreat | Ó Corráin, Daithí | Article in Book | | 2018 |
| Catholicism in Meath, c. 1622 | | Article in Journal | | 1972 |
| Catholicism in nineteenth-century Tyrone | Macaulay, Ambrose | Article in Book | | 2000 |
| Catholicism in Scotland to 1603 | Spurlock, R. Scott | Article in Book | | 2023 |
| Catholicism in the North of Ireland since 1891 | Rafferty, Oliver P. | Article in Book | | 1995 |
| Catholicism in Ulster, 1603-1983 : an interpretative history | Rafferty, Oliver P. | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| Catholicism in Ulster, 1800-50 | Connolly, Sean J. | Article in Book | | 1981 |
| Catholicism, Ireland and the Irish diaspora | Gilley, Sheridan | Article in Book | | 2005 |
| Catholicism, masculinity and middle-class respectability in the Irish Catholic temperance movement in nineteenth-century Canada | McLaughlin, Mike | Article in Book | | 2015 |
| Catholicism, nationalism and science | Jones, Greta | Article in Journal | | 1997 |
| Catholicism, politics and Irish America since 1890 : some critical considerations | Doyle, David Noel | Article in Book | | 1985 |
| Catholics and Catholicism in the eighteenth-century press | Brady, John, d.1963 | Monograph or Collective Volume | Catholic Record Society of Ireland | 1965 |
| Catholics and protestants in an eighteenth-century Limerick parish : Ardcanny, 1659-1798 | Fleming, David A. | Article in Book | Four Courts Press | 2024 |
| Catholics and socialists in Scotland, 1900-1930 | Gilley, Sheridan | Article in Book | | 1989 |
| Catholics and the American revolution : a study in religious climate | Metzger, C. H. | Monograph or Collective Volume | | 1962 |
| Catholics and the law in Restoration Ireland | Smith, Paul | Monograph or Collective Volume | Manchester University Press | 2025 |
| Catholics and the upper middle class : a comment on roof | Greeley, Andrew M. | Article in Journal | | 1981 |
| Catholics and trade in eighteenth-century Ireland : an old debate revisited | Dickson, David | Article in Book | | 1990 |
| Catholics and Trinity : a historical view | O'Connell, M. | Article in Journal | | 1966 |
| Catholics first and politicians afterwards : the Labour Party and the workers' republic, 1936-39 | McGarry, Fearghal | Article in Journal | | 2000 |
| Catholics in a Protestant country : the papist constituency in eighteenth-century Dublin | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Four Courts | 1998 |
| Catholics in Britain and Ireland, 1558-1829 | Mullett, Michael A. | Monograph or Collective Volume | Macmillan | 1998 |
| Catholics in colonial America | Ellis, J. T. | Monograph or Collective Volume | | 1965 |
| Catholics in Northern Ireland : political participation and cross-border relations, 1920-1932 | Biaggi, Cecilia | Thesis | | 2016 |
| Catholics in Northern Ireland, 1921-1969 | Elliott, Marianne | Article in Book | Oxford University Press | 2024 |
| Catholics in Northern Ireland, 1926-1939 | Kennedy, David | Article in Book | | 1967 |
| Catholics in South Carolina : a record | Madden, Richard C. | Monograph or Collective Volume | University Press of America | 1985 |
| Catholics in the movies | | Monograph or Collective Volume | Oxford UP | 2008 |
| Catholics in the north of Ireland 1850-1921 | Hepburn, Anthony C. | Article in Book | | 1978 |
| Catholics in the old South | Miller, Randall M. | Monograph or Collective Volume | [s.n.] | 1983 |
| Catholics of consequence : transnational education, social mobility and the Irish Catholic elite, 1850-1900 | Ó Neill, Ciarán | Monograph or Collective Volume | Oxford University Press | 2014 |
| Catholics under the penal laws | Cullen, L. M. (Louis Michael) | Article in Journal | | 1986 |
| Catholics writing the nation in early modern Britain and Ireland | Highley, Christopher | Monograph or Collective Volume | Oxford University Press | 2008 |
| Catholics, conscription and archbishop Mannix | McKernan, Michael | Article in Journal | | 1977 |
| Catholics, land and the popery acts of Anne | Osborough, W. N. (William Nial) | Article in Book | | 1990 |
| Catholics, politicisation and the 1798 rebellion | Whelan, Kevin | Article in Book | | 1991 |
| Catholics, science and civic culture in Victorian Belfast | Finnegan, Diarmid A.Wright, Jonathan Jeffrey | Article in Journal | | 2015 |
| Catholics, War and Britain's Armed Forces | Snape, Michael | Article in Book | Oxford University Press | 2023 |
| Ceisteanna na linne don Eaglais Chaitliceach in Éirinn | Ó Murchú, Helen | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2008 |
| Celibacy in the Catholic church : a brief history | O'Loughlin, Thomas | Article in Journal | | 1995 |
| Celtic and charity | O'Hagan, Frank | Article in Book | | 2004 |
| Celtic Football Club and the Irish in Scotland | Bradley, Joseph M. | Article in Book | | 2004 |
| Celtic minded 2 : essays on Celtic, football culture and idenity [sic] | | Monograph or Collective Volume | Argyll Publishing | 2006 |
| Celtic spirituality | | Monograph or Collective Volume | Paulist | 1999 |
| Censoring the spirit of Vatican II in Ireland : the Catholic archdiocese of Dublin and Reality magazine, 1965-71 | Murray, Peter | Article in Journal | | 2021 |
| Censorship in the two Irelands, 1921-69 | Martin, Peter | Thesis | | 2003 |
| Centenary celebrations : catalogue of the exhibition, Newman House, 19th -24th July 1954 | University College Dublin | Monograph or Collective Volume | University College | 1954 |
| Centenary of All Hallows College | O'Donnell, Thomas J. | Article in Journal | | 1942 |
| Centenary of the death of Edmund Ignatius Rice, founder of the Christian Brothers of Ireland | Anonymous | Monograph or Collective Volume | [s.n.] | 1944 |
| Centenary of the Passionists in Ireland, 1856-1956 | Anonymous | Monograph or Collective Volume | [s.n.] | 1956 |
| Centenary, 1870-1970 church of the Immaculate Conception and St Joseph, Crossgar | | Monograph or Collective Volume | Irish News | 1971 |
| Ceremonial culture in the Irish free state, 1922-1939 | Godson, Lisa | Thesis | | |
| Challenging times : The Irish-Catholic press in Dunedin and Adelaide, 1916-1919 | James, Stephanie | Article in Book | NA | 2020 |
| Challoner and St. Patrick's Day | Guazzelli, Victor | Article in Journal | | 1947 |
| Challoner's contemporaries in Ireland | Wall, Thomas | Article in Journal | | 1946 |
| Change and continuity in British anti-Catholicism, 1829-1982 | Wolffe, John | Article in Book | | 1996 |
| Change and continuity in Irish religion, 1974-1984 | Weafer, John | Article in Journal | | 1986 |
| Changing attitudes to the 1916 Rising | Shannon, James P. | Article in Journal | | 2017 |
| Changing Catholic culture in Ireland, 1950-1979 | Fuller, Louise | Thesis | | 1997 |
| Changing churches and liturgy | O'Byrne, Hugh | Article in Book | | 1999 |
| Chapel of Mary Immaculate Mother of God, St Colman's College, Newry | Campbell, E. | Monograph or Collective Volume | [s.n.] | 1943 |
| Chapel or church? The case of St Mary's, Pope's Quay, Cork | McParland, Edward | Article in Book | | 2012 |
| Chapel Royal, Dublin Castle | Derham, William
| Article in Journal | | 2017 |
| Chapels of Leighlinbridge, 1729 and 1788 | Nevin, Martin | Article in Journal | | 2008 |
| Chapels of Leighlinbridge, 1729 and 1788 | Nevin, Martin | Article in Journal | | 2008 |
| Chaplain extraordinary | Chadwick, Austin | Article in Journal | | 1971 |
| Chaplain in Spain, 1937 | Daly, Charles | Article in Journal | | 1988 |
| Charity and the Great Hunger in Ireland : the kindness of strangers | Kinealy, Christine | Monograph or Collective Volume | Bloomsbury | 2013 |
| Charity, church and the Society of St Vincent de Paul | Ní Chearbhaill, Máire | Article in Book | Columba | 2012 |
| Charles Bonaventure Maguire, O.F.M. (1768-1833) | Faulkner, Anselm | Article in Journal | | 1983 |
| Charles Carroll of Carrollton : painting the portrait of an Irish-American aristocrat | Cullen, Fintan | Article in Journal | | 2010 |
| Charles Eyne (1817-1902) | Lawlor, J. M. | Article in Journal | | 1984 |
| Charles MacNally, bishop of Clogher: Local and family background | Murphy, Owen | Article in Journal | | 2010 |
| Charles McNally, Maynooth professor and bishop of Clogher | Kerr, Donal A. | Article in Journal | | 1981 |
| Charles William Russell, D.D., president of Maynooth, 1857-80 | Macaulay, Ambrose | Article in Journal | | 1983 |
| Charleston's bishop John England and American slavery | Kelly, Joseph | Article in Journal | | 2001 |
| Charlotte Grace O'Brien and the Mission of Our Lady of the Rosary for the protection of Irish immigrant girls | Murphy, Maureen | Article in Journal | | 1992 |
| Charting the material culture of the 'Devotional Revolution': the Advertising Register of the 'Irish Catholic Directory', 1837-96 | Godson, Lisa | Article in Journal | | 2016 |
| Children of the dead end : the formation of the modern archdiocese of Glasgow, 1815-1914 | Aspinwall, Bernard | Article in Journal | | 1992 |
| Children’s burial grounds in Ireland (Cilliní) and parental emotions toward infant death | Murphy, Eileen M. | Article in Journal | | 2011 |
| Christ Church cathedral, Dublin : a short history | Lewis-Crosby, E. H. | Monograph or Collective Volume | | 1949 |
| Christian citizens : the Catholic church and radical politics 1790-1800 | Keogh, Dáire | Article in Book | | 1997 |
| Christian myths and legends | Evans, Vonnie Banville | Article in Book | | 1999 |
| Christianities in the early modern Celtic world | | Monograph or Collective Volume | Palgrave Macmillan | 2014 |
| Christians in Ulster 1968-1980 | Gallagher, EricWorrall, Stanley | Monograph or Collective Volume | Oxford University Press | 1982 |
| Christians, Catholics, Protestants : The Religious Links of Britain and Ireland with Continental Europe, c.1689-1800 | Conway, Stephen | Article in Journal | | 2009 |
| Christmas in Frenchpark long ago | Casey, Michael | Article in Journal | | 1998 |
| Chronicle : building the tower | Olden, Michael | Article in Journal | | 2003 |
| Chronicle : installation of the most Reverend Cahal Brendan Daly as archbishop of Armagh and primate of all Ireland | Anonymous | Article in Journal | | 1991 |
| Chronicle. Cardinal Cahal B. Daly. The Scholar-bishop (1917-2009) | McEvoy, James | Article in Journal | | 2010 |
| Chronology of events, 1641-9 | Anonymous | Article in Book | | 2001 |
| Chun Glóire Dé : an illustrated guide to Kilmallock Catholic Church, its history, contributors and clergy | | Monograph or Collective Volume | Kilmallock Historical Society | 2004 |
| Church and change : the Irish experience | Kung, Hans | Monograph or Collective Volume | Gill & Macmillan | 1986 |
| Church and class : Irish-Australian labour loyalties and the 1955 split | O'Connell, DeclanWarhurst, John | Article in Journal | | 1982 |
| Church and politics : the last twenty-five years | Ryan, Liam | Article in Journal | | 1979 |
| Church and religion in the Ulster crisis | Morrow, Duncan | Article in Book | | 1995 |
| Church and school in Northern Ireland : a Catholic view; a Protestant view; a politician's view | Farren, SeánMacaulay, AmbroseWorrall, Stanley | Article in Journal | | 1980 |
| Church and state - Irish style. Tradition and innovation | Donnelly, Peter | Article in Journal | | 1995 |
| Church and state : implications of change | Whyte, John | Article in Journal | | 1985 |
| Church and state : the wider issues | Comiskey, Brendan, Bishop of Ferns | Article in Journal | | 1985 |
| Church and state in Ireland (1922-2013) : contrasting perceptions of humanity | Maignant, Catherine | Article in Journal | | 2014 |
| Church and state in Ireland : perspectives of Vatican II | Hannon, Patrick | Article in Journal | | 2017 |
| Church and state in modern Ireland | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1969 |
| Church and state in modern Ireland | Keogh, Dermot | Article in Book | | 1991 |
| Church and state in modern Ireland : Mayo county librarian case, 1930-32 | Moran, Gerard | Article in Journal | | 1987 |
| Church and state in modern Ireland, 1923-1970 | Whyte, John | Monograph or Collective Volume | Gill & Macmillan | 1971 |
| Church and state in the Republic of Ireland | Whyte, John | Thesis | | |
| Church and State in Tudor Ireland. A history of penal laws against Irish catholics, 1534-1603. With a foreword by Professor Mary Hayden | Edwards, R. W. D. (Robert Walter Dudley) | Monograph or Collective Volume | | 1935 |
| Church archives in the United States and Canada : a bibliography | Binsfield, Edward L. | Article in Journal | | 1958 |
| Church building | Kennedy, T. P. | Article in Book | | 1968 |
| Church music and musicology in Ireland : an afterword | White, Harry | Article in Book | | 1993 |
| Church music reform | Delany, James | Article in Journal | | 1946 |
| Church of Assumption, Tullamore | Broderick, BrídByrne, Michael | Monograph or Collective Volume | Esker Press for Offaly Historical and Archaeological Society | 2006 |
| Church of Corpus Christi golden jubilee, 1941-1991 | Anonymous | Monograph or Collective Volume | [s.n.] | 1991 |
| Church of Ireland and Roman Catholic church registers in Belfast | Public Record Office of Northern Ireland | Article in Journal | | 1981 |
| Church of Our Lady of the Most Holy Rosary dedicated Sunday 4th October 1896 : centenary celebrations Sept 28th-Oct 7th 1996 | Troy, B. | Monograph or Collective Volume | The author | 1996 |
| Church of St John the Baptist, Blackrock 1845-1995 | O'Connell, Michael | Article in Journal | | 1995 |
| Church of St John, Newport 1795-1923 | | Monograph or Collective Volume | Newport Historical and Archaeological Society | 1996 |
| Church of St Peter and Paul Balbriggan, 1842-1992 | Walsh, Jim | Monograph or Collective Volume | Balbriggan Historical and Cultural Society | 1992 |
| Church of the Immaculate Conception, Knightstown, Valentia Island, Co. Kerry, 1915-2015 : 200 years anniversary | | Monograph or Collective Volume | Centenary Committee | 2016 |
| Church of the Immaculate Conception, Termonfeckin 1883-1983 | Morgan, Patrick | Monograph or Collective Volume | Drogheda Independent | 1983 |
| Church policy in the Diocese of Derry after the Reformation | Donnelly, Philip | Article in Journal | | 2007 |
| Church, state and education in early modern Ireland | Gillespie, Raymond, 1955-2024 | Article in Book | | 1992 |
| Church, state and family : the advent of child guidance clinics in Independent Ireland | Feeney, Tom | Article in Journal | | 2012 |
| Church, state and Irish Christianity | Ford, David | Article in Journal | | 1980 |
| Church, state and nation in Ireland, 1898-1921 | Miller, David William, 1940- | Monograph or Collective Volume | Gill & Macmillan | 1973 |
| Church, state and nation in modern Ireland | Larkin, Emmet | Article in Journal | | 1975 |
| Church, state and social science in Ireland : knowledge institutions and the rebalancing of power, 1937-73 | Feeney, MariaMurray, Peter | Monograph or Collective Volume | Manchester University Press | 2017 |
| Church, state and society | Keogh, Dermot | Article in Book | | 1988 |
| Church, state and society, 1950-70 | Whyte, John | Article in Book | | 1979 |
| Church, state and the control of schooling in Ireland, 1900-1944 | Titley, E. B. | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Church, state, and sexual crime against children in Ireland after 1922 | Keating, Anthony | Article in Journal | | 2004 |
| Church, state, and society in Ireland since 1960 | Girvin, Brian | Article in Journal | | 2008 |
| Church-state relations in an independent Ireland | McDonagh, Enda | Article in Book | | 2003 |
| Church/state relationships and Roman Catholic schools in Northern Ireland 1922-1996 | McCavera, Patrick | Thesis | | |
| Churches and monunments | Madden, Gerard | Article in Book | | 1993 |
| Churches and theology in a century of revolution and reaction | Pierce, Andrew | Article in Book | | 2006 |
| Churches of the diocese of Ferns : symbols of a living faith | Ferns Diocesan History and Archive Group | Monograph or Collective Volume | Booklink | 2004 |
| Churches of the diocese of Kilmore | Kelly, Liam | Monograph or Collective Volume | Booklink | 2005 |
| Churches, governments and the media : confronting their own and each other's responsibilities | Horgan, John, b. 1940 | Article in Book | | 2003 |
| Churches, society and conflict in Northern Ireland | Morrow, Duncan | Article in Book | | 1996 |
| Churches, states and violences : how the Roman Catholic and Presbyterian churches addressed the violence of Northern Ireland ‘Troubles’ 1968-1994 | Leonard, William Allan | Thesis | | |
| Churches, the State, and Politics, 1800-1922: An Overview | Brown, Stewart J. | Article in Book | Oxford University Press | 2024 |
| Churchill and the naval chaplains | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1965 |
| Cien años de acción católica en la Argentina (1831-1931) | Ussher, Santiago M. | Monograph or Collective Volume | [s.n.] | 1957 |
| Cillglas-Kilglas : the church by the stream : a history of the confiscation settlement and vesting of its lands | Carroll, P. J. | Monograph or Collective Volume | The author | 1996 |
| Cín lae Uí Mhealláin, friar O Meallan journal | Dillon, Charles | Article in Book | | 2000 |
| Circles of friends : a personal memoir | Brophy, P. J. | Monograph or Collective Volume | Carlovian Press | 1993 |
| Cistercians and Cistercian abbeys in sixteenth- and seventeenth-century Ireland | Hogan, Flannan, Rev. | Thesis | | 1972 |
| Cistercienses Irlandeses en Espana | Guerin Betts, Patrick | Article in Journal | | 1975 |
| Civic life and religion in early seventeenth-century Dublin | Lennon, Colm | Article in Journal | | 1983 |
| Civic privilege, state policy and the growth of recusancy: the patriciate of Dublin in the age of reformation, 1548-1613 | Lennon, Colm | Thesis | | 1987 |
| Civil Wars and Interregnum | Morrill, John | Article in Book | Oxford University Press | 2023 |
| Claiming the city : politics, faith, and the power of place in St. Paul | Wingerd, Mary Lethert | Monograph or Collective Volume | Cornell University Press | 2001 |
| Clais an Aifrinn | Carney, Áine | Article in Journal | | 2004 |
| Class and Catholic Irish Masculinity in Antebellum America : Young Men on the Make in Chicago | Kelleher, Patricia | Article in Journal | | 2009 |
| Class and ethnicity : Irish Catholics in England, 1880-1939 | Firedeng, Steven | Monograph or Collective Volume | [s.n.] | 1993 |
| Class and ethnicity : Irish Catholics in England, 1880-1939 | Fielding, Steven | Monograph or Collective Volume | Open University Press | 1993 |
| Class conflict and sectarianism in Belfast : from its origins to the 1930s | Munck, Ronnie | Article in Journal | | 1985 |
| Class, gender and religion : the Catholic church and the Irish poor in Victorian Liverpool | Kanya-Forstner, M. | Article in Book | | 1995 |
| Classifications of sacred space : a new understanding of Mass rock sites in Ireland | Bishop, Hilary, J. | Article in Journal | | 2016 |
| Clement Smyth (1810-1865) : a founder of New Melleray and Civil War bishop | Heffern, Colman | Article in Journal | | 1970 |
| Clement Smyth, Osco : Trappist monk and frontier prelate | Coogan, M. Jane | Article in Journal | | 1989 |
| Clement VIII and the counter-reformation in Ireland, 1592-1605 | Jones, Frederick M., Rev. | Thesis | | 1957 |
| Clergy lists of Elphin, 1731-1818 | | Article in Journal | | 1996 |
| Clergy of Clogher : biographical succession lists | Leslie, J. B. (James Blennerhassett) | Monograph or Collective Volume | Ulster Historical Foundation | 2006 |
| Clergy of Elphin diocese, 1810-1812 | | Article in Journal | | 1993 |
| Clerical Abuse | Daly, Marie E. : Pound, Marcus | Article in Book | Oxford University Press | 2023 |
| Clerical errors: Reading desire in nineteenth-century Irish painting | Nugent, Joseph | Article in Journal | | 2011 |
| Clerical income and its sources in the parish of Moycullen, in the wardenate of Galway, in pre-Famine Ireland, 1786-1823 | Hargett, CraigLarkin, Emmet | Article in Journal | | 2009 |
| Clerical indiscipline and ecclesiastical authority in Ireland 1690-1750 | O'Flaherty, Eamon | Article in Journal | | 1992 |
| Clerical indiscipline and ecclesiastical authority in Ireland, 1690-1750 | O'Flaherty, Eamon | Article in Journal | | 1992 |
| Clerical modernisers and the media in Ireland : the journalism of Fr Gerry Reynolds | Ganiel, Gladys | Article in Journal | | 2020 |
| Clerical recruitment, 1735-83 : documents from Windsor and Rome | | Article in Journal | | 1972 |
| Clerics of Derry | Anonymous | Article in Journal | | 1978 |
| Clerics, kings and Vikings : essays on medieval Ireland in honour of Donnchadh Ó Corráin | | Monograph or Collective Volume | Four Courts | 2015 |
| Clio is beautiful | Silke, John J. | Article in Journal | | 1979 |
| Cloak without dagger : Dr Thomas Hussey, 1746-1803 | Murphy, Martin | Article in Journal | | 1988 |
| Clódóireacht chaitliceach in Éirinn son ochtú haois déag | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| Clogher clerical students at the University of Leuven, 1548-1797 | Nilis, Jeroen | Article in Journal | | 2006 |
| Clogher diocesan archives | Forsythe, John | Article in Journal | | 1988 |
| Clogher diocesan papers, 2 | Forsythe, John | Article in Journal | | 1989 |
| Clogher record album : a diocesan history | | Monograph or Collective Volume | Cumann Seanchais Chlochair | 1975 |
| Clogherici : a dictionary of the Catholic clergy of the diocese of Clogher (1535-1835) | Ó Gallachair, Pádraig | Article in Journal | | 1986 |
| Clogherici : a dictionary of the Catholic clergy of the diocese of Clogher (1535-1835) | Ó Gallchobhair, Pádraig | Article in Journal | | 1955 |
| Clogherici : Clogher clergy (1535-1835) | Ó Gallachair, Pádraig | Article in Journal | | 1967 |
| Clongowes Wood : a history of Clongowes Wood College 1814-1989 | Costello, Peter | Monograph or Collective Volume | Gill & Macmillan | 1989 |
| Clonkyne Leix | Comerford, M., P.P. | Article in Journal | | 1883 |
| Close of Mission at Rathnure (From the 'Wexford People', 15 June 1867) | Anonymous | Article in Journal | | 2005 |
| Closer to Brussels than to Rome? The EU as the new external referent for a secularised Irish society and a redefined Catholic identity | Penet, Jean-Christophe | Article in Journal | | 2009 |
| Cnoc Mhuire in picture and story | Ua Cadhain, Liam | Monograph or Collective Volume | O'Gorman | 1945 |
| Co-operation, compromise and confrontation : the 'Universal News' 1860-69 | McNicholas, Anthony | Article in Journal | | 2007 |
| Cobbles and confetti. Public order policing in late Victorian Belfast | Radford, Mark | Article in Journal | | 2007 |
| Cogging Berkeley? : The Querist and the rhetoric of Fianna Fáil's economic policy | Murphy, William | Article in Journal | | 2005 |
| Colin Johnston Robb and the 'Irish Ecclesiastical Record' | Ní Chearbhaill, Máire
| Article in Journal | | 2021 |
| Colla Dubh Mac Mahon, his ancestors and descendants | Ó Mórdha, P. | Article in Journal | | 1974 |
| Collecting Ulster's culture : are there really two traditions? | Buckley, Anthony D. | Article in Book | | 1988 |
| Collections relating to the dioceses of Kildare and Leighlin. 3 vols. | | Monograph or Collective Volume | | 1883 |
| College communities abroad : Education, migration and Catholicism in early modern Europe | | Monograph or Collective Volume | Manchester University Press | 2017 |
| Collèges anglais, écossais, irlandais dans les Pays-Bas français (1568-1793) | Trenard, Louis | Article in Book | | 1974 |
| Collegium Hibernorum de urbe; The Irish College Rome, 1628-1678: an early manuscript account of the foundation and development of the Ludovisian College of the Irish in Rome | | Monograph or Collective Volume | Pontifical Irish College | 2003 |
| Collon's churches | Bellew, SéamusRoe, Séamus | Article in Journal | | 2015 |
| Colonel Edward Wogan | Murtagh, Diarmuid | Article in Journal | | 1954 |
| Colonial identity in early seventeenth-century Ireland | Clarke, Aidan | Article in Book | | 1978 |
| Colonized Catholics : perceptions of honour and history in Michael Kearney's reading of 'Foras Feasa ar Éirinn' | Cunningham, Bernadette | Article in Book | | 2003 |
| Columbanians across the Channel | Fox, Yaniv | Article in Book | | 2015 |
| Combating Dublin body-snatchers: the Drumcondra mortsafe | Mytum, Harold | Article in Journal | | 2013 |
| Comhairle Mhic Clamha ó Achadh na muileann | | Article in Journal | | 1965 |
| Comhluadar deighilte : coimhlint in Collège des Lombards, Paris (1707-1752) | O'Connor, Priscilla | Article in Book | | 1995 |
| Coming clean? remembering the Magdalen laundries | Pine, Emilie | Article in Book | | 2011 |
| Commentarius Rinuccinianus ....1645-1649, Vol. 6 | Kavanagh, Stanislaus,White, Newport B. | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1949 |
| Commentary, Fr. Nicholas Callan : scientist and theologian | Farrell, Dermot | Article in Journal | | 1998 |
| Commodius temples : Roman Catholic church building in nineteenth-century Dublin | Grimes, Brendan | Monograph or Collective Volume | Dublin City Public Libraries | 2010 |
| Communal identity in rural Northern Ireland | Loughrey, Patrick | Article in Journal | | 1986 |
| Communal solitude : the archaeology of the Carthusian houses of Great Britain and Ireland, 1178-1569 | Breeden, Francesca | Thesis | | |
| Community development and the Catholic Church | Joyce, DavidO'Connor, Raymond | Article in Book | | 2005 |
| Community in print: Irish-American publishers and readers | Sullivan, Eileen | Article in Journal | | 2011 |
| Community relations and the religious geography 1800-86 | Heatley, Fred | Article in Book | | 1983 |
| Comparing Post-World War II Catholicism in Quebec, Ireland and the USA | Baum, Gregory | Article in Book | | 2007 |
| Comparing Scotland and Northern Ireland | Bruce, Steve | Article in Book | | 2000 |
| Competing for the soul of Irish America : the Catholic Church and the Fenian Brotherhood of New York City | Lynch, Timothy G. | Article in Journal | | 2004 |
| Competitive religious cultures in nineteenth-century Belfast | Hempton, David | Article in Journal | | 1990 |
| Complete summary listing of journal holdings Dublin Diocesan Library | Catholic Church (Ireland) Archdiocese of Dublin Library | Monograph or Collective Volume | Dublin Diocesan Library | 1991 |
| Compulsory Irish in France | Walsh, T. J. | Article in Journal | | 1953 |
| Conceptualizing and responding to poverty in the Republic of Ireland in the 1960s : a case study of Dublin | Holohan, Carole | Article in Journal | | 2016 |
| Conciliation, anti-Orange politics and the sectarian scare: Dublin politics in the early 1820s | Katsuta, Shunsuke | Article in Journal | | 2011 |
| Concluding reflection : confronting the violence of the Irish reformations | Morrill, John Stephen, 1946- | Article in Book | | 2005 |
| Confederate banners | Sparks, M. | Article in Journal | | 1951 |
| Confederate Catholics and covenanters, 1644-6 | Lenihan, Pádraig, 1959- | Article in Book | | 2009 |
| Confederate Catholics at War, 1641-49 | Lenihan, Pádraig | Monograph or Collective Volume | Cork University Press | 2001 |
| Confessing Ireland : Gerald Griffin and the secret of emancipation | Murphy, Willa | Article in Journal | | 2013 |
| Confessional to-ing and fro-ing in the eighteenth-century diaspora : Helena Barry's story (1738) | O'Connor, Thomas | Article in Book | | 2015 |
| Confessionalisation in Ireland : periodisation and character, 1534-1649 | Lotz-Heumann, Ute | Article in Book | | 2005 |
| Confessionalization and clan cohesion : Ireland's contribution to Scottish Catholic renewal in the seventeenth century | Spurlock, Scott R. | Article in Journal | | 2012 |
| Confessionalization and clan cohesion : Ireland's contribution to Scottish Catholic renewal in the seventeenth century | Spurlock, R. Scott | Article in Book | | 2016 |
| Confidantes or competitors? Women, priests and conflict in post-Famine Ireland | Delay, Cara | Article in Journal | | 2005 |
| Conflict and change : the Irish of Kildare 1000-1269 | O'Byrne, Emmett | Article in Book | | 2006 |
| Conflict and Christianity in Northern Ireland | Mawhinney, Brian | Monograph or Collective Volume | Eerdmans | 1975 |
| Conflict, controversy and co-operation : the Irish council of churches and the troubles, 1968-1972 | Taggart, Norman W. | Monograph or Collective Volume | Columba | 2004 |
| Conflicting Loyalties, Conflicted Rebels : Political and Religious Allegiance among the Confederate Catholics of Ireland | Ó hAnnracháin, Tadhg | Article in Journal | | 2004 |
| Conformity and radicalism within the Catholic church : the case of the Northern Ireland crisis | McElroy, Gerald | Article in Book | | 1991 |
| Confounding the Garibaldian liars : the letters of Albert Delahoyde, Irish soldier of the Papal Battalion of St Patrick and Papal Zouave in Italy, 1860-1870. | O’Driscoll, Florry | Article in Journal | | 2016 |
| Confraternities and sodalities in Ireland: charity, devotion and sociability | | Monograph or Collective Volume | Columba Press | 2012 |
| Confraternities and the renewal of Catholic Dublin, c. 1750 - c. 1830 | Begadon, Cormac | Article in Book | Columba | 2012 |
| Confraternities in Ireland : a long view | Lennon, Colm | Article in Book | Columba | 2012 |
| Confraternities, their decline and the problem of sources : background, analysis and review | Fuller, Louise | Article in Book | Columba | 2012 |
| Confrontation in Derrytrasna | MacAtasney, Gerard | Article in Journal | | 1996 |
| Confronting "the social question" : American catholic thought and the socio-economic order in the nineteenth century | Curran, Robert Emmet | Article in Journal | | 1986 |
| Confronting modernity : Pope Leo XIII, Rerum novarum, and the Catholic Church in Ireland and Poland, 1878-1914 | Luminiello, Rose | Thesis | | |
| Confusion abounding : Bernard O'Higgins, O.S.A., bishop of Elphin, 1542-1561 | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1979 |
| Conor O'Mahony and his arguments for Irish Independence | Minihane, John | Article in Journal | | 2010 |
| Conscience and commerce in Georgian Waterford | Walton, Julian | Article in Journal | | 2011 |
| Conscription : resolutions of the Irish hierarchy | Anonymous | Article in Journal | | 1942 |
| Consecration of Abp. Carpenter - 1770 June 3 | Curran, M. J. | Article in Journal | | 1955 |
| Constitutional nationalism in Northern Ireland | Girvin, Brian | Article in Book | | 1994 |
| Constructing the repeal spectacle : monster meetings and people power in pre-famine Ireland | Owens, Gary | Article in Book | | 1993 |
| Contemporary Catholic and Protestant Irish America : social identities, forgiveness, and attitudes towards 'The Troubles' | Roe, Michael | Article in Journal | | 2002 |
| Contemporary Ireland and the religious question : a Catholic view | O'Riordan, Michael | Article in Book | | 1912 |
| Contemporary Ireland and the religious question, 2 : a Church of Ireland view | Moore, CourtenayMorgan, J. H. | Article in Book | | 1912 |
| Contentious Christians : Protestant-Catholic Conflict since the Reformation | Wolffe, John | Article in Book | | 2004 |
| Contested Terrains : Ethnic and Gendered Spaces in the Harbour Grace Affray | Keough, Willeen | Article in Journal | | 2009 |
| Contesting hegemony : the historical geography of the Protestant and Roman Catholic communities of South Tipperary, c.1570-1841 | Butler, David J., 1976- | Thesis | | 2003 |
| Context and meaning : Roman Catholic devotion to the Blessed Sacrament in nineteenth century America | Taves, Ann | Article in Journal | | 1985 |
| Continental opinion | Hennig, John | Article in Book | | 1949 |
| Contribution to a history of the Basilica of Saint Clement in Rome | Kane, Eileen | Article in Journal | | 1984 |
| Convent of Mercy, Longford : answering the call | Gilmurray, Immaculata | Article in Journal | | 2011 |
| Convent schools | C., K. | Article in Journal | | 1996 |
| Convent schools and national education in nineteenth-century Ireland, negotiating a place within a non-denominational system | Nowlan-Roebuck, CatherineRaftery, Deirdre | Article in Journal | | 2007 |
| Conversion and family identity in eighteenth-century Europe : the Dillons of Costello-Gallen | Ó Conaill, Colm James | Article in Book | | 2005 |
| Conversion by coercion? The Reformation in Ireland | Jefferies, Henry A. | Article in Journal | | 2018 |
| Convert rolls 1703-1849 and Catholic qualification rolls 1774-1845 | Fitzsimons, Fiona
| Article in Journal | | 2016 |
| Converts | Power, Thomas P. | Article in Book | | 1990 |
| Cops, priests and the decline of Irish America : True confessions (1981) | Meagher, Timothy J. | Article in Book | | 2008 |
| Cork : a diocesan history | Bolster, Angela | Article in Journal | | 1973 |
| Cork imprints of Catholic historical interest 1723-1804 : a provisional check-list | Fenning, Hugh | Article in Journal | | 1995 |
| Cork imprints of Catholic historical interest 1805-1830 : a provisional check list, part 2 | Fenning, Hugh | Article in Journal | | 1996 |
| Cork mission to Peru 1965 to 2015, Golden Jubilee reflection: Archdeacon Duggan and Kerry's significant role | Ó Luanaigh, Tomás | Article in Journal | | 2015 |
| Cork-related letters patent of 1658 | Long, Patrick | Article in Journal | | 1997 |
| Cornelius Denvir and the "Spirit of Fear" | Silke, John J. | Article in Journal | | 1987 |
| Correspondance romaine de l'anti-janséniste Francoise Porter | Ceyssens, Lucien | Article in Journal | | 1964 |
| Correspondence between Bishop O'Dwyer and Bishop Foley on the Dublin Rising, 1916-17 | O'Callaghan, Edward P. | Article in Journal | | 1978 |
| Correspondence from Jean-Baptiste Devenet and Claude Prost, book merchants of Lyon, to Fr Luke Wadding OFM, 1647-1654 | Hazard, Benjamin | Article in Journal | | 2011 |
| Correspondence of Abp Carpenter, with BP Sweetman of Ferns | Curran, Michael | Article in Journal | | 1956 |
| Correspondence of Daniel O'Connell, the Liberator. Edited with notices of his life and times | | Monograph or Collective Volume | John Murray | 1888 |
| Correspondence of David Rothe and James Ussher 1619-23 | O'Sullivan, William, 1921-2000 | Article in Journal | | 1994 |
| Correspondence of Fr. Ludovico Mansoni, S. J., papal nuncio to Ireland | | Article in Journal | | 1953 |
| Correspondence of Irish interest in the Lettere in Propaganda archives : vols 27-34 (1649-64) | | Article in Journal | | 1988 |
| Correspondence of Irish interest in the Lettere in Propaganda Archives : vols. 27-34 (1649-64) | Millett, Benignus | Article in Journal | | 1988 |
| Correspondence of Irish interest in the Lettere in Propaganda Archives, vol. 38 (1657-1664) | | Article in Journal | | 1990 |
| Correspondence of the lexicographer Thomas Connelly OP (1783-93) in the Archivio General de Simancas | Bergman, Ted | Article in Journal | | 2010 |
| Correspondence of the superiors of the Jesuit mission in Ireland with John O'Brien, S.J., rector of Salamanca | | Article in Journal | | 1965 |
| Correspondence: the Judge family | Judge, Kezia Sarah | Article in Journal | | 1989 |
| Correspondencia entre la Nunciatura en Espana y la Santa Sede, reinado de Felipe III (1598-1621). Vols 5-6 | | Monograph or Collective Volume | Iglesia Nacional Española | 1966 |
| Counsellor Terence MacDonagh : a great Catholic lawyer of the penal days | MacDonagh, J. C. T. | Article in Journal | | 1947 |
| Counter reformation: the Catholic Church, 1550–1641 | Ó hAnnracháin, Tadhg | Article in Book | | 2018 |
| Counter-reformation problems : Munster | Olden, Michael | Article in Journal | | 1965 |
| County Carlow schools in 1824 | O'Neill, Pat | Article in Journal | | 2007 |
| County Donegal in the Catholic Qualification Rolls, 1778-1790 | Ó Domhnaill, Seán | Article in Journal | | 1949 |
| County Kilkenny priests in Newfoundland | Whelan, Kevin | Article in Journal | | 1986 |
| County Monaghan before the emigration to Prince Edward Island | O'Grady, Brendan | Article in Book | | 1992 |
| County Monaghan immigrants in the Consett area of County Durham, England, 1842-1855 | Duffy, Godfrey F. | Article in Journal | | 1997 |
| County Wexford and Savannah, Georgia, 1848-1860 : a compilation of records and articles of County Wexford emigrants to Savannah | Kehoe, Lory | Monograph or Collective Volume | The author | 2013? |
| County Wexford priests in Newfoundland | Whelan, Kevin | Article in Journal | | 1985 |
| Creating an Irish identity: print, culture, and the Irish Franciscans of Louvain | Caball, Marc | Article in Book | | 2018 |
| Creideamh agus athartha : idéeoloaíocht pholaitíochta agus aos léinn na Gaeilge i dthús an seachtú haois déag | Mac Craith, Mícheál | Article in Book | | 1996 |
| Crisis of Faith or Collapse of Empire | Taylor, Lawrence J. | Article in Book | | 2007 |
| Critical voices in Irish Catholicism: reading the signs of the times | Fuller, Louise | Article in Journal | | 2011 |
| Criticising the godly prince : Malcolm Hamilton's 'Passages and Consultations' | Ford, Alan, 1956- | Article in Book | | 2003 |
| Croagh Patrick (Cruach Phádraig - the Reek) : an ancient mountain pilgrimage | Hughes, Harold | Monograph or Collective Volume | Harry Hughes | 1991 |
| Croke of Cashel : the life of Archbishop Thomas William Croke, 1823-1902 | Tierney, Mark | Monograph or Collective Volume | Gill & Macmillan | 1976 |
| Cromwell's siege of Waterford, 1649 | Simms, J. G. (John Gerald) | Article in Journal | | 1960 |
| Croppies, Celts and Catholics : the Irish in Australia | McConville, Chris | Monograph or Collective Volume | Edward Arnold | 1987 |
| Crucifixion stone from Summerhill, Co. Meath | Prendergast, Ellen | Article in Book | | 1998 |
| Cuairt an Ard-easbaig Cróc ar Thír Chonaill (1891) | Ó Baoighill, Pádraig | Article in Journal | | 2006 |
| Cúig teagaisg chríostaidhe de'n seachtmadh aois déag : compráid | Ó Fachtna, Anselm | Article in Book | NA | 1944 |
| Cuimhní cinn : na Bráithre Críostaí agus an Daingean | Firtéar, Pádraig | Article in Book | | 1996 |
| Cultúr agus creideamh sa 17ú hAois | Ó Doibhlín, Breandán | Article in Book | | 2008 |
| Cultural traditions in Northern Ireland | | Monograph or Collective Volume | [s.n.] | 1989 |
| Cultural traditions in Northern Ireland : inaugural lecture by Roy F. Foster; varieties of Irishness and proceedings of the Cultural Traditions Group conference, 3-4 March 1989 | Crozier, MaurnaFoster, R. F. (Robert Fitzroy) (Roy), 1949- | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1989 |
| Culture and diplomacy. The Spanish Hapsburg dimension in the Irish Counter Reformation movement, c.1529-c.1629 | Downey, Declan M. | Thesis | | 1994 |
| Culture and religion, 1815-70 | Hill, Myrtle | Article in Book | | 2011 |
| Culture, conflict and labour migration : Victorian Cumbria's Ulster connection | MacRiald, Donald M. | Article in Journal | | 1996 |
| Culture, identity and tradition : changing definitions of Irishness | Connolly, Sean J. | Article in Book | | 1997 |
| Culture, religion and violence in Northern Ireland | Murray, Dominic | Article in Book | | 1995 |
| Da Cunha's account of the condition of Catholics in the British Isles in 1710 | Da Cunha, LuisSachse, William Lewis | Article in Journal | | 1963 |
| Daily life at the Irish College in Nantes (1775-1785) | Noël, Jean C. | Article in Journal | | 1982 |
| Dán ar Phádraig Mac Síomóin | Ó Fiaich, Tomás | Article in Journal | | 1960 |
| Dán molta don Athair Uilliam Ó Fearaíola (1809-1878 | Ó hÓgáin, Éamonn | Article in Journal | | 2015 |
| Dancing on the hobs of hell : rural communities in Clare and the Dance Halls Act of 1935 | Ó hAllmhuráin, Gearóid | Article in Journal | | 2005 |
| Danial O'Connell oratore | Spina, Giorgio | Article in Book | | 1990 |
| Daniel Delany, bishop of Kildare and Leighlin (1787-1814) and the commencement of the veto controversy in Ireland | Power, Ann | Article in Journal | | 2011 |
| Daniel Mannix and Ireland | Kiernan, Colm | Monograph or Collective Volume | Alella Books|Gill & Macmillan | 1983 |
| Daniel Mannix and Ireland | Kieran, Colm | Monograph or Collective Volume | [s.n.] | 1985 |
| Daniel Mannix, Archbishop of Melbourne | Murphy, Frank P. | Monograph or Collective Volume | Advocate Press | 1948 |
| Daniel Mannix, Ireland and Australia | Kiernan, Colm | Article in Book | | 1984 |
| Daniel Mannix, priest and patriot | Gilchrist, Michael | Monograph or Collective Volume | [s.n.] | 1982 |
| Daniel Murray, 1768-1852 | Flannery, Maeve | Article in Journal | | 2008 |
| Daniel Murray, archbishop of Dublin, 1823-1852 | Lysaght, Moira | Article in Journal | | 1974 |
| Daniel Murray, archbishop of Dublin, 1823-1852 | Murray, P. J. | Article in Journal | | 1985 |
| Daniel O'Connell | O'Ferrall, Fergus | Monograph or Collective Volume | Gill & Macmillan | 1981 |
| Daniel O'Connell | McMahon, Sean | Monograph or Collective Volume | Mercier Press | 2000 |
| Daniel O'Connell and Alfred Elmore's 'Martyrdom of Thomas à Becket | de Bhailís, Caoimhín | Article in Journal | | 2018 |
| Daniel O'Connell and Henry Cooke : the conflict of civil and religious liberty in modern Ireland | O'Ferrall, Fergus | Article in Journal | | 1986 |
| Daniel O'Connell and the Bible War | Monaghan, Evie | Article in Book | | 2013 |
| Daniel O'Connell and the Repeal year | McCaffrey, Lawrence J., 1925- | Monograph or Collective Volume | University of Kentucky Press | 1966 |
| Daniel O'Connell's lord mayoralty, 1841-42 | Fitzpatrick, Áine | Article in Journal | | 1991 |
| Daniel O'Connell's Roman bequest | Ó Fearghail, Fearghus | Article in Book | | 2008 |
| Daniel O'Connell, 1775-1847 : an ideal patriot in any age | Gavin, Tadhg | Article in Journal | | 1976 |
| Daniel O'Connell, democrat, liberal Catholic and husband | O'Connell, Maurice R. | Article in Journal | | 1993 |
| Daniel O'Connell, the 'Liberator', 1775-1847 : changing images | O'Ferrall, Fergus | Article in Journal | | 1994 |
| Dark spots in Irish society : unmarried motherhood, crime and prosecution in Ireland, 1900-1950 | Rattigan, Cliona | Thesis | | 2008 |
| Dark walled up with stone : contrasting images of Irish Catholicism | Kenny, Colum | Article in Journal | | 2014 |
| David Moriarty (1814-77) : 1, the making of a bishop | O'Shea, Kieran | Article in Journal | | 1972 |
| David Moriarty (1814-77) : 4, ecclesiastical affairs | O'Shea, Kieran | Article in Journal | | 1973 |
| David Rothe | Hegarty, Maureen | Article in Journal | | 1979 |
| David Rothe, bishop of Ossory (c.1573-1650): bishop and historian | O'Connor, Thomas | Article in Journal | | 2009 |
| David Rothe, bishop of Ossory 1618-50 | Corish, Patrick J. | Article in Journal | | 1984 |
| De praesulibus Hiberniae potissimis Catholicae religionis in Hibernia serendae, propagandae, et conservandae authoribus, 1 : Provinces of Armagh and Dublin; 2 : Provinces of Cashel and Tuam. 2 vols. | Lynch, John, d. in or after 1677 | Monograph or Collective Volume | The Stationery Office | 1944 |
| De rebus in Hibernia gestis | Stanihurst, Richard | Monograph or Collective Volume | | 1584 |
| De Valera and Archbishop Daniel Mannix | Broderick, Joe | Article in Journal | | 1994 |
| De Valera, the Catholic church and the 'red scare' 1931-1932 | Keogh, Dermot | Article in Book | | 1983 |
| Dean Terence O'Shaughnessy | Murphy, IgnatiusTierney, Mark | Article in Journal | | 1989 |
| Dean Walter Meyler and the Andrean Schools, Cumberland Street, Westland Row 1847-1864 | Roantree, Gail C. | Article in Journal | | 202 |
| Dear God : the price of religion in Ireland | McCann, Eamon | Monograph or Collective Volume | Bookmarks | 1999 |
| Death comes to the archbishop | Dempsey, Anthony | Article in Journal | | 1939 |
| Death in the garden: Patrick Byrne's mortuary chapel at Goldenbridge Cemetery, Dublin | Hurley, Livia | Article in Journal | | 2016 |
| Death notices and obituaries in provincial Irish newspapers, 1820-1900 | Breathnach, CiaraButler, David | Article in Book | | 2013 |
| Death of a Tipperary Blueshirt | Grace, Daniel | Article in Journal | | 2014 |
| Declaration of Emperor Joseph II on the Irish and English Franciscans and Dominicans in the Low Countries, 1782 | Conlan, Patrick, 1940- | Article in Journal | | 1993 |
| Deconstructing diasporas : networks and identities among the Irish in Buffalo and Toronto, 1870–1910 | Jenkins, William | Article in Journal | | 2005 |
| Deconstructing the sectarian epic : The Northern Ireland civil rights movement and the world beyond Irish shores, 1963-1969 | Gagné, Michel Jacques | Article in Journal | | 2007 |
| Defence Forces Chaplains and the United Nations Mission to the Congo, 1960-1964 | Hartigan, Maurice | Article in Journal | | 2021 |
| Defenderism in Leitrim during the 1790s | Kelly, Liam | Article in Journal | | 1986 |
| Defining womanhood : Irish women and the Catholic church in Victorian Liverpool | Kanya-Forstner, M. | Article in Journal | | 1999 |
| Defining womanhood : Irish women and the Catholic church in Victorian Liverpool | Kanya-Forstner, M. | Article in Book | | 2000 |
| Defining womanhood : Irish women and the Catholic church in Victorian Liverpool | Kanya-Forstner, Martha | Article in Journal | | 1999 |
| Delinquency among Irish Catholic children in Victorian London | Feheney, John P. M. | Article in Journal | | 1983 |
| Denis Harty : vicar apostolic of Killaloe, 1657-1667 | Murphy, Ignatius | Article in Journal | | 1989 |
| Denis Henry : "An Irish Catholic Unionist" | McDonnell, A. D. | Article in Book | | 1995 |
| Denis Maguire OFM, Bishop of Kilmore 1770-98 | Duffy, Francis | Article in Journal | | 1997 |
| Denunciation of Antonio de Patricio [Anthony Fitzpatrick], O.P., to the Lisbon Inquisition (1699) | O’Connor, Thomas
| Article in Journal | | 2022 |
| Der Katholizismus in Schottland 1560-2005 | Halloran, Brian M. | Article in Book | | 2005 |
| Dermot O'Hurley's last visit to Tipperary | Hayes, William | Article in Journal | | 1992 |
| Derry : an outline history of the diocese | Bonner, Brian | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1982 |
| Derry and the Boyne : a contemporary Catholic account of the siege of Derry, the battle of the Boyne, and the general condition of Ireland in the Jacobite war | Plunket, Nicholas | Monograph or Collective Volume | Belfast Historical and Educational Society | 1990 |
| Derry city : memory and political struggle in Northern Ireland | Shea, Margo | Monograph or Collective Volume | University of Notre Dame Press | 2020 |
| Derry Diocesan Archive | Daly, Edward | Article in Journal | | 2005 |
| Derry's backyard : the barony of Inishowen 1650-1800 | Dickson, David | Article in Book | | 1995 |
| Desegregating the national schools : Archbishop Murray (1823-1852) as a pioneer of church-state cooperation | Griffin, Seán | Article in Journal | | 1994 |
| Desire, sex, gender and anxiety - Irish 'virgin' worship : from psychological origins to cultural dynamics | Tipper, Christopher | Article in Journal | | 2005 |
| Destabilizing Ulster, 1641-1642 | Gillespie, Raymond, 1955-2024 | Article in Book | | 1993 |
| Dev and his alma mater : Eamon de Valera's lifelong association with Blackrock College 1898-1975 | Farragher, Sean P. | Monograph or Collective Volume | Paraclete | 1984 |
| Devenish d'Athlone: an extraordinary soldier of fortune | Moran, Alan | Article in Journal | | 2020 |
| Devoted to archaeology : Professor (Canon) Patrick Power (1862-1951) | Twohig, Elizabeth Shee | Article in Journal | | 2013 |
| Devotional writings of the Irish Franciscans 1224-1950 | Mooney, Canice | Monograph or Collective Volume | Four Masters | 1952 |
| Dialogue of life and faith : the Irish Columban contribution to Christian-Muslim relations in the Philippines | Collins, Neil | Article in Book | | 2015 |
| Diasporic legacies : place, politics, and music among the Ottawa Valley Irish | Trew, Johanne Devlin | Article in Book | | 2003 |
| Dictionary of the American hierarchy (1789-1964) | Code, J. B. | Monograph or Collective Volume | Wagner | 1964 |
| Did Protestantism fail in early eighteenth-century Ireland? Charity schools and the enterprise of religious and social reformation, c.1690-1730 | Hayton, D. W. (David William) | Article in Book | | 1995 |
| Die doppelte Konfessionalisierung in Irland : Konflikt und Koexistenz im 16. und in der ersten Hälfte des 17. Jahrhunderts | Lotz-Heumann, Ute | Monograph or Collective Volume | Mohr Siebeck | 2000 |
| Die Entwicklung der politischen Parteien in Irland : nationalizmus, katholizumus und agrarischer konservatismus als determinanten der Irischen politik von 1823 bis 1977 | Murphy, Detlef | Monograph or Collective Volume | Leske und Budrich | 1982 |
| Die Katholikenemanzipation in Grossbritannien und Irland. Ein Beitrag zur Geschichte religiöser Toleranz | Blötzer, Joseph | Monograph or Collective Volume | | 1905 |
| Difficulties on all sides : the Irish Columban missionary who met Mao Tse-tung | Collins, Neil | Article in Book | | 2015 |
| Diocesan clerical life in Florida | McNally, Michael J. | Article in Journal | | 1995 |
| Diocese of Killaloe. Vol. 3 : 1851-1904 | Murphy, Ignatius | Monograph or Collective Volume | Four Courts | 1995 |
| Diocese of Kilmore (1678-1728) | MacKiernan, Francis J. | Article in Journal | | 2002 |
| Diocese of Kilmore : it's [sic] bishops and priests, 1136-1988 | MacKiernan, Francis J. | Monograph or Collective Volume | Breifne Historical Society | 1989 |
| Diolaim beag cuinahne ar an Chairdinéal Ó Fiaich agus and Réalt | Ní Thuama, Máire | Article in Journal | | 1992 |
| Diplomatic preparations for Kinsale | O'Connor, Thomas | Article in Book | | 2002 |
| Directory of the Catholic clergy of the diocese of Cloyne & Ross, 1836-1893 : including available obituary lists | | Monograph or Collective Volume | B. Troy | 1994 |
| Discerning the spirits. the Irish Jesuits and political violence, 1919-21 | Heffernan, Brian | Article in Journal | | 2014/2015 |
| Discipline, sentiment and the Irish-American public : Mary-Ann Sadlier's popular fiction | Howes, Marjorie | Article in Journal | | 2005 |
| Discourses of nation among migrants from Northern Ireland : Irishness, Britishness and the spaces in-between | Ní Laoire, Caitríona | Article in Journal | | 2002 |
| Discoverers and discoveries : the Penal Laws and Dublin property | O'Neill, Thomas Patrick | Article in Journal | | 1983 |
| Discovering Irish nuns in the nineteenth-century United States : the case of Chicago | Hoy, Suellen | Article in Book | | 2005 |
| Discovering migration in the seventeenth century : Propaganda Fide, the Holy Office, and foreigners | Sanfilippo, Matteo | Article in Book | NA | 2020 |
| Discrimination in Northern Ireland : a rejoinder | Hewitt, Christopher | Article in Journal | | 1983 |
| Display, sacramentalism and devotion : the medals of the archconfraternity of the Holy Family, 1922-39 | Godson, Lisa | Article in Book | Columba | 2012 |
| Disputes in the Irish college, Douai (1594–1614) | O'Connor, Thomas | Article in Journal | | 2019 |
| Disrupted and disruptive : continental influence on the Confederate Catholics of Ireland | Ó hAnnracháin, Tadhg | Article in Book | | 2002 |
| Dissonant voices : faith and the Irish diaspora | | Monograph or Collective Volume | Institute for Theological Partnerships Publishing | 2015 |
| Distinguishing Catholics and Protestants among Irish Immigrants to Clydeside : A New Approach to Immigration and Ethnicity in Victorian Britain | Foster, JohnHouston, MuirMadigan, Chris | Article in Journal | | 2002 |
| Distinguishing Catholics and Protestants among Irish immigrants to Clydeside : a new approach to immigration and ethnicity in Victorian Britain | Foster, JohnHouston, MuirMadigan, Chris | Article in Journal | | 2002 |
| Divided loyalties : the question of the oath for Irish Catholics in the eighteenth century | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Four Courts | 1997 |
| Divine right? : the Parnell split in Meath | Lawlor, David | Monograph or Collective Volume | Cork University Press | 2007 |
| Dixon of Castlebridge, Co. Wexford | Goodall, David | Article in Journal | | 1984 |
| Do penance or perish? A study of the Magdalen asylums in Ireland | Finnegan, Frances | Monograph or Collective Volume | Congrave | 2001 |
| Doctrinal instruction in Irish : the work of Antony Gearnon, O.F.M. | Wall, Thomas | Article in Journal | | 1944 |
| Document : Clogher and the continent | | Article in Journal | | 1953 |
| Documentos de interés para Alcalá de Henares en la sección de manuscritos de Biblioteca Nacional de Madrid | Ballesteros Torres, Pedro | Article in Journal | | 2000 |
| Documents concerning the Collegium Pastorale Hibernicum of Louvain, 1624 | | Article in Journal | | 1951 |
| Documents concerning the Irish College in Madrid (1690-1720) | Hernanz Elvira, Jose Luis | Article in Journal | | 2014 |
| Documents concerning the oath of supremacy in early seventeenth-century Ireland | Ní Mhurchadha, Maighréad | Article in Journal | | 2010 |
| Documents from the State Papers concerning Miles McGrath | | Article in Journal | | 1958 |
| Documents of Irish interest in the Fondo Missioni of the Vatican Archives | | Article in Journal | | 1995 |
| Documents of the Irish colleges at Douai | | Article in Journal | | 1943 |
| Documents of the Irish Franciscan college at Prague | Jennings, Brendan | Article in Journal | | 1942 |
| Documents relating to the appointment of John Stafford as coadjutor to the bishop of Ferns, 1772 | Corish, Patrick J. | Article in Journal | | 1972 |
| Documents relating to the Irish College at Lille, 1634-c.1647 | | Article in Journal | | 2014 |
| Documents relating to Wexford friary and parish, 1733-98 | Ó Súilleabháin, Pádraig | Article in Journal | | 1965 |
| Doing good? Irish women, Catholicism and charity, 1852-1922 | Roddy, Sarah | Article in Book | | 2023 |
| Dom Columba Marmion : a biography | Tierney, Mark | Monograph or Collective Volume | Columba | 1994 |
| Dom Columba Marmion, 1858-1923 | O'Dea, Bernard | Article in Journal | | 1958 |
| Dom Columba Marmion, O. S. B. | Merten, Aubert | Article in Journal | | 1937 |
| Dom Vincent of Mount Melleray | Walsh, Kilian J. | Monograph or Collective Volume | Gill | 1962 |
| Dominic Collins : Irish martyr, Jesuit brother, 1566-1602 | Forristal, Desmond | Monograph or Collective Volume | Irish Messenger Publications | 1992 |
| Dominicans in Ireland, 1841-1845 | Fenning, Hugh | Article in Journal | | 1991 |
| Dominicans of Athenry : a chronology, 1241-1991 | Anonymous | Article in Book | | 1991 |
| Dominicans of Trim, 1683-1710 | Fenning, Hugh | Article in Journal | | 1961 |
| Dominick Bellew, 1745-1813 : parish priest of Dundalk and bishop of Killala | Hoban, Brendan | Article in Journal | | 1972 |
| Dominick Street : a Bellocian connection | Reynolds, Brian | Article in Journal | | 1991 |
| Don't ever tell : Kathy's story : a true story of a childhood destroyed by neglect and fear | O'Beirne, Kathy | Monograph or Collective Volume | Mainstream | 2005 |
| Donagh O'Daly O.S.M. 1600-c. 1664 - a forgotten Irish figure of the Counter-Reformation in Austria and Bohemia | Mooney, C. M. | Article in Journal | | 1979 |
| Donal Breen, Dean of Ferns (1588-1655) | Corish, Patrick J. | Article in Book | | 2007 |
| Dónall Ó Tuathail sagart na ráilte, 1880-1922 | Mac Giolla Domhnaigh, Gearóid | Article in Journal | | 1994 |
| Donegal priests in Scotland, 1829-1979 | Canning, B. J. (Bernard J.) | Article in Journal | | 1983 |
| Doneraile Catholic Church | Shine, Michael | Article in Journal | | 1997 |
| Douai College documents, 1639-1794 | | Monograph or Collective Volume | Catholic Record Society | 1972 |
| Dr Cullen's appointment to Armagh 1849 | Macaulay, Ambrose | Article in Journal | | 1980 |
| Dr Dermot O'Hurley | Gavin, Tadg | Monograph or Collective Volume | Catholic Truth Society | 1963 |
| Dr J.C. McQuaid and Eamon de Valera : insights on church and state | O'Neill, Thomas Patrick | Article in Journal | | 1992 |
| Dr James Donnelly, bishop of Clogher (1865-1893) and the ascendancy in Monaghan | Murnane, James H. | Article in Journal | | 1987 |
| Dr James Donnelly, bishop of Clogher (1865-1893) and the ascendancy in Monaghan. Part 2 | Murnane, James H. | Article in Journal | | 1988 |
| Dr James Gallagher, alumnus Kilmorensis:Bishop of Raphoe (1725-37) and (Kildare & Leighlin)1737-51) | Mac Murchaidh, Ciarán | Article in Journal | | 2004 |
| Dr James Louis O'Donnell (1737-1811), first bishop of Newfoundland | O'Connell, Philip | Article in Journal | | 1965 |
| Dr James MacDevitt and 'The Donegal Highlands' | Ó Saothraí, Séamus | Article in Journal | | 1978 |
| Dr James Magauran, bishop of Ardagh (1815-29) | Traynor, Owen | Article in Journal | | 1972 |
| Dr John Carpenter, archbishop of Dublin, 1760-1786 | Mac Giolla Phádraig, Brian | Article in Journal | | 1976 |
| Dr John Carpenter, archbishop of Dublin, 1760-86 | Mac Giolla Phádraig, B. | Article in Journal | | 1976 |
| Dr John F. McCaffrey : his life and work | Aspinwall, Bernard | Article in Journal | | 2002 |
| Dr John Gunson | O'Neill, Sally | Article in Journal | | 1988 |
| Dr John Kyne, Bishop of Meath, 1947-66 | French, Noel | Article in Journal | | 2018 |
| Dr Mannix | Brennan, Niall | Monograph or Collective Volume | Angus & Robertson | 1965 |
| Dr Nicholas Madgett's 'Constitutio ecclesiastica' | | Article in Journal | | 1976 |
| Dr Patrick McSwiney : president of the Irish College, Paris | Henchion, Richard | Article in Journal | | 1999 |
| Dr Patrick Murray, 1811-1882 | Kerr, Donal A. | Article in Journal | | 1982 |
| Dr Peter Flood : president of Maynooth, 1798-1803 | Flood, J. M. | Article in Journal | | 1948 |
| Dr Peter Flood : president of Maynooth, 1798-1803 | Masterson, M. J. | Article in Journal | | 1943 |
| Dr Plunket, bishop of Meath, 1779-1827 | Flood, J. M. | Article in Journal | | 1949 |
| Dr Russell and Newman's conversion | Tristram, Henry | Article in Journal | | 1945 |
| Dr Russell of Maynooth | Macaulay, Ambrose | Monograph or Collective Volume | Dartman, Longman and Todd | 1983 |
| Dr Terence P. Cunningham. (Obituary) | Mac An Ghallóglaigh, Domhnall | Article in Journal | | 1986 |
| Dr. Callan of Maynooth | McLaughlin, P. J. | Article in Journal | | 1936 |
| Dr. Croke, the Irish bishops and the Parnell crisis, 18 November 1890-21 April 1891 | Tierney, Mark | Article in Journal | | 1968 |
| Dr. James Donnelly : the early years | Ó Gallachair, Pádraig | Article in Journal | | 1984 |
| Dr. James Donnelly's letters to his Roman agent 1861-92 | | Article in Journal | | 1982 |
| Dr. James Donnelly, P.P. of Roslea (1857-65) | Mulligan, Patrick | Article in Journal | | 1983 |
| Dr. Plunkett, bishop of Meath, 1779-1827 | Flood, J. M. | Article in Journal | | 1949 |
| Dr. Richard Henebry | Stockley, Germaine | Article in Journal | | 1946 |
| Dr. Thomas Croke, archbishop of Cashel and Emly | Mehigan, P. D. | Article in Book | | 1942 |
| Drama in the courtroom, theater in the streets, Philadelphia's Irish riot of 1831 | Hoeber, Francis W. | Article in Journal | | 2001 |
| Drangan Church : a short history | Ó Gráda, Liam | Article in Book | | 1993 |
| Drawing lines on pages: remaking the Catholic parish maps of Ireland as a tidal public geography | Murphy, MichaelO'Mahony, Eoin | Article in Journal | | 2018 |
| Dream by the river : two centuries of St Louis Catholicism, 1766-1967 | Faherty, William Barnaby | Monograph or Collective Volume | Piraeus | 1973 |
| Drogheda 'Forty shilling freeholders' | Corcoran, Moira | Article in Journal | | 1998 |
| Drogheda churches: heraldry and memorial inscriptions | Bellew, Séamus | Article in Journal | | 2008 |
| Drogheda in 1912 - Place of Hope and Glory. | McCullen, John | Article in Journal | | 2012 |
| Drogheda in the 1950s: some memories | Mullen, Maura | Article in Journal | | 2012 |
| Dromahaire : story and pictures | Ó Duigneáin, Pronnsíos | Monograph or Collective Volume | Drumlin | 1990 |
| Dromore again in the melting pot 1766 | Kearns, Patrick | Article in Journal | | 1990 |
| Dublin : triumph and failure | Keane, Frank | Article in Book | | 1994 |
| Dublin diocesan archives | Curran, Michael | Article in Journal | | 1958 |
| Dublin diocesan archives - Hamilton papers (1) | Purcell, Mary | Article in Journal | | 1988 |
| Dublin diocesan archives : an introduction | Sheehy, David C. | Article in Journal | | 1987 |
| Dublin Diocesan Archives : Hamilton papers (2) | Hamilton, JohnPurcell, Mary | Article in Journal | | 1990 |
| Dublin Diocesan Archives : Hamilton Papers (4) | Purcell, Mary | Article in Journal | | 1993 |
| Dublin diocesan archives : Hamilton papers (4) | Purcell, Mary | Article in Journal | | 1993 |
| Dublin Diocesan Archives : Hamilton Papers (5) | Purcell, Mary | Article in Journal | | 1994 |
| Dublin diocesan archives : Hamilton papers (5) | Purcell, Mary | Article in Journal | | 1994 |
| Dublin Diocesan Archives : Hamilton Papers (6) | Purcell, Mary | Article in Journal | | 1995 |
| Dublin Diocesan Archives : Hamilton Papers (7) | Purcell, Mary | Article in Journal | | 1996 |
| Dublin Diocesan Archives : Hamilton Papers (8) | Purcell, Mary | Article in Journal | | 1997 |
| Dublin Diocesan Archives : Hamilton papers (9) | Purcell, Mary | Article in Journal | | 1998 |
| Dublin diocesan archives : Murray papers | Purcell, Mary | Article in Journal | | 1983 |
| Dublin Diocesan archives : Murray papers (4) | Purcell, Mary | Article in Journal | | 1984 |
| Dublin diocesan archives : Murray Papers (7) | Sheehy, David C. | Article in Journal | | 1987 |
| Dublin diocesan archives : Murray papers, 5 | Purcell, Mary | Article in Journal | | 1985 |
| Dublin imprints of Catholic interest 1770-82 | Fenning, Hugh | Article in Journal | | 2001 |
| Dublin imprints of Catholic interest 1783-1789 | Fenning, Hugh | Article in Journal | | 2003 |
| Dublin imprints of Catholic interest 1790-1795 | Fenning, Hugh | Article in Journal | | 2005 |
| Dublin imprints of Catholic interest 1796-9 | Fenning, Hugh | Article in Journal | | 2006 |
| Dublin imprints of Catholic interest 1800-09 | Fenning, Hugh | Article in Journal | | 2008 |
| Dublin imprints of Catholic interest : 1740-59 | Fenning, Hugh | Article in Journal | | 1999 |
| Dublin imprints of Catholic interest : 1760-69 | Fenning, Hugh | Article in Journal | | 2000 |
| Dublin imprints of Catholic interest : 1770-82 | Fenning, Hugh | Article in Journal | | 2001 |
| Dublin imprints of Catholic interest, 1810-1819 | | Article in Journal | | 2011 |
| Dublin priests at Charleston, South Carolina, in the eighteenth century | Madden, Richard C. | Article in Journal | | 1964 |
| Dublin's Catholic cathedrals II.- Saint Patrick's | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Irish Messenger Office | 1936 |
| Dublin's Churches of St Nicholas | O'Meara, Liam | Article in Journal | | 2010 |
| Dublin's Fitzwilliam Estate: a hidden landscape of discovery, Catholic agency and egalitarian suburban space | O'Kane, Finola | Article in Journal | | 2016 |
| Dublin's forgotten archbishop : Daniel Murray, 1768-1852 | Kerr, Donal A. | Article in Book | | 2000 |
| Dublin's Greek pro-cathedral | McCarthy, Michael (Michael Joseph), 1939-2010 | Article in Book | | 2000 |
| Dublin's pro-cathedral, 1812-1975 | Purcell, Mary | Monograph or Collective Volume | [s.n.] | 1975 |
| Dublin's turbulent priest : Cornelius Nary, 1658-1738 | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Royal Irish Academy | 1991 |
| Dunbrody through the ages | Walsh, Thomas P. | Article in Journal | | 1976 |
| Dungiven to death in China | Collins, Neil | Article in Journal | | 2013 |
| Durrow review : a jubilee review to celebrate the Presentation Sisters' 50 years at Castledurrow in Laois | Anonymous | Monograph or Collective Volume | Presentation Sisters | 1981 |
| Eaglais na gcatatómaí | Standún, Pádraig | Monograph or Collective Volume | Cló Iar-Chonnachta | 2004 |
| Eaglaisigh Caitleaha agus polaitíocht an Lucht Oibre sna caogadaí san Astráil | Mac Aonghusa, Proinsias | Article in Book | | 1989 |
| Éamann Iognáid Rís, 1762-1844 | Ó Gadhra, Nollaig | Monograph or Collective Volume | An Sagart | 1996 |
| Éamann Rís, 1762-1844 : fear beannaithe, fáidh agus fuascailteoir | Ó Cearbhaill, S. E. | Article in Book | | 1996 |
| Éamonn Iognáid Rís | Ó Gadhra, Nollaig | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1977 |
| Earls and Wild Geese. The Irish experience in Europe, 1600-1750 | Mac Eiteagáin, Darren | Article in Journal | | 1992 |
| Early Catholic Americana : a list of books and other works by Catholic authors in the U.S., 1729-1830 | Parsons, Wilfrid | Monograph or Collective Volume | Macmillan | 1939 |
| Early Catholic journalism in Canada | Cronin, P. F. | Article in Journal | | 1935 |
| Early Catholic periodicals in England | Fletcher, J. R. | Article in Journal | | 1936 |
| Early days in Presentation College Bray, 1921-1933 | O'Brien, Malachy | Article in Journal | | 1990 |
| Early evidence of Irish immigration to Scotland : a note on a Catholic parish register | Collins, Brenda | Article in Journal | | 1984 |
| Early history of Carlow College, 1793-1943 | Mac Suibhne, Peadar | Monograph or Collective Volume | Browne & Nolan | 1943 |
| Early Irish Jesuit education, II | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1941 |
| Early Irish Jesuit educators | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1940 |
| Early letters of John Farley (1861-1864) | McConville, Kieran
| Article in Journal | | 2013 |
| Early Modern English Catholicism : identity, memory and counter-Reformation | NA | Monograph or Collective Volume | Brill | 2017 |
| Early modern Ireland as a multiconfessional state | Gillespie, Raymond, 1955-2024 | Article in Book | | 2011 |
| Earthing the Eucharist | Newell, Ken | Article in Book | | 2012 |
| Eastwood House and the Moneybeg Demesne | Kavanagh, Myles | Article in Journal | | 2016 |
| Ecclesiastical law and the Reformation in Ireland | Osborough, W. N. (William Nial) | Article in Book | NA | 1992 |
| Ecclesiastical metropolitanism and the evolution of the catholic archdiocese of Toronto | Nicolson, Murray W. | Article in Journal | | 1982 |
| Economic growth, capital investment, and the Roman Catholic Church in nineteenth-century Ireland | Larkin, Emmet | Article in Journal | | 1967 |
| Ecumenism and Inter-Faith Relations | Power, Maria | Article in Book | Oxford University Press | 2023 |
| Edel Quinn, 1907-1944 | Forristal, Desmond | Monograph or Collective Volume | Dominican | 1994 |
| Edmond Byrne (1656-1723) archbishop of Dublin | Meagher, John | Article in Journal | | 1964 |
| Edmund Burke and Rome | Mahoney, T. H. D. | Article in Journal | | 1958 |
| Edmund Burke's Reflections on the coming revolution in Ireland | Conniff, James | Article in Journal | | 1986 |
| Edmund Campion | Waugh, Evelyn | Monograph or Collective Volume | Longmans | 1961 |
| Edmund Ignatius Rice and Theobald Mathew, O.F.M. Cap. | Augustine,OFM | Monograph or Collective Volume | Browne and Nolan | 1944 |
| Edmund Ignatius Rice, founder of the Irish Christian Brothers | Dargan, Pat | Article in Journal | | 1944 |
| Edmund Ignatius Rice, founder of the Irish Christian Brothers, 1762-1844 | Boylan, M. Eugene | Article in Journal | | 1944 |
| Edmund Murphy, Oliver Plunkett and the Popish Plot | Gibney, John, 1976- | Article in Journal | | 2004 |
| Edmund O'Reilly, archbishop of Armagh, 1657-1669 | Ó Fiaich, Tomás | Article in Book | | 1957 |
| Edmund Rice (1762-1844) | Mealy, Colm | Article in Book | | 2007 |
| Edmund Rice (1762-1844) : apostle of modernisation | Keogh, Dáire | Article in Journal | | 1996 |
| Edmund Rice - a timely restorer of faith and hope in Ireland | Kelleher, Daniel V. | Article in Book | | 1994 |
| Edmund Rice : the man and his time | Rushe, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1995 |
| Edmund Rice and Saint Teresa of Avila | Ó Cearbhaill, Seán | Article in Book | | 1994 |
| Edmund Rice and the Presentation Brothers | Feheney, J. M. | Article in Book | | 1996 |
| Edmund Rice, 1762-1844 | Keogh, Dáire | Monograph or Collective Volume | Four Courts | 1996 |
| Edmund Rice, his life and work | Anonymous | Article in Journal | | 1996 |
| Education and conflict in Northern Ireland : a guide to the literature | Dunn, Seamus | Monograph or Collective Volume | University of Ulster, Centre for the study of conflict | 1986 |
| Education and religion in Northern Ireland | Gallagher, A. M. | Monograph or Collective Volume | [s.n.] | 1989 |
| Education and the Catholic church in the Irish Free State | Duggan, John E. | Article in Journal | | 2001 |
| Education together for a change : integrated education and community relations in Northern Ireland | Moffat, Chris | Monograph or Collective Volume | [s.n.] | 1993 |
| Education, identity and women religious, 1800-1950 : convents, classrooms and colleges | | Monograph or Collective Volume | Routledge | 2016 |
| Edward Boyd Barrett and the great O'Neill | Ó Conluain, Proinsias | Article in Journal | | 1991 |
| Edward Cannon, 1739-1814 | Cannon, Robert | Article in Journal | | 1935 |
| Edward Caswall, Newman and the people of Catholic Ireland | Fenlon, Dermot | Article in Book | | 2006 |
| Edward Francis Collins, 1807-1872 – Hull's Catholic Victorian crusader | Gibbons, Jo | Article in Book | | 1999 |
| Edward Hay, historian of 1798 | Ó hOgartaigh, Margaret | Monograph or Collective Volume | The History Press | 2010 |
| Edward Hay, styled Mr Secretary Hay : Catholic politics, 1792-1822 | Whelan, Margaret | Thesis | | 1991 |
| Edward J. Byrne 1872-1941 : the forgotten archbishop of Dublin | Morrissey, Thomas J. | Monograph or Collective Volume | Columba Press | 2010 |
| Edward Maginn : a bishop for all seasons | Beattie, Sean | Article in Journal | | 1996 |
| Edward Martyn : an Irish Catholic eccentric | MacGreevy, Thomas | Article in Journal | | 1943 |
| Edward Martyn : the wealthy pauper | Scully, Séamus | Article in Journal | | 1992 |
| Edward Martyn and the founding of Dublin's Palestrina Choir | Nolan, J. C. M. | Article in Journal | | 2000 |
| Edward Thomas O'Dwyer | Rushe, John | Article in Journal | | 1981 |
| Église et état : 1960-1990 | Arnal-Corish, Marguerite | Article in Journal | | 1995 |
| Eighteenth century St. Patrick's and the Jesuits | Burke, Billy | Article in Journal | | 1977 |
| El colegio de los irlandeses | Arnáiz, Mariá JoséSancho, José Luis, 1962- | Monograph or Collective Volume | Fundación Colegio del Rey | 1985 |
| El Floreto; fonte storica sconosciuta di Maro da Libsona a del Wadding | Quaglia, Armando | Article in Journal | | 1957 |
| Élisabeth I d'Angleterre et les Catholiques | Antheunis, Louis | Article in Journal | | 1954 |
| Elizabethan England, Wales, and Ireland | Gibbons, Katy | Article in Book | | 2023 |
| Elizebethan recusant prose, 1559-1582 | Evennett, H. O.Southern, A. C. | Monograph or Collective Volume | Sands | 1950 |
| Elphin and Ross seek Franciscans as bishops, 1649-1651 | Millett, Benignus | Article in Journal | | 1993 |
| Embodied ideals and realities : Irish nuns and Irish womanhood, 1930s-1960s | McKenna, Yvonne | Article in Journal | | 2006 |
| Emigrant and emigré : George Thomas Plunkett, bishop of Aillfinne (1814-1827) | McGreevey, John Joseph | Monograph or Collective Volume | The author | 1992 |
| Emigrant Irish secular priests in America | Smith, William L. | Article in Journal | | 2000 |
| Employment and religion in Belfast 1901-1971 | Hepburn, Anthony C. | Monograph or Collective Volume | Fair Employment Agency for Northern Ireland | 1982 |
| Employment differentials in Northern Ireland and job discrimination : a critique | Compton, P. | Article in Book | | 1991 |
| Employment of Catholics in the public service in Ireland, 1859-1921 : a broad overview | McElvoy, Gerald | Article in Book | | 1995 |
| En jeux sociaux et relations église-état en Irlande | Brennan, Paul | Article in Journal | | 1987 |
| Encyclopaedia of Ireland | | Monograph or Collective Volume | | 1968 |
| Endowed schooling in Ireland : a history of deceit? | Walsh, Brendan | Article in Journal | | 2023 |
| Endurance and emergence : Catholics in Ireland in the eighteenth century | | Monograph or Collective Volume | Irish Academic Press | 1990 |
| Enforcing the English Reformation in Ireland : clerical resistance and political conflict in the Diocese of Dublin, 1534-1590 | Murray, James | Monograph or Collective Volume | Cambridge University Press | 2009 |
| England : the famine and the church in England | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| England and Ireland since 1800 | O'Farrell, Patrick James | Monograph or Collective Volume | Oxford University Press | 1975 |
| England and the Italian war of 1859 | Simpson, F. A. | Article in Journal | | 1962 |
| England's disgrace? J.S. Mill and the Irish question | Kinzer, Bruce L., 1948- | Monograph or Collective Volume | University of Toronto Press | 2001 |
| England, Ireland and Rome | Fitzwalter, Richard | Article in Journal | | 1913 |
| England, Ireland, and Rome, 1847-1848 | Kerr, Donal A. | Article in Book | | 1989 |
| England, Ireland, Scotland, and Wales : documents, 1541-1562 | Lukács, LászlóMcCoog, Thomas M. | Monograph or Collective Volume | Institutum Historicum Societatis Iesu | 2000 |
| England, Ireland, Scotland, Wales : the Christian Church, 1900-2000 | Robbins, Keith | Monograph or Collective Volume | Oxford University Press | 2008 |
| English and Irish books and convents in the seventeenth and eighteenth centuries : the link with the Low Countries | Blom, F. | Article in Journal | | 2002 |
| English and Irish catholics in Northumberland, c.1745-c.1860 | Doherty, Stephen | Thesis | | 1987 |
| English Catholic Attitudes to Irish Catholics | Gilley, Sheridan | Article in Journal | | 2009 |
| English Catholic attitudes to Irish Catholics | Gilley, Sheridan | Article in Journal | | 2009 |
| English Catholic attitudes to Irish Catholics | Gilley, Sheridan | Article in Book | | 2011 |
| English Catholic charity and the Irish poor in London (1700-1870) | Gilley, Sheridan | Article in Journal | | 1972 |
| English Catholic landlords in early modern Ireland - the Tasburghs and Cong Abbey Estate | Bergin, John | Article in Journal | | 2022 |
| English Catholics and the education of the poor, 1847-1902 | Tenbus, Eric G. | Monograph or Collective Volume | Pickering & Chatto | 2010 |
| English catholics and the Irish question, 1870-1893 | O'Callaghan, Edward Patrick | Thesis | | 1984 |
| English litanies of the early 18th century | Hennig, John | Article in Journal | | 1955 |
| English opinion | White, Terence De Vere | Article in Book | | 1949 |
| English recusant controversy in Spanish print culture: dissemination, popularisation, fictionalisation | Sáez-Hidalgo, Ana | Article in Book | | 2018 |
| English Roman Catholics and the Irish Free State | Greene, Thomas R. | Article in Journal | | 1984 |
| English-Irish conflict in the north-east of England | Neal, Frank | Article in Book | | 1993 |
| Ennis and Longford | Ó Dálaigh, Brian | Article in Book | | 2013 |
| Eoghan Ó hAirt, 1562-1603 | Ó Claidhimh, Liam | Article in Journal | | 1961 |
| Eoin Baiste Mac Sleighne, easpag (1693-1712), agus patrún ar an léann Gaelach | Ó Conchúir, Breandán | Article in Book | | 1983 |
| Episcopal comments on the Decreta pro recto regimine ecclesiarum hiberniae, 1635-36 | | Article in Journal | | 1964 |
| Episcopal decision-making in Ireland | Keogh, Dermot | Article in Book | | 1992 |
| Episcopal edicts of the diocese of Ossory in the eighteenth century, 2 : the edicts of John Thomas Troy (1739-1823) | Ó Fearghail, Fearghus | Article in Journal | | 2008 |
| Episcopal edicts of the Diocese of Ossory in the eighteenth century, I : the edicts of Thomas Burke (1709-1776). | Ó Fearghail, Fearghus | Article in Journal | | 2006 |
| Episcopal visitations of the dioceses of Cloyne and Ross, 1785-1828 [with index] | Derr, Eric A. | Article in Journal | | 2013 |
| Episcopal warriors in the British wars of religion | Hibbard, Caroline M., 1942- | Article in Book | | 1991 |
| Equality of opportunity in education in Northern Ireland | Livingstone, J. A. | Article in Book | | 1987 |
| Era of emancipation : British government of Ireland, 1812-1830 | Jenkins, Brian A. | Monograph or Collective Volume | McGill-Queen's University Press | 1988 |
| Essays on ethnic history | Galush, William | Article in Journal | | 1978 |
| Establishing a confessional Ireland, 1641–1691 | Armstrong, Robert | Article in Book | | 2018 |
| Establishing mission networks in the early modern catholic church: ireland, rome and the west indies, 1600-1669 | Binasco, Matteo | Thesis | | 2013 |
| Ethnic catholicism and craft unionism in Worcester, Massachusetts, 1887-1920 : a mixed story | Cohen, Bruce | Article in Journal | | 2004 |
| Ethnic masculinities in Australian boys' schools : Scots and Irish secondary schools in late nineteenth-century Australia | Brice, Ian D. | Article in Journal | | 2001 |
| Ethnic tensions, episcopal leadership and the emergence of the twentieth century American Catholic church : the Cleveland experience | Leonard, Henry B. | Article in Journal | | 1985 |
| Ethnicity and individuality : Irish migrants in London, 1980s-1990s | Kells, Mary | Thesis | | |
| Ethnicity as intercultural dialogue : 18th- and 19th-century Newfoundland | Keough, Willeen | Article in Journal | | 2005 |
| Ethos and education in Ireland | Norman, James | Monograph or Collective Volume | Lang | 2003 |
| Eucharistic Congress Dublin 1932 | Hasson, Seamus | Article in Journal | | 2012 |
| Eucharistic Congress June 1932 | Ní Aonghusa, Eilín | Article in Journal | | 2008 |
| Euntes Docete Omnes Gentes : emigrant Irish secular priests in America | Smith, William L. | Article in Journal | | 2000 |
| Evangelical and Roman Catholic missions to the Irish in London, 1830-70 | Gilley, Sheridan | Thesis | | 1970 |
| Evangelicalism and national identity in Ulster, 1921-1998 | Mitchel, Patrick | Monograph or Collective Volume | Oxford University Press | 2003 |
| Evangelising the faithful : Edmund Rice and the reformation of nineteenth-century Irish Catholicism | Keogh, Dáire | Article in Book | Columba | 2012 |
| Ever so holy: girls, mothers and Catholicism in Irish women's life-writings, 1850-1950 | Delay, Cara | Article in Book | | 2013 |
| Evil literature : banning the News of the World in Ireland | Rafter, Kevin | Article in Journal | | 2013 |
| Excellentissimi Sanctorum Hibernie : Irish saints' lives in Austrian legendaries | Ó Riain, Diarmuid | Article in Book | | 2015 |
| Exile in Erin : a confederate chaplain's story | Faherty, William Barnaby | Monograph or Collective Volume | Missouri Historical Society Press | 2002 |
| Exile Movement: Male Institutions, 1568-1640 | O'Connor, Thomas | Article in Book | | 2023 |
| Expecting no recompense on this side of the grave : the Irishmen of the papal army in Italy in 1860 | O'Driscoll, Florry | Article in Book | | 2015 |
| Explaining parochial and diocesan boundaries | Cullen, Seamus | Article in Book | | 1999 |
| Exploring the post-release experience of former Irish Industrial School “inmates” | Pembroke, Sinead | Article in Journal | | 2017 |
| Exploring the post-release experience of former Irish Industrial School “inmates” | Pembroke, Sinead | Article in Journal | | 2017 |
| Expressions of faith : Ulster's church heritage | Oram, Richard D. | Monograph or Collective Volume | Colourpoint | 2001 |
| Extracts from Father Clare's annotations to the conformity rolls | Chamney, Anne R. | Article in Journal | | 2001 |
| Extracts from Meath priests' wills 1658-1782 | Rice, Gerard | Article in Journal | | 1967 |
| Extracts from Roman Catholic clergy lists, 1704 to 1800 | Flatman, Richard | Article in Journal | | 2009 |
| Extracts from some issues of 'Archivium Hibernicum' and 'Collectanea Hibernica' concerning Killala diocesan affairs up to 1800 | MacHale, Edward | Article in Journal | | 1989 |
| Factory and workshop legislation and convent laundries, 1895-1907: campaigning for a Catholic exception | Harrison, Bridget | Article in Journal | | 2021 |
| Facts and figures of the Belfast pogrom, 1920-1922 | Kenna, G. B. | Monograph or Collective Volume | O'Connell Pub. Co. | 1922 |
| Faith and fatherland : the 'Irish News', the Catholic hierarchy and the management of dissidents | Buckley, Pat | Monograph or Collective Volume | Belfast Historical and Educational Society | 1991 |
| Faith and fatherland : the conflict between Catholic action and Irish nationalism before the first world war | Dunleavy, John | Article in Journal | | 1989 |
| Faith and fatherland? The Ancient Order of Hibernians, northern nationalism and the partition of Ireland | O'Donoghue, Martin | Article in Journal | | 2022 |
| Faith and fervour : religion and nationality in Ulster | Morrow, Duncan | Article in Book | | 1994 |
| Faith and patronage : the political career of Flaithrí Ó Maolchonaire, c.1560-1629 | Hazard, Benjamin | Monograph or Collective Volume | Irish Academic Press | 2009 |
| Faith and politics in the Northern conflict | Anonymous | Article in Journal | | 1984 |
| Faith and the nation education and religious identity in the Republic of Ireland | Williams, Kevin | Article in Journal | | 1999 |
| Faith and the nation : education and religious identity in the Republic of Ireland | Williams, Kevin | Article in Journal | | 1999 |
| Faith in Ireland, 1600-2000 | Elliott, Marianne | Article in Book | | 2014 |
| Faith of our fathers - evergreen memories | Gorman, Liam | Article in Journal | | 1999 |
| Faith of our fathers : the Gaelic aristocracy in Co. Offaly and the counter-reformation | Lyttleton, James | Article in Book | | 2009 |
| Faith or fatherland; the conflict between Catholic action and Irish nationalism before the First World War | Dunleavy, John | Article in Journal | | 1989 |
| Faith, culture and sovereignty : Irish nationality and its development, 1558-1625 | Caball, Marc | Article in Book | | 1998 |
| Faith, Famine and Fenianism : Paul Cullen and the Irish emigrant world | Moran, Gerard | Article in Book | | 2011 |
| Faith, nature, and science in the works of Canon Sheehan | O'Leary, Don | Article in Journal | | 2013 |
| Fall from grace | Broderick, Joe | Monograph or Collective Volume | Brandon | 1992 |
| Family history research in Co. Kildare | Reid, Noel | Article in Journal | | 1990 |
| Family letters of Robert Haly, S.J., 1838-68 | Laheen, Kevin A. | Article in Journal | | 2001 |
| Family's four nuns and a priest | Murphy, Hilary | Article in Journal | | 2008 |
| Famine - bliain an áir | Coughlan, A. J. | Article in Journal | | 2013 |
| Famine Irish and the American Racial State | O’Neill, Peter D. | Monograph or Collective Volume | Routledge | 2017 |
| Fantastic Mass Rocks and where to find them | McCormick, Cerys | Article in Journal | | 2019 |
| Farney, Carrickmacross and the Patrician Brothers | Nolan, Cuthbert | Monograph or Collective Volume | Patrician Brothers | 1996 |
| Fat god, thin god | Kennedy, James | Monograph or Collective Volume | Mercier Press | 2002 |
| Father Bernard's register and the Irish militia in Essex | Quinlivan, Patrick | Article in Journal | | 1973 |
| Father Boyce, Laly Morgan and Sir Walter Scott : a study in intertextuality and Catholic polemics | Maume, Patrick | Article in Book | | 2005 |
| Father Browne : a life in pictures | O'Donnell, E. E. | Monograph or Collective Volume | Wolfhound Press | 1994 |
| Father Charles of Mount Argus | Christopher, Fr. | Monograph or Collective Volume | Gill | 1955 |
| Father Christopher Cusack and the Irish College of Douai, 1594-1624 | Brady, John, d.1963 | Article in Book | | 1944 |
| Father Christopher Hollywood, S.J. 1559-1626 | Corboy, James | Article in Journal | | 1944 |
| Father David Fitzgerald | French, Johnny | Article in Journal | | 2010 |
| Father David Galwey, SJ (1579-1634) | Corboy, James | Article in Journal | | 1944 |
| Father Dominic and Newman | Edmund, Fr. | Article in Journal | | 1945 |
| Father Edmond Deane (1647-1717) | McGovern, Patrick | Article in Journal | | 1959 |
| Father Edward Francis Pigot, S. J. | O'Connell, D. J. K. | Article in Journal | | 1952 |
| Father Francis Nugent, founder of the Irish Capuchins | Bieler, Ludwig | Article in Journal | | 1948 |
| Father Francis Patrick Duffy : 'A very Irish, very Catholic, very American person' | Shelley, Thomas J. | Article in Journal | | 2004 |
| Father Gentili : priest and missionary | MacHugh, James | Monograph or Collective Volume | Clonmore & Reynolds | 1958 |
| Father Gentili, 1801-48 | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1948 |
| Father Gioacchino Ventura and Daniel O'Connell's funeral oration | Belletti, Alberto | Article in Book | | 2014 |
| Father Hand (1807-46) | Purcell, W. E. | Article in Journal | | 1942 |
| Father Henry Fitzsimon, S. J., 1566-1643 | Corboy, James | Article in Journal | | 1943 |
| Father Hugh O'Donnell, first parish priest of Belfast, 1772-1812 | Rogers, Patrick | Article in Book | | 1949 |
| Father James Archer, S. J., 1550-1625(?) | Corboy, James | Article in Journal | | 1944 |
| Father James Coigley | Ó Muirí, Réamonn | Article in Book | | 1997 |
| Father James Coombes [Obituary] | Walsh, Pat | Article in Journal | | 2000 |
| Father James Dixon and the 1798 Wexford rising | Waldersee, James | Article in Journal | | 1970 |
| Father James Keelan | Brady, John, d.1963 | Article in Journal | | 1958 |
| Father James Quigley : priest of Armagh and United Irishman | McEvoy, Brendan | Article in Journal | | 1970 |
| Father Jeremiah J. Callaghan : Butte's first Irish priest | Prodgers, Jeanette | Article in Journal | | 1984 |
| Father Jeremiah O'Callaghan, a man of principle, opponent of the Gombeen Men | Hyland, C. P. (Cal) | Article in Journal | | 1999 |
| Father Jeremiah O'Callaghan, a man of principle, opponent of the Gombeen men | Hyland, C. P. (Cal) | Article in Journal | | 1999 |
| Father John Austin, S. J. (1717-1784) | Rahilly, Alfred | Article in Journal | | 1939 |
| Father John Blowick - from memories to a memorial | Spicer, Willie | Article in Journal | | 2009 |
| Father John Christopher Drumgoole | Ó Finn, Michael | Article in Journal | | 1971 |
| Father John Colgan and the Louvain school | Mooney, Canice | Article in Journal | | 1958 |
| Father John Colgan, O.F.M., 1592-1658 : essays in commemoration of the third century of his death | | Monograph or Collective Volume | | 1959 |
| Father John Creagh in the Kimberleys | Boland, S. J. | Article in Journal | | 1988 |
| Father John Fitzsimmons (1806-1869) | S, P. | Article in Journal | | 2006 |
| Father John Hayes, founder of Muintir na Tire, 'People of the Land' | Rynne, Stephen | Monograph or Collective Volume | Clonmore & Reynolds|Burns & Oates | 1960 |
| Father John Hennessy, P.P. : 'Protestant priest' | Hyland, Cecil | Article in Journal | | 1988 |
| Father John McElroy SJ. : 'First' Catholic chaplain of the United States Army | Connolly, John | Article in Journal | | 2011 |
| Father John Murphy : famine priest | Reilly, A. J. | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| Father John Spratt : beloved of Dublin's poor | O'Dwyer, Peter | Monograph or Collective Volume | Carmelite Publications | 1972 |
| Father John Sullivan S.J. | Casey, Gerard | Article in Journal | | 2018 |
| Father John Sullivan, S. J. | MacGrath, Fergal | Monograph or Collective Volume | Longmans | 1952 |
| Father John Thayer of New England | Purcell, Richard J. | Article in Journal | | 1942 |
| Father Joseph Darlington, S. J., 1850-1939 | Howley, John | Article in Journal | | 1939 |
| Father Kennedy : patriot priest of Boolavogue | Kennedy, Patrick | Monograph or Collective Volume | Veritas | 1988 |
| Father Larry Murray | Mac An tSagairt, Liam | Monograph or Collective Volume | Eigse Oirialla | 1983 |
| Father Luke Wadding : commemorative volume | | Monograph or Collective Volume | | 1957 |
| Father Luke Wadding and St Isidore's College, Rome : biographical and historical note and documents | Cleary, Gregory | Monograph or Collective Volume | | 1925 |
| Father Luke Wadding and the Irish nation | Corish, Patrick J. | Article in Journal | | 1957 |
| Father Luke Wadding's work for the education of the Irish clergy | Cleary, Gregory | Article in Book | | 1937 |
| Father Mathew : a biography | Maguire, J. F.Rogers, Patrick | Article in Journal | | 1939 |
| Father Mathew : apostle of modernisation | Kearney, H. F. | Article in Book | | 1979 |
| Father Mathew : apostle of temperance in south west Clare | Murphy, Ignatius | Article in Journal | | 1985 |
| Father Mathew : temperance and Irish identity | Townend, Paul A. | Monograph or Collective Volume | Irish Academic Press | 2002 |
| Father Mathew in Ardmore | Kerrigan, Colm | Article in Journal | | 1992 |
| Father Mathew in Limerick | Kerrigan, Colm | Article in Journal | | 1985 |
| Father Mathew's disciples : American Catholic support for temperance, 1840-1920 | Quinn, John F. | Article in Journal | | 1996 |
| Father McDonnell's visit to Derrynane in 1833 | Ó Súilleabháin, Pádraig | Article in Journal | | 1973 |
| Father McDyer of Glencolmcille : an autobiography | McDyer, James | Monograph or Collective Volume | Brandon | 1982 |
| Father Michael Comyn : parish priest of Kilkee and Doonbeg, 1798-1854 | Murphy, Ignatius | Article in Journal | | 1986 |
| Father Michael Conway in Kilfian parish 1826-1839 | MacHale, E. | Article in Journal | | 1993 |
| Father Michael Maher | Ellis, William | Article in Journal | | 1988 |
| Father Nicholas Kearns and state prisoners | Meagher, John | Article in Journal | | 1955 |
| Father Nicholas Sheehy (c.1728-1766) | Power, Thomas P. | Article in Book | | 1998 |
| Father Nugent of Liverpool | Bennet, John | Monograph or Collective Volume | [s.n.] | 1949 |
| Father O Finachty's miracles | Faulkner, Anselm | Article in Journal | | 1965 |
| Father Pat Walsh: At the threshold of a new beginning | Keohane, DeeKeohane, Mike | Article in Journal | | 2009 |
| Father Patrick Lavelle : the rise and fall of an Irish nationalist, 1825-1886, a radical priest in Mayo | Moran, Gerard | Monograph or Collective Volume | Four Courts | 1994 |
| Father Patrick Peyton CSC and family prayer | Gribble, Richard | Article in Book | | 2013 |
| Father Patrick Short, SS, CC | Ó Muirí, Réamonn | Article in Journal | | 1998 |
| Father Paul O'Sullivan OP, EDM (1871-1958) | Casey, Thomas | Article in Book | | 2015 |
| Father Paul Sherlock, S. J. (1595-1646) | Kelly, K. | Article in Journal | | 1976 |
| Father Paul Walsh (19th June 1885 - 18th June, 1941) | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1943 |
| Father Paul Walsh : the scholar | Shaw, Francis | Article in Journal | | 1941 |
| Father Paul Walsh, D.Litt | Brady, John, d.1963 | Article in Journal | | 1941 |
| Father Peter B. Bradley and Irish Franciscan chaplains in World Wars I and II | Fennessy, Ignatius | Article in Journal | | 2003 |
| Father Peter C. Yorke : Irish-American leader | Foley, Timothy P. (Tadhg)Walsh, James P. | Article in Journal | | 1974 |
| Father Peter Daly (c. 1788-1868) | Mitchell, James | Article in Journal | | 1983 |
| Father Peter Wadding, S.J. : chancellor of the University of Prague, 1629-41 | O'Dea, Paul | Article in Journal | | 1941 |
| Father T. Corcoran, S. J. born 1872. Professor of education in University College, Dublin, 1909-42 | Gleeson, Dermot F. | Article in Journal | | 1943 |
| Father Theobald Mathew | Lucey, Cornelius | Article in Journal | | 1956 |
| Father Theobald Mathew (1790-1856) | Fintan, Fr. | Article in Journal | | 1940 |
| Father Theobald Mathew : apostle of temperance | Rogers, Patrick | Monograph or Collective Volume | Browne and Nolan | 1943 |
| Father Theobald Mathew, apostle of temperance | Lysaght, Moira | Article in Journal | | 1983 |
| Father Theobald Mathew, O. M. Cap. : a centenary memoir | Rogers, Patrick | Article in Journal | | 1937 |
| Father Theobald Mathew, O.M. Cap., as seen by his contemporaries | | Article in Journal | | 1940 |
| Father Thomas A. Finlay, S. J., 1848-1940 | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Father Thomas Hore and Wexford, Iowa | Schmitz, Kenneth P. | Article in Journal | | 1975 |
| Father Thomas Philip Donnelly (13 March 1920 - 11 March 2013) | Lynch, Gerard | Article in Journal | | 2013 |
| Father Thomas Stanislaus Power CM, CF : a Vincentian with the ANZAC in World War I | Hagerty, James | Article in Book | | 2015 |
| Father Tim | McAuliffe, Harold J. | Monograph or Collective Volume | Bruce Publishing Co. | 1944 |
| Father Tom - the Land League priest | De Vál, Seamus S. | Article in Journal | | 1978 |
| Father Tom : an authorised portrait of Cardinal Tomás Ó Fiaich | Fitzgerald, B. | Monograph or Collective Volume | Fount | 1990 |
| Father Tom Burke, O.P., 1830-1883 | Taheny, Luke J. | Article in Book | | 1991 |
| Father Tom Finlay | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Father Tom Maguire : polemicist, popular preacher and patriot, 1792-1847 | McGovern, Raymond | Article in Journal | | 1971 |
| Father Tom Maguire and the Clare election | Brady, Patrick | Article in Journal | | 1958 |
| Father Vincent McNabb, O. P. | Delany, Bernard | Article in Journal | | 1943 |
| Father William Barry : priest and novelist | Gilley, Sheridan | Article in Journal | | 1998 |
| Father William Mason Walsh and Governor D'Arcy 1871-6 | Walsh, Edward | Article in Journal | | 2006 |
| Father William Phelan : an Irish trouble-maker in Arichat | Wagg, Phyllis C. | Article in Journal | | 1986 |
| Father Yorke on Father O'Growney | Yorke, Peter | Article in Journal | | 1964 |
| Favourers, intercessors and patrons : why the Irish saints mattered so much to the Irish Franciscans | McCafferty, John | Article in Book | | 2015 |
| Fear an leabhair : Pádraig Ó Fiannachta | Ó Héalaí, Pádraig | Article in Book | Roinn na Sean-Gaeilge, Coláiste Phádraig, Maigh Nuad | 1994 |
| Federalist, social radical and anti-sectarian : Thaddeus O'Malley (1798-1877) | D'Arcy, Fergus A., 1943- | Article in Book | | 1998 |
| Fenianism as a global phenomenon : Thomas O'Malley Baines, papal soldier and Fenian convict | Maume, Patrick | Article in Book | | 2006 |
| Fenians and Ribbonmen : the development of Republican politics in east Tyrone | McCluskey, Fergal | Monograph or Collective Volume | Manchester University Press | 2011 |
| Ferns | Furlong, Nicholas | Article in Book | | 1999 |
| Ferns Diocesan Youth Service | Percival, Hazel | Article in Book | | 1999 |
| Ferris's in Coleraine | Langdale, Eileen | Article in Journal | | 2013 |
| Few, uncooperative, and endangered: the activity of the Irish Catholic priests in the West Indies of the seventeenth century, 1638-1668 | Binasco, Matteo | Article in Book | | 2010 |
| Fifty voices : a report from Bellinter | O'Kelly, Kevin | Article in Book | | 1986 |
| Fifty years of MSC mission, 1952-2002 | Mac Carthaigh, Donncha | Monograph or Collective Volume | MSC | 2002 |
| Filí agus cléir san ochtú haois déag | Heussaff, Anna | Monograph or Collective Volume | An Clóchomhar | 1992 |
| Financial mismanagement at the Irish College, 1772–98 | Korten, Christopher | Article in Book | | 2018 |
| Fire in Wicklow Presbytery, 1928 | Fagan, Ben | Article in Journal | | 2015 |
| First rector of the Catholic University of America | Canning, B. J. (Bernard J.) | Article in Journal | | 1984 |
| First rural parish to get an organ | Power, John | Article in Journal | | 2010 |
| Fitzpatrick's Boston, 1846-1866 : John Bernard Fitzpatrick, third bishop of Boston | O'Connor, Thomas H. | Monograph or Collective Volume | Northeastern UP | 1984 |
| Flaithrí Ó Maolchonaire and the Red Hand of Ulster | Hazard, Benjamin | Article in Journal | | 2010 |
| Flaithrí, Firbisigh and Maoilechlainn : three Uí Mhaoil Chonaire brothers in the late sixteenth and early seventeenth centuries | Hazard, Benjamin | Article in Book | | 2015 |
| Florence Conry, archbishop of Tuam | Jennings, Brendan | Article in Journal | | 1949 |
| Florence Conry, Archbishop of Tuam, 1608–1629 | Neary, J. | Article in Journal | | 1911 |
| Florence Conry, Hugh de Burgo, Luke Wadding and Jansenism | Ceyssens, Lucien | Article in Book | | 1957 |
| Florence Conry, the Flight of the Earls, and native-Catholic militancy | Casway, Jerrold | Article in Journal | | 2011 |
| Football and sectarianism in Glasgow during the 1920s and 1930s | Davies, Andrew, 1962 Feb. 8- | Article in Journal | | 2006 |
| Footprints of Fr. Theobald Mathew, apostle of temperance | Augustine,OFM | Monograph or Collective Volume | Gill | 1947 |
| For faith and fortune : the education of Catholic immigrants in Detroit, 1805-1925 | Vinyard, Jo Ellen | Monograph or Collective Volume | University of Illinois Press | 1998 |
| For God and Ireland : the fight for moral superiority in Ireland, 1922-1932 | McCabe, Michael P., 1977- | Monograph or Collective Volume | Irish Academic Press | 2012 |
| For parliament Malachy : Malachy Duggan, parish priest of Moyarta and Kilballyowen, c.1780-1849 | Murphy, Ignatius | Article in Journal | | 1986 |
| For the Pope and Rome: Irish Catholic soldiers of the Papal Battalion of St. Patrick in Italy in 1860 | O’Driscoll, Florry | Article in Book | | 2019 |
| Forgotten by history : the life and times of John Lanigan, D.D., D.C.L., D.S.S., priest, professor and historian | Feehan, James A. | Article in Journal | | 2005 |
| Forkhill protestants and Forkhill catholics, 1787-1858 | Madden, Kyla, 1974- | Monograph or Collective Volume | Liverpool University Press | 2005 |
| Form and function in nineteenth-century literature : the second reformation movement and the dialogue poems of Dáibhí de Barra (1757/8–1851) | Ní Shiadhail, Niamh | Article in Journal | | 2016 |
| Forming Catholic Communities: Irish, Scots and English College networks in Europe, 1568–1918 | | Monograph or Collective Volume | BRILL | 2018 |
| Forum on sectarianism | Foster, John Wilson | Article in Journal | | 1989 |
| Found : a great speech by Daniel O'Connell | Griffith, Francis | Article in Journal | | 1968 |
| Four Claddagh churches, 1488, 1669, 1800-1815, 1891 | Anonymous | Article in Book | | 1991 |
| Four old Queen's County parishes | Hyland, Jackie | Article in Journal | | 1992 |
| Four Victorian weddings and a funeral | Comerford, Patrick | Article in Book | | 2019 |
| Fr Arthur O'Leary : a Capuchin of Blackamoor Lane | Walsh, T. J. | Article in Journal | | 1948 |
| Fr Benjamin Joseph Braughall : the saintly pilgrim priest who was curate at Raheen for ten years | O'Leary, Edward, Rev., 1844-1924 | Article in Journal | | 2016 |
| Fr Bernard Murphy of Termonmagurk, 1832-97 | Bradley, John, Rev. | Article in Journal | | 1988 |
| Fr Browne, SJ, photographer | Myers, Kevin | Article in Journal | | 1994 |
| Fr Daniel Hickey, Kilmacud curate and World War One chaplain | Sobolewski, Peter | Article in Journal | | 2020 |
| Fr David Humphreys and new Tipperary | Marnane, Denis G. | Article in Book | | 1985 |
| Fr Edward Campion 'The Practical Patriot' | Cocoman, Noel | Article in Journal | | 2024 |
| Fr Harry Bohan pays tribute to his friend Fr. Tony King on his 40th anniversary as a priest | Bohan, Harry | Article in Journal | | 2003 |
| Fr James Cullen, Founder of the Pioneer Total Abstinence Association | McDarby, John | Article in Journal | | 2016 |
| Fr John Conmee : a portrait of the rector | Murray, Patrick | Article in Journal | | 1985 |
| Fr John Early : American Jesuit educator | Varga, Nicholas | Article in Journal | | 1986 |
| Fr John F. Greene (1904-1973 PP Clonbroney | MacNerney, James P. | Article in Journal | | 2007 |
| Fr John Fahey (1883-1959): Celebrated Tipperary-Born Great War Australian Army Chaplain | Cusack, Danny | Article in Journal | | 2024 |
| Fr John Farrelly, doctor of the Sorbonne (1657-1736) | Swords, Liam | Article in Journal | | 1998 |
| Fr John Hassan : a forgotten poet | Hasson, Seamus | Article in Journal | | 1988 |
| Fr John Joseph Kennedy DSO Republican and Imperial War Hero | Ó Cinnéide, Lorcán | Article in Journal | | 2023 |
| Fr John Murphy (Boolavogue) monument | Keogh, John | Article in Journal | | 1986 |
| Fr John Power - fact and folklore | Daly, Eugene | Article in Journal | | 2003 |
| Fr John Waldron, Chicago, U.S.A. | | Article in Journal | | 1996 |
| Fr Joseph Fenelon OFM Cap., born Ballinakill, Garryhill, Bagenalstown, Co. Carlow | Kavanagh, Myles | Article in Journal | | 2019 |
| Fr Martin Doyle - the man and his times | Joyce, John | Article in Journal | | 2013 |
| Fr Mathew : apostle of moderation | Kearney, Hugh | Article in Book | | 1979 |
| Fr Patrick McCabe | O'Reilly, Peggy | Article in Journal | | 2000 |
| Fr Patrick Smyth, peacemaker at Eureka | McDonnell, Thomas | Article in Journal | | 1985 |
| Fr Paul Henry O'Sullivan, O.P. | Gaughan, J. Anthony, 1932- | Article in Journal | | 2005 |
| Fr Robert O'Keeffe, parish priest, and the Callan controversy 1869-81 | Hogan, Patrick | Article in Book | | 1990 |
| Fr Stephen Daly, Ireland’s first Capuchin | Egan, Michael | Article in Journal | | 1996 |
| Fr Thomas Gogarty 1877-1949 local historian and noted antiquarian | Murphy, Donald | Article in Journal | | 1992 |
| Fr Thomas Shinnick P.P. Bandon 1778-1814 - pastor of his flock | O'Flynn, Paddy | Article in Journal | | 2012 |
| Fr Tom McGrath PP VF | O'Sullivan, Mary | Article in Journal | | 2006 |
| Fr William Ferris's History of BallymacElligott: the book, the bishop and the ban | McCarthy, Brendan | Article in Journal | | 2019 |
| Fr Willie (Bill) Devine | Mullan, Desmond | Article in Journal | | 1988 |
| Fr Willie (Bill) Devine | Mullan, Desmond | Article in Journal | | 1987 |
| Fr. Anthony Fahy OP | Fahy, Michael | Article in Book | | 2003 |
| Fr. Benignus Millett, OFM, 1922-2006 | Corish, Patrick J. | Article in Journal | | 2006 |
| Fr. Daniel McSwiney, 1797-1845 : a Famine victim | Walsh, Christy | Article in Journal | | 1998 |
| Fr. Gowan and the Congregation of the Holy Faith | Bugler, M. Theodore | Article in Book | | 1997 |
| Fr. Griffin, 1892-1920 | Ó Laoi, Pádraic | Monograph or Collective Volume | The author | 1994 |
| Fr. John Casey, antiquarian | MacMahon, Bryan | Article in Book | | 2012 |
| Fr. John Flatley (1846-1929) - Turbulent priest | McGinley, Michael | Article in Journal | | 2012 |
| Fr. John Gowan and St. Brigid's work | Prunty, Jacinta | Article in Book | | 1997 |
| Fr. John Gowan and the Vincentians | McCormack, Jim | Article in Book | | 1997 |
| Fr. Kennedy and the Meelin cavalry | Brosnan, John Joe | Article in Journal | | 1984 |
| Fr. Manus Sweeney - a story of 1798 | McNamara, Irene Patten | Article in Journal | | 1998 |
| Fr. Michael O'Flanagan, 1876-1942 : a priest for the people | Carroll, Denis | Article in Journal | | 1992 |
| Fr. Mogue Kearns (a rebel priest in 1798) | Kavanagh, Myles | Article in Journal | | 1997 |
| Fr. Mullen - Carlow's worthy clergyman | Anonymous | Article in Journal | | 2000 |
| Fr. Owen (Eugene) McCarthy, 1822-1857 | MacMahon, Bryan | Article in Book | | 2012 |
| Fr. Patrick Walsh - the republican priest | Williams, Tom | Article in Journal | | 2001 |
| Fr. Theobald Mathew, O.F.M. Cap. : the apostle of temperance | Lysaght, Moira | Monograph or Collective Volume | Four Courts | 1983 |
| Fr. Thomas Shinnick PP Bandon 1778-1814 - Parish Population Survey 1807|Bibliography | O'Flynn, Paddy | Article in Journal | | 2014 |
| Fr. William O'Donnell - 'the Waterloo priest' | Anonymous | Article in Journal | | 1993 |
| Fr. Wolfe's description of Limerick city, 1574 | Bradshaw, Brendan | Article in Journal | | 1977 |
| Fragmenta Rapotensiana : contributions towards a diocesan dictionary | Ó Canann, Tomás G. | Article in Journal | | 1996 |
| Fragmenta Rapotensiana : contributions towards a diocesan dictionary | Ó Canann, Tomás | Article in Journal | | 1996 |
| Fragments of a life | Rafferty, Kevin, 1936- | Monograph or Collective Volume | Columba | 2009 |
| Frances Power Cobbe and the patriarchs | O'Connor, Maureen P. | Article in Book | | 2005 |
| Francis Ledwidge, an Irish and Catholic poet | Anonymous | Article in Journal | | 1940 |
| Francis MacDonnell, OFM, son of the first earl of Antrim (d. 1636) | Giblin, Cathaldus | Article in Journal | | 1975 |
| Francis Moylan, bishop of Cork, 1735-1815 | Walsh, T. J. | Article in Journal | | 1950 |
| Francis Tregian: Benefactor of Irish refugees | Tivnan, Frank | Article in Journal | | 2018 |
| Franciscan Donegal | O'Donnell, Terence | Article in Journal | | 1957 |
| Franciscan Donegal : a souvenir of the dedication of the Franciscan church, Ros Nuala, to the Immaculate Heart of Mary, on Sunday, 29th June, 1952 | NA | Monograph or Collective Volume | Franciscan Friary, Ros Nuala | 1952 |
| Franciscan Ireland : the story of seven hundred and fifty years of the friars minor in Ireland with notes on all the major sites associated with the friars and a brief description of the other members of the Franciscan family in Ireland | Conlan, Patrick, 1940- | Monograph or Collective Volume | | 1978 |
| Franciscan servants, Tertiaries and Lay Brothers in nineteenth-century Ireland | O'Kane, Stephen | Article in Journal | | 2019 |
| Franciscans in Ireland in 1654 | Millett, Benignus | Article in Journal | | 1993 |
| Franciscans leave Drogheda after 755 years | Garry, James | Article in Journal | | 2000 |
| Franciscans of Inishowen and Derry | Faulkner, Anselm | Article in Journal | | 1982 |
| Francisco de Borja and the Irish mission of the Society of Jesus | Lennon, Colm | Article in Book | | 2011 |
| Franco-Irish ecclesiastical networks and the career of François Anglade in the Royal Catholic College oif St Patrick at Maynooth, 1757-1834 | Ferté, Patrick
| Article in Journal | | 2023 |
| François Porter, franciscain irlandais à Rome (1632-1702) | Ceyssens, Lucien | Article in Book | | 1964 |
| Frank Duff | O'Brien, Leon | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| Frank Duff | Ó Broin, León, 1902-1990 | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| Frank Duff : a biography | Ó Broin, León, 1902-1990 | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Frank Duff : a life story | Kennedy, Finola | Monograph or Collective Volume | Burns & Oates | 2011 |
| Frank Duff : Proinsias Ó Duibh : bunaitheoir Léigiún Mhuire | De Vál, Séamas S. | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2009 |
| Frank O'Connor and the literary development of Radio Éireann | Morgan-Zayachek, Eileen | Article in Journal | | 2009 |
| Frank O'Reilly: and the 31st International Eucharistic Congress of 1932 | Smith, Audrey | Article in Journal | | 2016 |
| Frederick Augustus Hervey, 1730-1803, 4th earl of Bristol, bishop of Derry : 'le bienfaiteur des Catholiques' | Walsh, J. R. | Monograph or Collective Volume | St Patrick's College, Dept of Modern History | 1972 |
| Frederick Lucas : a biography | Riethmüller, James | Monograph or Collective Volume | | 1862 |
| Frederick Lucas, The Tablet and Ireland : a Victorian forerunner of Liberation Theology | Gilley, Sheridan | Article in Book | | 1993 |
| Freedom and the fifth commandment. Catholic priests and political violence in Ireland, 1919-21 | Heffernan, Brian | Monograph or Collective Volume | Manchester University Press | 2014 |
| French bishops' mission to Ireland, October 1916 | O'Hanlon, Oliver | Article in Journal | | 2016 |
| Friar Thomas Francis Cassidy and his large collection of books | Fennessy, Ignatius, OFM | Article in Journal | | 2009 |
| Friar Thomas Francis Cassidy and his large collection of books | Fennessy, Ignatius, OFM | Article in Journal | | 2009 |
| Friar's Island Oratory, Killaloe, and its fascination for James Gandon and others | Harbison, Peter | Article in Journal | | 2005 |
| Friarstown 'house of refuge' | Moran, William | Article in Journal | | 1961 |
| Friends of Ireland: early O'Connellism in Lower Canada | Lynn, Shane | Article in Journal | | 2016 |
| From "victims" of the Melk reform to apostles of the Counter-Reformation : the Irish regular clergy in the Habsburg dominions | Walsh, Katherine | Article in Book | | 1989 |
| From Alexander VII to Alexander VIII | Hanly, John | Article in Book | | 1972 |
| From Carrickbeg to Rome - the story of Fr Michael Hickey | Briody, Mícheál | Article in Journal | | 2001 |
| From Catholic Workers' College to National College of Ireland, 1951-1998 | Morrissey, Thomas J. | Article in Journal | | 1998 |
| From Connie Dodger to John Charles and beyond | Dolan, T. P. (Terence Patrick) | Article in Book | | 2013 |
| From Douai to Dublin : four hundred years of educational endeavour | McClelland, Vincent Alan | Article in Journal | | 1970 |
| From Dublin to New Orleans : Nora and Alice's journey to America 1889 | Hoy, SuellenMac Curtain, Margaret | Monograph or Collective Volume | Attic Press | 1994 |
| From ecumenism to community relations : inter-church relationships in Northern Ireland, 1980-2005 | Power, Maria | Monograph or Collective Volume | Irish Academic Press | 2007 |
| From ecumenism to community relations : interchurch relationships in Northern Ireland, 1980-1999 | Power, Maria | Thesis | | |
| From generation to generation : Clondalkin village and neighbourhood | Byrne, Roy H.Graham, Anne | Monograph or Collective Volume | [s.n.] | 1989 |
| From Hathrantone to Star of the Sea - Catholic places of worship in Portstewart | Wilson,Frances A.
| Article in Journal | | 2016 |
| From hunting field to cloister | Gwynn, M. M. Xavier | Monograph or Collective Volume | Clonmore & Reynolds | 1946 |
| From Kilcolgan Court to Ballindown. Tracing the lineage of Terence MacCoghlan of Kilcolgan Court through the Jacobite Oxburghs and Reys | Ryan, Brendan | Article in Journal | | 2011 |
| From Killymuck to Scranton : Felix McGuckin, emigrant, soldier and priest | McGuckin, J. H. | Article in Journal | | 1982 |
| From Kilmuckridges to the White River Valley : Irish Catholic settlement in Daviess County, Indiana, 1821-1850 | Gahan, Daniel | Article in Book | | 2007 |
| From militancy to social mission : the Salvation Army and street disturbances in Liverpool, 1879-1887 | Murdoch, N. H. | Article in Book | | 1992 |
| From rejection to integration : a centenary of service of Daughters of Charity to persons with a mental handicap | Robins, Joseph | Monograph or Collective Volume | Gill & Macmillan | 1992 |
| From Seagoe to Jerusalem with a singular Franciscan | Fennessy, Ignatius | Article in Journal | | 1999 |
| From the archives : 'His Grace is not pleased' | McQuaid, John Charles, bishop, 1895-1973 | Article in Journal | | 1998 |
| From the Boyne to Waterloo: military identity in Meath during the Long Eighteenth Century | McDonnell, Ciarán | Article in Journal | | 2019 |
| From the cradle to the grave : popular Catholicism among the Irish in Wales | O'Leary, Paul | Article in Book | | 1996 |
| From the origin to humani generis : Ireland as a case study | O'Leary, Don | Article in Book | | 2009 |
| From the plains of Meath to the sands of Egypt: Geoffrey de Geneville and Jean de Joinville, crusader brothers | McDonnell, Ciarán | Article in Journal | | 2018 |
| From Townland to Township : The complex evolution of a dissipative Famine Irish community in County Durham | McManus, Michael | Article in Journal | | 2004 |
| From Tuam to Ballyspellan | Ó Fearghail, Feargus | Article in Journal | | 1987 |
| From Victorian "Little Ireland" to heritage trail : catholicism, community and change in Liverpool's docklands | Boyce, Frank | Article in Book | | 1999 |
| From Westmeath to Peru Full Circle : Memoirs of a Westmeath missionary in Sicuani, Cuzco | Kelleher, Desmond | Article in Journal | | 2006 |
| Frontiers in the Irish church - regional and cultural | Simms, Katharine | Article in Book | | 1995 |
| Further letters of Robert Haly, S.J., in the Irish Jesuit Archives | Laheen, Kevin A. | Article in Journal | | 2003 |
| Gaelic and Catholic in the early middle ages | Maier, Bernhard | Article in Book | | 2013 |
| Gaelic Catholicism and the Ulster plantation | Gillespie, Raymond, 1955-2024 | Article in Book | | 2013 |
| Gaelic Ireland, popular politics and Daniel O'Connell | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Journal | | 1975 |
| Gaelic, Catholic and European : Irish priests and Irish colleges | Smith, Peter | Article in Book | [UK]:Institute for Theological Partnerships Publishing | 2015 |
| Gaelscrinte san Eoraip | Ó Fiaich, Tomás | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1986 |
| Galileo and Peter Lombard | McMullin, Ernan | Article in Journal | | 2007 |
| Galileo Galilei, Robert Bellarmine and Peter Lombard | McMullin, Ernan | Article in Book | | 2010 |
| Gall mór mo linne (2) - An tÁrd-Deochan Mac Giolla Chearra | Ó Dochartaigh, Gearalt | Article in Journal | | 1995 |
| Gall Mór mo linne - an tAthair Peadar Mac Loinsigh | Ó Dochartaigh, Gearalt | Article in Journal | | 1994 |
| Gallic gifts: the Irish College in Paris and strategies of charity, 1870-1945 | Smith, Sean Alexander | Article in Journal | | 2016 |
| Gallicanism and the veto controversy : church, state and Catholic community in early nineteenth-century Ireland | Leighton, C. D. A. | Article in Book | | 1990 |
| Gallicanism at Maynooth : Archbishop Cullen and the royal visitation of 1853 | Corish, Patrick J. | Article in Book | | 1979 |
| Galway Catholic Parish Churches, 1846 | Mac Lochlainn, Alf, 1926- | Article in Journal | | 2003 |
| Galway diocesan archives | Power, J. | Article in Journal | | 1993 |
| Galway Dominican nuns : a chronology, 1644-1988 | Anonymous | Article in Book | | 1991 |
| Galway Dominicans : a chronology, 1241-1991 | Anonymous | Article in Book | | 1991 |
| Garibaldi or the Pope : Newcastle's Irish Riot of 1861 | Jackson, Daniel M. | Article in Journal | | 2001 |
| Garvaghy : a community under siege | Garvaghy Residents | Monograph or Collective Volume | Beyond the Pale | 1999 |
| Genealogy : 'Annie's son' : Ann Carragher mother of Thomas James Fee : Tomás Ó Fiaich, archbishop of Armagh, created cardinal 30 June 1979 | Caraher Family History Society | Monograph or Collective Volume | Caraher Family History Society | 1991 |
| Gentlemen-bishops and faction fighters : additional letters pertaining to Newfoundland catholicism, from the Franciscan library at Killiney, Ireland | Rollmann, Hans | Article in Journal | | 1988 |
| Gentlemen-bishops and faction fighters : the letters of bishops O Donel, Lambert, Scallan and other Irish missionaries | Byrne, Cyril J.Ó Donel, James Louis | Monograph or Collective Volume | Jesperson Press | 1984 |
| Geoffrey Keating : apologist of Irish Ireland | Bradshaw, Brendan | Article in Book | | 1993 |
| Geoffrey Keating's Eochair Sgiath an Aifrinn and the Catholic Reformation in Ireland | Cunningham, Bernadette | Article in Book | | 1989 |
| Geographical propinquity among pre-famine Catholic Irish settlers in upper Canada | Brunger, Alan G. | Article in Journal | | 1982 |
| Geographies of science and religion: Catholics, the British Association and Repeal Agitation in Cork (1843) | Toal, Ciaran | Article in Journal | | 2014 |
| George Faulkner and the Irish Catholics | O'Connor, Charles | Article in Journal | | 1939 |
| George G. Higgins and the quest for worker justice : the evolution of Catholic social thought in America | O'Brien, John J. | Monograph or Collective Volume | Rowman & Littlefield | 2005 |
| George Joseph Plunkett Browne | Coen, Martin | Article in Journal | | 1978 |
| George Thomas Plunkett, bishop of Elphin, 1814-1827 | McGreevy, John | Article in Book | | 2006 |
| George Tyrell, Jacques Maritain and the challenge of modernity | Fanning, Bryan | Article in Journal | | 2012 |
| Gerald O'Donovan : priest, novelist and nation-builder | Ryan, John | Article in Book | | 2003 |
| Gerald O'Donovan, priest, novelist, intellectual: a forgotten leader of the Irish revival | Ryan, John Francis | Thesis | | 1984 |
| Gerald O’Donovan : priest, novelist, and Irish revivalist | Ryan, John F. | Article in Journal | | 1996 |
| Gerard Manley Hopkins : doomed to succeed by failure | Thomas, A. | Article in Journal | | 1966 |
| Gerard Manley Hopkins and his friends in Dublin | McGinley, Michael | Article in Journal | | 2017 |
| German church, Irish church : late nineteenth-century inter-ethnic rivalry in St. Louis's catholic community | Tillinger, Elaine C. | Article in Journal | | 1990 |
| Getting to know Grad Dad: Michael Davitt (1846-1906 | Davitt, Tom, CM | Article in Journal | | 2002 |
| Getting to know the 'Other' : inter-church groups and peace-building in Northern Ireland | Power, Maria | Article in Book | | 2007 |
| Giolla Phádraig Ó Luchráin c.1577-1612 | Hamill, TomÓ Doibhlin, Ciarán, | Article in Journal | | 1992 |
| Giovan Pietro Bellori (1613-1696) Sindaco Apostolico del Collegio S. Isidoro, Roma | Bellardini, DonatellaCostacurta, Claudia | Article in Journal | | 2014 |
| Gladstone, church and state | Megahey, Alan | Article in Book | | 2010 |
| Glasgow : the uneasy peace : religious tension in modern Scotland | Gallagher, Tom | Monograph or Collective Volume | Manchester University Press | 1987 |
| Gleanings on the personnel of the Catholic Convention, 1792-93 [with index] | Woods, C. J. (Christopher John) | Article in Journal | | 2014 |
| Glengariff : Sacred Heart Church 1902-2002 : a centenary celebration | Anonymous | Monograph or Collective Volume | Committee members, etc. | 2002 |
| Glenstal Abbey, Music and The Liturgical Movement | Love, Cyprian | Article in Journal | | 2006 |
| Gli esuli irlandesi nella Roma del seicento (Irish exiles in seventeenth-century Rome) | Binasco, Matteo | Article in Journal | | 2014 |
| Glimpses of 18th-century Dublin priests | Meagher, John | Article in Journal | | 1958 |
| Glimpses of eighteenth-century priests | Meagher, John | Article in Journal | | 1958 |
| Gnasanna na Marbh | Ó Duinn, Sean | Article in Journal | | 1994 |
| Go teach all nations : a history of the Irish Province of the Congregation of the Holy Spirit | | Monograph or Collective Volume | Paraclete | 2000 |
| Goaded to madness : the battle of Slabtown | Hutchinson, PaulPower, Michael | Monograph or Collective Volume | Slabtown Press | 1999 |
| God and the gun : the church and Irish terrorism | Dillon, Martin | Monograph or Collective Volume | Orion | 1997 |
| God's entrepreneurs : how Irish missionaries tried to change the world | Humphreys, Joe | Monograph or Collective Volume | New Island | 2010 |
| God's scourge on a sinful nation:The Great Famine from an Achill Mission perspective | Byrne, Patricia | Article in Journal | | 2021 |
| God-provoking democrat : the remarkable life of Archibald Hamilton Rowan | Whelan, Fergus | Monograph or Collective Volume | New Island | 2015 |
| Godless colleges and mixed education in Ireland : extracts from speeches and writings of Thomas Wyse, Daniel O'Connell, Thomas Davis, Charles Gavan Duffy, Frank Hugh O'Donnell and others | Clifford, Angela | Monograph or Collective Volume | Athol | 1992 |
| Godly burden : the Catholic sisterhoods in twentieth century Ireland | Mac Curtain, Margaret | Article in Book | | 1997 |
| Going my way and Irish-American catholicism : myth and reality | McCaffrey, Lawrence J., 1925- | Article in Journal | | 2000 |
| Going to Holy Cross | De Varebeke, Hubert J. | Article in Journal | | 1955 |
| Going to the ladies' fair : Irish Catholics in New York city 1870-1900 | McDonnell, Colleen | Article in Book | | 1996 |
| Golden jubilee, 1931-81 : dedicated to most Rev. Donal J. Herlihy, bishop of Ferns, on the occasion of the golden jubilee of his priesthood, 4th April 1981 | Anonymous | Monograph or Collective Volume | Hugh O'Byrne | 1981 |
| Goliath and the boy David : Henry Fitzsimon, James Usher and the birth of Irish religious debate | Ford, Alan, 1956- | Article in Book | | 2016 |
| Good hearts : Catholic sisters in Chicago's past | Hoy, Suellen | Monograph or Collective Volume | University of Illinois Press | 2006 |
| Goodbye to Catholic Ireland | Kenny, Mary | Monograph or Collective Volume | New Island Books | 2000 |
| Goodbye to Catholic Ireland : a social, personal and cultural history from the fall of Parnell to the realm of Mary Robinson | Kenny, Mary | Monograph or Collective Volume | Sinclair-Stevenson | 1997 |
| Gorestown Catholic Church | Dillon, Charles | Article in Journal | | 2001 |
| Gothic revival architecture in Ireland. 2 vols. | Richardson, D. S. | Monograph or Collective Volume | | 1983 |
| Government and Roman Catholics in Ireland, 1850-1940 | Kerr, Donal A. | Article in Book | | 1992 |
| Government attitudes to religious nonconformity in Ireland 1660-1719 | McGuire, James | Article in Book | | 1987 |
| Grace's card : Irish Catholic landlords 1690-1800 | Chenevix Trench, Charles | Monograph or Collective Volume | Mercier Press | 1997 |
| Grangemockler : church and people, 1897-1997 | | Monograph or Collective Volume | Grangemockler Centenary Committee | 1997 |
| Gravestone Inscriptions of Co. Cork XIX: Tracton Burial Ground | Henchion, Richard | Article in Journal | | 2015 |
| Great Britain : England and Wales | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Monograph or Collective Volume | Gill | 1968 |
| Great Britain : Scotland | Handley, J. E. | Monograph or Collective Volume | Gill | 1968 |
| Great Britain and the Holy See : 1746-1870 [review article] | Buschkuhl, Matthias | Article in Journal | | 1985 |
| Great changes, increased demands: education, teacher training and the Irish Presentation Sisters | O'Reilly, Louise | Article in Book | | 2016 |
| Great men we have given to history : Ted O'Riordan looks at the life of Dr Mannix, archbishop of Melbourne | O'Riordan, Ted | Article in Journal | | 1987 |
| Greater Ireland and the Australian immigrant : the religious dimension | Richards, Eric | Article in Book | | 2015 |
| Gregory VII and the Irish church | Gwynn, Aubrey | Article in Journal | | 1948 |
| Growth and decline of churchly religion | Fahey, Tony | Article in Book | | 2012 |
| Guardians at Multyfarnham Friary | Fennessy, Ignatius | Article in Journal | | 2013 |
| Guide to Catholic literature, 1888-1940 | Anonymous | Monograph or Collective Volume | Romig | 1942 |
| Guide to documents of Irish and British interest in Fondo Borghese, ser. 1 | | Article in Journal | | 1961 |
| Guido Bentivoglio e la politica Europea del suo tempo, 1607-1621 | Belvederi, Raffaele | Monograph or Collective Volume | Liviana | 1962 |
| Habits of compassion : Irish Catholic nuns and the origins of New York's welfare system, 1830-1920 | Fitzgerald, Maureen | Monograph or Collective Volume | University of Illinois Press | 2006 |
| Half empty or half full? Images and interpretations in the historical analysis of the Catholic Irish in nineteenth-century Canada | Darroch, Gordon | Article in Journal | | 1993 |
| Handmaids of autonomous women : the charitable activities, institution building and communal relationships of Catholic sisters in nineteenth-century Wisconsin | Deacon, F. | Monograph or Collective Volume | University of Wisconsin Press | 1989 |
| Have the snakes come back? : The family and the defence of Catholic educational structures in Ireland (1957–1975) | Walsh, John, 1971- | Article in Journal | | 2008 |
| Healing and hope : memories of an Irish ecumenist | Hurley, Michael | Monograph or Collective Volume | Columba | 2003 |
| Heber Mac Mahon, soldier bishop of the Confederation of Kilkenny | Moore, S. P. | Article in Journal | | 1952 |
| Heber Macmahon, Bishop of Clogher (d. 1650) | Millett, Benignus | Article in Journal | | 1997 |
| Hedge schools of Kerry | Lyons, Tony | Article in Journal | | 2004 |
| Heil Mary : Magdalen asylums and moral regulation in Ireland | Titley, Brian | Article in Journal | | 2006 |
| Hell or Connaught! : the Cromwellian settlement of Ireland, 1652-1660 | Ellis, Peter Berresford, 1943- | Monograph or Collective Volume | Blackstaff Press | 1988 |
| Hell or Connaught! the Cromwellian colonisation of Ireland, 1652-1660 | Ellis, Peter Berresford, 1943- | Monograph or Collective Volume | Hamish Hamilton | 1975 |
| Henry Fitzsimon, the Irish Jesuits and Catholic identity in the early modern period | Jackson, Brian | Article in Book | | 2013 |
| Henry Gillespie - from Mallow to Iowa | Moynihan, Anne | Article in Journal | | 2018 |
| Henry Ó Dochartaigh : vicar-general of the diocese of Meath | Bonner, Brian | Article in Journal | | 1980 |
| Henry Shea: Cork's first mercantile tycoon? | O'Shea, James | Article in Journal | | 2011 |
| Heraldry in St Peter's R.C. Church, West Street, Drogheda | Bellew, Séamus | Article in Journal | | 2014 |
| Heraldry in the Cathedral of the Assumption, Tuam | Bellew, Séamus | Article in Journal | | 2009 |
| Heretic London, holy poverty and the Irish poor, 1830-1870. | Gilley, Sheridan | Article in Journal | | 1971 |
| Heretic London, holy poverty and the Irish poor, 1830-70 | Gilley, Sheridan | Article in Journal | | 1971 |
| Herrschaftlich-staatliche Gewalt, Gesellschaft, und Katholizismus in Irland vom 16-18 Jahrhundert .. | Hammermayer, Ludwig | Monograph or Collective Volume | | 1970 |
| Herrschaftlichstaatliche Gewalt, Gesellschaft und Katholizismus in Irland vom 16.-18. Jahrhundert | Hammermayer, Ludwig | Article in Book | | 1969 |
| Heurs et malheurs de deux saints nationaux: Patrick et Brigitte dans la tourmente politique (1850-2014) | Maignant, Catherine | Article in Journal | | 2015 |
| Hibernia Dominicana; sive, historia provinciae Hiberniae Ordinis Praedicatorum | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
| Monograph or Collective Volume | Gregg | 1970 |
| Hidden by 1688 and after : Irish Catholic migration to France, 1590-1685 | Ó Ciosáin, Éamon | Article in Book | | 2010 |
| Hidden treasure : sources for Catholic history in the Derby collection, Liverpool Record Office | Davies, John | Article in Journal | | 2007 |
| Hide and seek : the Irish priest in the Vatican who defied the Nazi command. A dramatic true story of rivalry and survival during WWII | Walker, Stephen | Monograph or Collective Volume | Collins | 2011 |
| Hierarchia catholica medii et recentioris aevi. Vol. 7 : 1800-1846 | Pirminus, P.Ritzler, P. Remigius | Monograph or Collective Volume | Il Messaggero di S. Antonio | 1968 |
| Higher education for Catholics | McQuaid, John Charles, bishop, 1895-1973 | Monograph or Collective Volume | [s.n.] | 1961 |
| Highly respectable and accomplished ladies : Catholic women religious in America, 1790-1850 | Misner, Barbara | Monograph or Collective Volume | # | 1988 |
| Histoire de L'église depuis les origines jusqu'à nos jours | Fliche, AugustinJarry, E.Martin, V.Preclin, E. | Monograph or Collective Volume | Bloud & Gay | 1955 |
| Historic sites and traditions, 3 : Father James Maria McGuckin, O.M.I., Irish pioneer priest in British Columbia | Ó Muirí, Réamonn | Article in Journal | | 1999 |
| Historic Ulster Churches | Walker, Simon, 1970- | Monograph or Collective Volume | Institute of Irish Studies, Queen's University Belfast | 2000 |
| Historical Marian devotional practices among the Daughters of Charity | Neylon, Anne | Article in Book | | 2014 |
| Historical sketch of the late Catholic Association of Ireland. | Wyse, Thomas, Sir, 1791-1862 | Monograph or Collective Volume | Henry Colburn | 1829 |
| History and antiquities of the diocese of Ossory | Carrigan, William, 1860-1924 | Monograph or Collective Volume | [s.n.] | 1980 |
| History and destiny in the making of the Irish Catholic spiritual empire | Whelan, Irene | Article in Book | | 2017 |
| History and pluralism : Gladstone and the Maynooth grant controversy | McCarthy, John-Paul | Article in Book | | 2010 |
| History and politics : Macaulay and Ireland | Millgate, Jane | Article in Journal | | 1973 |
| History and the shaping of Irish Protestantism | Bowen, Desmond | Monograph or Collective Volume | Peter Lang | 1996 |
| History as authority in Alexander Campbell's 1837 debate with Bishop Purcell | Weedman, Mark | Article in Journal | | 1996 |
| History of Clonmany Village, Inishowen | Harkin, Marius | Article in Journal | | 2019 |
| History of Clonmel | Burke, William P. | Monograph or Collective Volume | | 1907 |
| History of Drogheda up to date | Hughes, Anne | Monograph or Collective Volume | Old Drogheda Society | 2003 |
| History of St Colman's College, Violet Hill, Newry, Dromore Diocesan Seminary | Campbell, E.Mooney, Bernard J. | Monograph or Collective Volume | Bennett | 1944 |
| History of St Mary's parish church | Fennell, Harry | Article in Journal | | 1986 |
| History of the Anglo-Irish province of the Missionary Oblates of Mary Immaculate : part 1 : 1841-1921 | Denny, Vincent | Monograph or Collective Volume | Oblate Fathers | 1991 |
| History of the archdiocese of Boston in the various stages of its development 1604 to 1943. Vol. 1-3 | Harrington, Edward T.Lord, R. H.Sexton, John E. | Monograph or Collective Volume | Sheed & Ward | 1944 |
| History of the catholic archbishops of Dublin since the reformation. Vol. 1 | Moran, Patrick Francis, cardinal, 1830-1911 | Monograph or Collective Volume | | 1864 |
| History of the Catholic schools of Kilkenny from the year 1782 to the present time. | Murphy, N. | Article in Journal | | 1883 |
| History of the Diocese of Meath 1860-1993 | | Monograph or Collective Volume | The Most Rev. Michael Smith, Bishop of Meath | 1995 |
| History of the Irish College, Paris, 1578-1800 : calendar of the papers of the Irish College, Paris | | Article in Journal | | 1980 |
| History of the Irish Hospitalité of Our Lady of Lourdes, 1930-1990 | Kelly, Patrick | Monograph or Collective Volume | Brendan Byrne & Associates | 1992 |
| History of the Popes from the close of the middle ages. Vol. 26 (Leo XI and Paul V, 1605-21) | Pastor, Ludwig | Monograph or Collective Volume | Kegan Paul | 1937 |
| History of the town and county of Wexford. 6 vols. | | Monograph or Collective Volume | | 1900 |
| History of the Wexford Catholic Young Men's Society, 1855-2008, Vol. 2. | O'Rourke, Michael A. | Monograph or Collective Volume | Breffni | 2009 |
| History of the Wexford Catholic Young Men's Society, 1855-2008. Vol. 1. | O'Rourke, Michael A. | Monograph or Collective Volume | Breffni | 2008 |
| Hold firm : John Charles McQuaid and the second Vatican Council | Carty, Francis Xavier | Monograph or Collective Volume | Columba | 2007 |
| Holy Cross 1902-2002 : centenary souvenir | | Monograph or Collective Volume | Horizon Publications | 2002 |
| Holy Cross : the untold story | Cadwallader, Anne | Monograph or Collective Volume | Brehon Press | 2004 |
| Holy Cross : Tipperary's famed religious site | Hayes, William J. | Article in Book | | 1993 |
| Holy Cross church, Kenmare, 150 (1864-2014) : a social and local history | Holycross 150 History Group, Kenmare | Monograph or Collective Volume | Holy Cross 150 History Group | 2014 |
| Holy Cross College, Clonliffe, 1859-1959 | Sherry, Richard | Article in Journal | | 1960 |
| Holy Cross College, Clonliffe, Dublin 1859-1959 | Anonymous | Monograph or Collective Volume | Holy Cross College | 1963 |
| Holy Cross College, Clonliffe, Dublin, 1859-1959 | Anonymous | Monograph or Collective Volume | Irish Printers Ltd | 1962 |
| Holy Family parish : centenary celebration 1893-1993 | | Monograph or Collective Volume | Holy Family Parish | 1993 |
| Holy Office documents concerning Terence MacSwiney's hunger strike (1920) | Belletti, Alberto | Article in Journal | | 2018 |
| Holy Redeemer Church, 1792-1991 : a Bray parish | Ó Cathaoir, Brendan | Monograph or Collective Volume | Church of the Most Holy Redeemer | 1991 |
| Holy secularity in a rural parish | Ward, Leo | Article in Journal | | 1971 |
| Holy smoke? | Herschan, Otto | Monograph or Collective Volume | TAF Publishing | 2011 |
| Holy Trinity Church, Killiney, 1858-1996 : a parish history | Parish of Holy Trinity, Killiney | Monograph or Collective Volume | Parish of the Holy Trinity, Killiney | 1996 |
| Holy war at Aasleagh, 1851-1884 | McGinley, Michael | Article in Journal | | 2008 |
| Holy war in Belfast | Boyd, Andrew, 1921- | Monograph or Collective Volume | Pretani Press | 1987 |
| Holy war in Belfast | Boyd, Andrew, 1921- | Monograph or Collective Volume | Anvil | 1969 |
| Holy water and a twig : Catholic households and women’s religious authority in modern Ireland | Delay, Cara | Article in Journal | | 2018 |
| Holy wells | Daly, Eugene | Article in Journal | | 2011 |
| Holy Year 1950 Drogheda pilgrimage to Rome | McQuillan, Finian | Article in Journal | | 2007 |
| Home rule as Rome rule : the unspoken unionist and loyalist case | Kelleher, Derry | Monograph or Collective Volume | Justice Books | 1997 |
| Hope against history : the course of the Ulster conflict | Holland, Jack | Monograph or Collective Volume | Hodder and Stoughton | 1999 |
| Hopkin's closest friend in Ireland : Robert Curtis, S.J. | Feeney, Joseph | Article in Book | | 1988 |
| Hopkin's political ideas | Marucci, Franco | Article in Book | | 1988 |
| Hopkins in 1884 | Bergonzi, Bernard | Article in Book | | 1988 |
| How Cashel and Emly were united | Ó Laoí, Cristóir | Article in Journal | | 1990 |
| How much discrimination was there under the Unionist regime, 1921-68? | Whyte, John | Article in Book | | 1983 |
| How not to start a mission? : Andrew Boylan (1842-1910) and the Philippines | McConvery, Brendan | Article in Book | | 2015 |
| How shall we sing in a foreign land? : music of Irish-Catholic immigrants in the antebellum United States | Grimes, R. R. | Monograph or Collective Volume | University of Notre Dame Press | 1996 |
| How the Birr Stone was brought to Cullaun | Murphy, Ignatius | Article in Journal | | 1996 |
| How the Irish became Protestant in America | Carroll, Michael P. | Article in Journal | | 2006 |
| How the Irish became white | Ignatiev, Noel | Monograph or Collective Volume | Routledge | 1995 |
| How were the 1641 depositions manipulated in England to persuade the English masses of Catholic persecution? | Cooper, Sophie | Article in Journal | | 2011 |
| Hugh Charles Horan of Galway and Mother Mary MacKillop | Fennessy, Ignatius | Article in Journal | | 1999 |
| Hugh MacMahon, Bishop of Clogher 1707-15 and Archbishop of Armagh 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| Hugh McCaghwell, O.F.M., archbishop of Armagh (+ 1626) : aspects of his life | Giblin, Cathaldus | Article in Book | | 1995 |
| Hugh McMahon, bishop of Clogher, 1707-15, and archbishop of Armagh, 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| Hugh O'Neill and the nine years' war in Tudor Ireland | Morgan, Hiram | Article in Journal | | 1993 |
| Hughes: lion of American Catholicism | McCann, Richard Daniel | Monograph or Collective Volume | E-Book Time | 2017 |
| Hymns and Irish Catholicism - a new perspective | Phelan, Helen | Article in Journal | | 2002 |
| I remember Maynooth | Kevin, Neil | Monograph or Collective Volume | St Patrick's College | 1995 |
| I volti di Luca Wadding | Bellardini, DonatellaCostacurta, Claudia | Article in Journal | | 2013 |
| Identities in conflict : New York Irish Catholics' response to the Spanish Civil War, 1936-1939 | Wood, Julie K. | Article in Journal | | 1992 |
| Identity and ideology in Northern Ireland | Gallagher, A. M. | Article in Journal | | 1988 |
| Identity and political fragmentation in independent Ireland, 1923-83 | Fuller, Louise | Article in Book | | 2013 |
| Identity in Northern Ireland : communities politics and change | McCall, Cathal | Monograph or Collective Volume | Macmillan | 1999 |
| Identity, place, and the political mobilization of urban minorities : comparative perspectives on Irish Catholics in Buffalo and Toronto 1880 - 1910 | Jenkins, William | Article in Journal | | 2007 |
| Ignazio Persico's 'Relazione sulla condizione religiosa e civile d'Irlanda' (1887) | Belletti, Alberto | Article in Journal | | 2019 |
| Illegitimacy and Pre-Nuptial Pregnancy in Ireland before 1864 : The evidence of some Catholic Parish Registers | Connolly, Sean J. | Article in Journal | | 1979 |
| Illuminated addresses | Law, Edward J. | Article in Journal | | 2010 |
| Illustrations of the Holy Trinity in Galway city | Walsh, Paul | Article in Journal | | 1991 |
| Images of God : Northern Ireland and theology | O'Hanlon, Gerard | Article in Journal | | 1984 |
| Images of Hartford's Irish-Catholic community : 1827-1867 | Duffy, Joseph | Article in Journal | | 1990 |
| Imagining angels in early modern Ireland | Gillespie, Raymond, 1955-2024 | Article in Book | | 2006 |
| Imirce na hIarlaí : aistriúchán agus nótaí ar léacht leis an Chairdinéal Tomás Ó Fiaich - 'from Donegal to Rome by boat, coach and horseback' : turas na nUaisle Gael as Éirinn 1607-8, coiste éigse Sheáin Bháin | Ó Murchú, Marcas | Monograph or Collective Volume | Coiscéim | 2007 |
| Immigrant nuns : their participation in the process of Americanization : Massachusetts and Rhode Island, 1880-1920 | Donovan, Grace | Article in Journal | | 1991 |
| Immigrants and their church | Liptak, D. A. | Monograph or Collective Volume | Macmillan | 1989 |
| Immigrants in the city : New York's Irish and German Catholics | Dolan, Jay P., 1936- | Article in Journal | | 1972 |
| Immortal Dan : Daniel O'Connell in Irish folk tradition | Uí Ógáin, Ríonach | Monograph or Collective Volume | Geography Publications | 1995 |
| Improvements to the parish in 1898 | Power, John | Article in Journal | | 2009 |
| Improving the housing conditions for the Irish migratory potato workers in Scotland : the work of the Bishops' (Gresham) Committee, 1920-1923 | Holmes, Heather | Article in Journal | | 1998 |
| Impure thoughts : sexuality, Catholicism and literature in twentieth-century Ireland | Cronin, Michael G. | Monograph or Collective Volume | Manchester UP | 2012 |
| In a corner of seventeenth-century Rome | Woods, Penelope | Article in Book | | 2015 |
| In ainm na saoire: Piaras Mac Canna, Caitliceach, Óglach, Gaeilgeoir | Mac Peaircín, Liam, 1938-2019 | Article in Journal | | 2012 |
| In communion with the 'king of Sunday' | Kelly, David | Article in Book | | 2012 |
| In defence of Irish catholicism : Charles de Montalembert's aborted 'History of Ireland' and 'Journal Intime' | Rivière, Marc Serge | Article in Book | | 2004 |
| In Fr John Murphy's footsteps | Furlong, Nicholas | Article in Journal | | 1987 |
| In general, they do not answer well? : Irish priests in the western lowlands of Scotland, 1838-50 | Mitchell, Martin J. | Article in Book | | 2003 |
| In memoriam : Rt Rev. Monsignor Laurence Marron | Anonymous | Article in Journal | | 1996 |
| In memoriam : Very Rev. Pádraig Ó Gallachair | Anonymous | Article in Journal | | 1996 |
| In memory of Caheraderry chapel | Bellow, Susan | Article in Journal | | 1989 |
| In memory of Rev. James V. Hayes, S.M.A., 1918-1999 | Darcy, Brendan | Article in Journal | | 2000 |
| In novi orbis amplitudine: Irish Franciscan views of the Americas in the seventeenth century, 1610-1683 | Hazard, Benjamin | Article in Book | | 2010 |
| In pursuit of a positive construction: the Irish Catholics and the Williamite articles of surrender, 1690-1701 | Kinsella, Eoin | Article in Journal | | 2009 |
| In Search of a State : Catholics in Northern Ireland | O'Connor, Fionnuala | Monograph or Collective Volume | The Blackstaff Press | 1993 |
| In search of ethnicity in Ireland | Poole, Michael A. | Article in Book | | 1997 |
| In search of honour and a Catholic monarch : the assimiliation and integration of an Irish minority in early modern Castile, 1601-1638 | O'Scea, Ciaran | Thesis | | 2007 |
| In search of James : celebrating the 250th anniversary of the birth of James Hoban, architect and builder of the White House|In search of James: a sequel | Bergin, Denis | Article in Journal | | 2021 |
| In the footsteps of long ago saints : Irish Capuchins in the Rhineland | McCafferty, John | Article in Book | | 2015 |
| In the footsteps of O'Donovan and O'Flyn. Settlement and religious practice in the parish of Kiltullagh from 1828 to 1858 | McGuire, Kevin | Article in Journal | | 2019 |
| In the lands of Brien | Brien, Christopher | Monograph or Collective Volume | Christopher Brien | 1984 |
| In the line of duty : priests who ministered to the famine victims | O'Shea, Kieran | Article in Book | | 1997 |
| In the name of God and Ireland : the conflict between the Catholic bishops and militant republicans in Ireland, 1922-5 | McCabe, Michael P., 1977- | Thesis | | |
| In the palm of God's hand? the Irish catholic experience in mid-nineteenth century Guelph | Nash-Chambers, Debra L. | Article in Journal | | 1984 |
| In the shadow of the spire - a personal recollection | Shaw, Eric | Article in Journal | | 2005 |
| In the shadow of the spire : a profile of St John's parish | Fitzmaurice, W.Hannan, Kevin | Monograph or Collective Volume | [s.n.] | 1991 |
| In times gone by... | O' Connor, Tom, Fr. | Article in Book | | 2012 |
| Incorporating and denationalizing the Irish in England : the role of the Catholic church | Hickman, Mary J. | Article in Book | | 1996 |
| Independent Orangeism and class conflict in Edwardian Belfast : a reinterpretation | Patterson, Henry | Article in Journal | | 1980 |
| Influencing the influential : Irish Jesuit periodicals | O'Keeffe, Declan | Article in Book | | 2021 |
| Innocent XII and early Irish penal legislation | Creighton, Seamus | Article in Journal | | 1962 |
| Insel der Martyrer oder ein Volk von Rebellen? Deutschlands Katholiken und die irische Nationalbewegung in der Ara Daniel O'Connells (ca. 1820-1847) | Schneider, Bernhard | Article in Journal | | 2008 |
| Insights into fifty years of episcopal elections (1774-1824) | Bolster, M. A. | Article in Journal | | 1972 |
| Inspired educator and ecumenist of roots | O'Carroll, Michael | Article in Journal | | 1998 |
| Institutional solution to a social problem: industrial schools in Ireland and the Sisters of Mercy, 1869 to 1950 | Lunney, Sheila | Thesis | | 1996 |
| Insular Christianity : alternative models of the church in Britain and Ireland, c. 1570 – c. 1700 | | Monograph or Collective Volume | Manchester University Press | 2013 |
| Insurgent Wicklow 1798 : the story as written by Rev. Bro. Luke Cullen, O.D.C., 1793-1859. | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | | 1948 |
| Inter-church relations in the 19th and 20th centuries | Warren, Stanley E. | Article in Book | | 2005 |
| Interdenominational relations in Connacht in the eighteenth-century | Solon, John | Article in Journal | | 1993 |
| Interdenominational relations in pre-famine Tipperary | McGrath, Thomas | Article in Book | | 1985 |
| Internal ethnic friction : orange and green in nineteenth-century New York, 1868–1872 | McGlmpsey, Christopher D. | Article in Journal | | 1982 |
| Internal tamponage, hockey parturition and mixed athletics | Ó hÓgartaigh, Margaret | Article in Journal | | 2007 |
| International and modern ideals in Irish female medical missionary activity, 1937-1962 | Veale, Ailish | Article in Journal | | 2016 |
| International competition and the treatment of minorities : seventeenth century cases and general propositions | Clark, Samuel | Article in Journal | | 1998 |
| Internment and detention without trial in Northern Ireland 1971-1975 : ministerial policy and practice | Sprjut, R. J. | Article in Journal | | 1986 |
| Intolerance in Ireland, facts not fiction | Anonymous | Monograph or Collective Volume | Simpkin, Marshall | 1914 |
| Introduction | Kerr, Donal A. | Article in Book | | 1998 |
| Introduction | Gilley, SheridanSwift, Roger | Article in Book | | 1989 |
| Introduction | Rafferty, Oliver P. | Article in Book | | 2013 |
| Introduction | Murphy, James H. | Article in Book | | 2005 |
| Introduction | Begadon, Cormac ; Kelly, James E. | Article in Book | NA | 2022 |
| Introduction - college communities abroad: education, migration and Catholicism in early modern Europe | Chambers, Liam | Article in Book | | 2017 |
| Introduction : Father Luke Wadding - a multifaced Irishman in a global world | Binasco, Matteo | Article in Book | | 2020 |
| Introduction : Ireland church, state and society 1900–1975 | Breathnach, Ciara | Article in Journal | | 2008 |
| Introduction : the historiography of the diocese of Dublin | Kelly, James, 1959- | Article in Book | | 2000 |
| Introduction to volume 5 : religion and identity | O'Sullivan, Patrick | Article in Book | | 1996 |
| Introduction: Rome and Irish Catholicism in the Atlantic world. A Roman perspective | Binasco, Matteo | Article in Book | | 2019 |
| Inventario dei Registri Vaticani | Giusti, Martino | Monograph or Collective Volume | | 1981 |
| Ireland | Keogh, DermotO'Driscoll, Finín | Article in Book | | 1996 |
| Ireland & the European reformation | Bottigheimer, Karl S.Lotz-Heumann, Ute | Article in Journal | | 1998 |
| Ireland : a new phase in the conflict between nationalism and unionism | Patterson, Henry | Article in Journal | | 1989 |
| Ireland : the politics of enmity, 1789-2006 | Bew, Paul | Monograph or Collective Volume | Oxford University Press | 2007 |
| Ireland and Anglo-papal relations, 1880-5 | Woods, C. J. (Christopher John) | Article in Journal | | 1972 |
| Ireland and England | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Book | | 1971 |
| Ireland and Europe in 1825 : situating the Banims | Kilfeather, Siobhán | Article in Book | | 2006 |
| Ireland and Propaganda Fide, 1672-6 | | Article in Journal | | 1956 |
| Ireland and rape crises | McKay, Susan | Article in Journal | | 2007 |
| Ireland and the Catholic revival | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1950 |
| Ireland and the council of Trent | Carey, F. P. | Article in Journal | | 1945 |
| Ireland and the Ecclesiastical Titles Bill | Brady, J. | Article in Journal | | 1950 |
| Ireland and the English Reformation : state reform and clerical resistance in the diocese of Dublin, 1534-1590 | Murray, James | Monograph or Collective Volume | Cambridge University Press | 2009 |
| Ireland and the Great War : a social and political history | Gallagher, Niamh | Monograph or Collective Volume | Bloomsbury Academic | 2019 |
| Ireland and the Holy Land | Hoade, Eugene | Article in Journal | | 1952 |
| Ireland and the Holy See | Sheehy, Maurice P. | Article in Journal | | 1962 |
| Ireland and the Irish : a short history | Bottigheimer, Karl S. | Monograph or Collective Volume | Columbia University Press | 1982 |
| Ireland and the Popish Plot | Gibney, John, 1976- | Monograph or Collective Volume | Palgrave Macmillan | 2009 |
| Ireland and the theology of Human rights | Murray, Raymond, Msgr | Chapter in Book | | 2015 |
| Ireland and the Vatican : the politics and diplomacy of church-state relations, 1922-1960 | Keogh, Dermot | Monograph or Collective Volume | Cork University Press | 1995 |
| Ireland as a Catholic nation | Cahill, Edward | Monograph or Collective Volume | Irish Messenger Publications | 1939 |
| Ireland Before and After the Second Vatican Council | Daly, Mary E. | Article in Book | Oxford University Press | 2023 |
| Ireland Britain and mass literacy in nineteenth-century Europe | Lyons, Paddy | Article in Book | | 2006 |
| Ireland divided : the roots of the modern Irish problem | Hughes, Michael, 1942-1993 | Monograph or Collective Volume | St. Martin's Press | 1995 |
| Ireland in official print culture, 1800-1850 : a new reading of the Poor Inquiry | Ó Ciosáin, Niall | Monograph or Collective Volume | Oxford University Press | 2014 |
| Ireland in perspective | Barkley, John M. | Monograph or Collective Volume | British Council of Churches | 1989 |
| Ireland in the seventeenth century, or the Irish massacres of 1641-2, their causes and results. 2 vols. | Hickson, Mary | Monograph or Collective Volume | | 1884 |
| Ireland since 1800 : conflict and conformity | Hoppen, K. Theodore, 1941- | Monograph or Collective Volume | Longman | 1999 |
| Ireland under the Tudors : with a succinct account of the earlier history. 3 vols. | Bagwell, Richard | Monograph or Collective Volume | Longmans, Green | 1885 (v. I & II)
1890 (v. III) |
| Ireland's Catholics in the British state, 1850-1922 | O'Day, Alan | Article in Book | | 1992 |
| Ireland's clumsy transformation from confessional state to nation state | Miller, David W. | Article in Book | | 2016 |
| Ireland's debt to Newman | Hegarty, W. J. | Article in Journal | | 1945 |
| Ireland's empire : the Roman Catholic church in the English-speaking world, 1829-1914 | Barr, Colin | Monograph or Collective Volume | Cambridge University Press | 2020 |
| Ireland's first papal nuncio | Corish, Patrick J. | Article in Journal | | 1954 |
| Ireland's holy wars : the struggle for a nation's soul, 1500 - 2000 | Taaffe, Frank | Monograph or Collective Volume | Yale University Press | 2001 |
| Ireland's loyalty to the mass | Augustine,OFM | Monograph or Collective Volume | [s.n.] | 1938 |
| Ireland's Magdalen laundries : confronting a history not yet in the past | O'Rourke, MaeveSmith, James M. | Article in Book | | 2016 |
| Ireland's Magdalen laundries and the nation's architecture of containment | Smith, James M., 1966- | Monograph or Collective Volume | University of Notre Dame Press | 2007 |
| Ireland's man in the Holy Land : Father Jerome Murphy-O'Connor OP (1935-2013) | McConvery, Brendan | Article in Book | | 2015 |
| Ireland's Missions and Missionaries in the Twentieth Century | Bateman, Fiona | Article in Book | Oxford University Press | 2023 |
| Ireland's place in the history of the martyrology | Hennig, John | Article in Journal | | 1979 |
| Ireland's Role in the Foreign Policy of William III | Troost, Wouter | Article in Book | | 2007 |
| Ireland's spiritual empire : church dedications in Australia | Hennig, John | Article in Journal | | 1944 |
| Ireland, 1815-70 : emancipation, famine and religion | | Monograph or Collective Volume | Four Courts | 2011 |
| Ireland, Elizabeth I and the Counter-Reformation | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1961 |
| Ireland, England and the restoration of the Society of Jesus | Morrissey, Thomas J. | Article in Book | | 2003 |
| Ireland, Sheila and Newfoundland | Halpert, Herbert | Article in Book | | 1977 |
| Ireland, the pope and vocationalism : the impact of the encyclical Quadragesimo Anno | Mullarkey, Kieren | Article in Book | | 1999 |
| Ireland, the popish plot and 'British' history, 1678-81 | Gibney, John, 1976- | Article in Book | | 2004 |
| Ireland, the renaissance and the counter-reformation | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1967 |
| Ireland, the Vatican and the Cold War : the case of Italy, 1948 | Keogh, Dermot | Article in Journal | | 1991 |
| Ireland, the Vatican and the Cold War : the case of Italy, 1948 | Keogh, Dermot | Article in Journal | | 1991 |
| Ireton's siege of Waterford, July-August 1650 | McCarthy, Patrick | Article in Journal | | 2020 |
| Irish 'boursiers' at the Collège de Reims, Paris, 1650-1706 | Chambers, Liam | Article in Journal | | 2017 |
| Irish America | Byron, Reginald | Monograph or Collective Volume | Clarendon Press | 1999 |
| Irish Americans in American politics and the Catholic Church, 1870-1945 | Meagher, Thomas J. | Article in Book | | 2024 |
| Irish and Catholic : myth or realtiy? : another sort of Irish and the renewal of the clerical profession among Catholics in England | Connolly, Gerard | Article in Book | | 1985 |
| Irish and Catholic identity : ritual discourse and the formation of consciousness 1922-1967 | Fuller, Louise | Article in Book | | 2005 |
| Irish and Spanish cultural and political relations in the work of O'Sullivan Beare | Carroll, Clare | Article in Book | | 1999 |
| Irish archaeology and the poetry of Edmund Spenser : content and context | Herron, Thomas, 1968- | Article in Book | | 2009 |
| Irish bishop in a Moorish prison | Mooney, Canice | Article in Journal | | 1940 |
| Irish bishops and clergy in exile in mid-seventeenth century France | D'Ambrienes, René,Ó Ciosáin, Éamon | Article in Journal | | 2008 |
| Irish born secular priests in the diocese of Salford | Bracken, Robert | Monograph or Collective Volume | N. Richardson | 1984 |
| Irish cardinals | Ní Chearbhaill, Maire | Monograph or Collective Volume | Elton Press | 1983 |
| Irish Catholic chaplains in the British armed forces during the First World War | O'Neill, Hugh | Article in Journal | | 2011 |
| Irish Catholic Chaplains in WWI | Casey, Gerard | Article in Journal | | 2015 |
| Irish Catholic Culture Before and After Vatican II | Fuller, Louise | Article in Book | Oxford University Press | 2024 |
| Irish Catholic culture in the nineteenth century : a study in perjury | Edwards, Owen Dudley | Article in Book | | 2013 |
| Irish Catholic directories | Altholz, Josef Lewis, 1933- | Article in Journal | | 1992 |
| Irish catholic education in Victorian Toronto : an ethnic response to urban conformity | Nicolson, Murray W. | Article in Journal | | 1984 |
| Irish Catholic education, 1669-85 | Howard, Leonard | Article in Journal | | 1969 |
| Irish Catholic fiction of the early twentieth century : the power of imagery | Wilson, Ann | Article in Journal | | 2014 |
| Irish Catholic genesis of Lowell | O'Dwyer, George F. | Monograph or Collective Volume | Lowell Museum Corporation | 1981 |
| Irish Catholic genesis of Lowell | O'Dwyer, George F. | Monograph or Collective Volume | Sullivan Bros. | 1920 |
| Irish Catholic identities | | Monograph or Collective Volume | Manchester University Press | 2013 |
| Irish Catholic identity in 1870s Otago, New Zealand | Breathnach, Ciara | Article in Journal | | 2013 |
| Irish Catholic identity in 1870s Otago, New Zealand | Breathnach, Ciara | Article in Journal | | 2013 |
| Irish Catholic Identity in 1870s Otago, New Zealand | Breathnach, Ciara | Article in Journal | | 2013 |
| Irish Catholic loyalty and identity in the British Empire : the Ancient Order of Hibernians in Canada, 1878–1925 | Tait, Jackson | Article in Journal | | 2020 |
| Irish Catholic marriages in the London Lying-In Hospital records | Anonymous | Article in Journal | | 1998 |
| Irish Catholic marriages in the London Lying-In Hospital records | Anonymous | Article in Journal | | 1998 |
| Irish Catholic politics in Ontario | Cottrell, Michael | Article in Book | | 1988 |
| Irish Catholicism | Jordan, John | Article in Journal | | 1983 |
| Irish Catholicism and science: from 'Godless colleges' to the 'Celtic Tiger' | O'Leary, Don | Monograph or Collective Volume | Cork University Press | 2012 |
| Irish Catholicism and the Great Famine | Miller, David William, 1940- | Article in Journal | | 1975 |
| Irish Catholicism and the historian [review article] | Miller, David William, 1940- | Article in Journal | | 1986 |
| Irish Catholicism in Britain | Gilley, Sheridan | Article in Book | | 1992 |
| Irish Catholicism in Liverpool : the 1920s and 1930s | Boyce, Frank | Article in Book | | 1993 |
| Irish Catholicism in Sunderland in the nineteenth century | Fetherston, Vivienne | Article in Journal | | 2002 |
| Irish Catholicism in the diaspora : the case of the United States | Doyle, David Noel | Article in Book | | 2002 |
| Irish Catholicism since 1950 : the undoing of a culture | Fuller, Louise | Monograph or Collective Volume | Gill & Macmillan | 2002 |
| Irish Catholics : traditions and transition | Ó Ríordáin, J. | Monograph or Collective Volume | Veritas | 1980 |
| Irish Catholics and freedom since 1916 | Fennell, Desmond | Monograph or Collective Volume | Dominican Publications | 1984 |
| Irish Catholics and French Creoles : ethnic struggles within the Catholic church in New Orleans, 1835-1920 | Doorley, Michael | Article in Journal | | 2001 |
| Irish Catholics and the bible in the nineteenth century | Rafferty, Oliver P. | Article in Book | | 2013 |
| Irish Catholics and the British labour movement : a study with particular reference to London, 1918-70. | McDermott, Michael | Thesis | | 1970 |
| Irish Catholics and the French revolution | O'Flaherty, Eamon | Article in Book | | 1990 |
| Irish Catholics and the legislative union, 1800 | Burke, T. | Article in Journal | | 1944 |
| Irish Catholics and the Manitoba school crisis, 1885-1921 | Davis, Richard P. | Article in Journal | | 1973 |
| Irish Catholics and the parliamentary franchise, 1692-1728 | Simms, J. G. (John Gerald) | Article in Journal | | 1960 |
| Irish Catholics and the political culture of Upper Canada. The case of the 'Toronto Mirror', 1837-1865 | Fahey, Curtis | Article in Book | | 1988 |
| Irish Catholics before the famine : patterns and questions | Corish, Patrick J. | Article in Journal | | 1986 |
| Irish Catholics in a yankee town : a report about Brattleboro, 1847-1898 | Anonymous | Article in Journal | | 1976 |
| Irish Catholics in Belfast and Glasgow in the early twentieth century : connections and comparisons | Hepburn, Anthony C. | Article in Book | | 1995 |
| Irish Catholics in south east Lancashire : a conflict of loyalties? | Flinn, A. | Article in Journal | | 2000 |
| Irish Catholics in the building of the Ocmulgee and Flint railroad | Chalker, Fussell | Article in Journal | | 1971 |
| Irish Catholics in the West of Scotland in the Nineteenth Century : despised by Scottish workers and controlled by the Church? | Mitchell, Martin J. | Article in Book | | 2008 |
| Irish Catholics promoting their mission to convert the pagan world, 1900-1960 | Finnegan, Michael | Thesis | | 2001 |
| Irish Catholics, French Cartesians : Irish relations to Cartesianism in France, 1671-1726 | Chambers, Liam | Article in Book | | 2004 |
| Irish Christians and the struggle for a just society | Lane, Dermot A. | Article in Book | | 2003 |
| Irish church : architecture in the era of Vatican II | Hurley, Richard | Monograph or Collective Volume | Dominican Publications | 2001 |
| Irish Church Records | Sharkey, Joan | Article in Journal | | 2012 |
| Irish church records : their history, availability and use in family and local history research | | Monograph or Collective Volume | Flyleaf Press | 2001 |
| Irish church records : their history, availability and use in family and local history research | | Monograph or Collective Volume | Flyleaf Press | 1992 |
| Irish church-building : popery, Pugin and the Protestant ascendancy | Sheehy, Jean | Article in Book | | 1995 |
| Irish civil society : from church to media domination | Inglis, Tom | Article in Book | | 2000 |
| Irish civil society and the Great War, 1914-1918 | Gallagher, Niamh Aislinn | Thesis | | |
| Irish clerics and French politics of grace | O'Connor, Priscilla | Article in Book | | 2003 |
| Irish clerics in France in the seventeenth and eighteenth centuries : a statistical study | Brockliss, Laurence W. B.Ferté, Patrick | Article in Journal | | 1987 |
| Irish college at Salamanca - last days | Browne, Michael | Article in Journal | | 1971 |
| Irish College, Rome : Kirby papers | Corish, Patrick J. | Article in Journal | | 1974 |
| Irish College, Rome : Kirby papers | Corish, Patrick J. | Article in Journal | | 1975 |
| Irish colleges abroad | Wall, Thomas | Article in Journal | | 1947 |
| Irish Collegians in Spanish Service (1560–1803) | O’Connor, Thomas | Article in Book | | 2018 |
| Irish cultural contributions in early New York | Purcell, Richard J. | Article in Journal | | 1937 |
| Irish De la Salle brothers in Christian education | Towey, J. | Monograph or Collective Volume | De La Salle Congregation | 1980 |
| Irish diaspora Catholicism in North America | Doyle, David | Article in Book | | 2013 |
| Irish diocesan priests in southern Nigeria, 1920-42 | Cooke, Colm M., Rev. | Thesis | | 1971 |
| Irish Dominicans at Lisbon before 1700 : a biographical register | | Article in Journal | | 2000 |
| Irish Dominicans at Louvain before 1700 : a biographical register | | Article in Journal | | 2001 |
| Irish ecclesiastical history and the papal archives : 2, the archives of the Sacred Congregation de Propaganda Fide | Millett, Benignus | Article in Journal | | 1956 |
| Irish ecclesiastical history and the papal archives : 3, the archives of the Nunziatura di Fiendra | Giblin, Cathaldus | Article in Journal | | 1956 |
| Irish ecclesiastical history and the papal archives, introduction | Corish, Patrick J. | Article in Journal | | 1956 |
| Irish ecclesiastical history since 1500 | Corish, Patrick J. | Article in Book | | 1981 |
| Irish education : a history of educational institutions | Atkinson, Norman | Monograph or Collective Volume | Figgis | 1969 |
| Irish education and the legacy of O’Connell | Fleming, BrianHarford, Judith | Article in Journal | | 2016 |
| Irish education transformed | Andrews, P. | Article in Journal | | 1997 |
| Irish emigrant and missionary education : a history | Murphy, Daniel | Monograph or Collective Volume | Four Courts | 2000 |
| Irish emigration to Castille in the opening years of the seventeenth century | O'Scea, Ciaran | Article in Book | | 2004 |
| Irish entrants to the Congregation of the Mission, 1625-60: prosopography and sources | Forrestal, Alison | Article in Journal | | 2009 |
| Irish entries in the baptism and death registers of the parochial archive of San Justo y Pastor, Madrid (1609-1659) | Hernanz Elvira, Óscar | Article in Journal | | 2017 |
| Irish episcopal meetings, 1788-1882 : a juridico-historical study | Cannon, Sean | Monograph or Collective Volume | Pontifical University | 1979 |
| Irish exiles in Catholic Europe | Giblin, Cathaldus | Article in Book | | 1968 |
| Irish fondations and boursiers in early modern Paris, 1682-1793 | Chambers, Liam | Article in Journal | | 2008 |
| Irish form of preparation for Sunday mass in the eighteenth century | Hawkes, William | Article in Journal | | 1955 |
| Irish Franciscan archbishop of Dublin : Thomas Fleming, 1623-1655 | Barrett, Fergus | Article in Journal | | 1941 |
| Irish Franciscan bishops | Mooney, Canice | Article in Journal | | 1949 |
| Irish Franciscan mission to Scotland, 1619-46 : documents from Roman archives | | Monograph or Collective Volume | Assisi Press | 1964 |
| Irish Franciscan networks at home and aborad, 1607-1640 | O'Connor, Thomas | Article in Book | | 2010 |
| Irish Franciscan provincials | Mooney, Canice | Article in Journal | | 1963 |
| Irish Franciscan Seraphic Colleges - particularly Multyfarnham and Gormanstown | Conlan, Pat, OFM | Article in Journal | | 2015 |
| Irish Franciscans and the Santiago Province of Spain | Hazard, Benjamin | Article in Book | NA | 2020 |
| Irish Government lists of Catholic personnel, c.1613 [with index] | Mac Cuarta, Brian | Article in Journal | | 2015 |
| Irish history and papal archives | Corish, Patrick J. | Article in Journal | | 1954 |
| Irish identity and the future of Catholicism | Coll, Niall | Article in Book | | 2013 |
| Irish immigrants and radical movements in the West of Scotland in the early nineteenth century | McCaffrey, J. F. | Article in Journal | | 1988 |
| Irish immigrants and Scottish radicalism 1880-1906 | Wood, Ian S. | Article in Book | | 1978 |
| Irish immigrants in Scotland : their priests, politics and parochial life | Walker, W. M. | Article in Journal | | 1972 |
| Irish immigration and settlement in a Catholic city : Quebec, 1842-61 | Grace, Robert J. | Article in Journal | | 2003 |
| Irish immigration and the Canadian church before the middle of the 19th century | Cooper, John Irwin | Article in Journal | | 1955 |
| Irish immigration and the Catholic 'Welsh District' 1840-1850 | O'Leary, Paul | Article in Book | NA | 1988 |
| Irish immigration into mid-nineteenth-century Hull | Gibbons, Jo | Article in Book | | 1999 |
| Irish influences in early Melbourne | Strauss, Valda | Article in Journal | | 1996 |
| Irish intellectuals and independent Czechoslovakia in the Interwar period : reflections in Catholic journals | Zách, Lili | Article in Book | Peter Lang | 2014 |
| Irish Irenics | Boyd, Andrew, 1921- | Article in Journal | | 1992 |
| Irish Jansenists, 1600-70 : religion and politics in Flanders, France, Ireland and Rome | O'Connor, Thomas | Monograph or Collective Volume | Four Courts | 2008 |
| Irish Jesuit Annual Letters, 1604-1674 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2019 |
| Irish Jesuit archives | O'Donoghue, Fergus | Article in Journal | | 1986 |
| Irish Jesuits among the wild Batonga | McSweeney, Joseph | Monograph or Collective Volume | Irish Messenger Publications | 1954 |
| Irish Jesuits and the evolution of religious controversy: an episode from the 1630s | Jackson, Brian | Article in Book | | 2022 |
| Irish Labour in a Time of Revolution | Newsinger, John | Article in Journal | | 2002 |
| Irish links to Charleville in the 17th century | Ó hAnnracháin, Eoghan | Article in Journal | | 2016 |
| Irish links with Bishop Challoner | Brady, John, d.1963 | Article in Journal | | 1946 |
| Irish links with Compostella | Hayes, Richard Francis | Article in Journal | | 1948 |
| Irish links with Santa Maria dell'Anima in Rome | Ó Fearghail, Fearghus | Article in Journal | | 2009 |
| Irish material in Fondo Santa Sede, Madrid | Mac Curtain, Benvenuta | Article in Journal | | 1963 |
| Irish migrants and the recruitment of Catholic sisters in Glasgow, 1847-1878 | Lehoe, S. Karly | Article in Book | | 2009 |
| Irish migration and settlement in Victorian England : a small-town perspective | Herson, John | Article in Book | | 1989 |
| Irish missionaries in Bengal, 1834-59 | Finegan, Francis | Article in Journal | | 1963 |
| Irish missionaries in Liberia | Concannon, Helena | Article in Journal | | 1947 |
| Irish missions to Africa | Needham, Ciaran | Article in Journal | | 1961 |
| Irish names in the Malines ordination registers, 1602-1794 | Jennings, Brendan | Article in Journal | | 1952 |
| Irish names in the Ordination registers of the diocese of Ghent, 1559-1802 | Nilis, Jeroen | Article in Journal | | 2006 |
| Irish nationalism : a history of its roots and ideology | Cronin, Seán | Monograph or Collective Volume | Irish Academic Press | 1980 |
| Irish nationalism and Irish Catholicism: a study in cultural identity | McCaffrey, Lawrence J., 1925- | Article in Journal | | 1973 |
| Irish nationalism and the British state : from repeal to revolutionary nationalism | Jenkins, Brian A. | Monograph or Collective Volume | McGill-Queen's University Press | 2006 |
| Irish nationalism and the demise of the Papal States, 1848-71 | Ramón, Marta | Article in Book | | 2014 |
| Irish newspapers and the Spanish Civil War | McGarry, Fearghal | Article in Journal | | 2002 |
| Irish oblate and naval chaplain : Father Stewart Phelan and the Battle of Jutland | Hagerty, James | Article in Book | | 2015 |
| Irish Orphans and the Politics of Domestic Authority | Clark, Anna | Article in Book | | 2009 |
| Irish parliamentary elections and the influence of the Catholic vote, 1801-20 | Jupp, Peter, 1940-2006 | Article in Journal | | 1967 |
| Irish peasant society | Connell, Kenneth Hugh | Monograph or Collective Volume | Clarendon Press | 1968 |
| Irish peasant society : four historical essays | Connell, Kenneth Hugh | Monograph or Collective Volume | Irish Academic Press | 1996 |
| Irish pensioners of the French clergy, 1686-1778 | Finegan, Francis | Article in Journal | | 1966 |
| Irish pilgrimage : holy wells and popular Catholic devotion | Carroll, Michael P. | Monograph or Collective Volume | Johns Hopkins University Press | 1999 |
| Irish pilgrimage : the different tradition | Nolan, Mary Lee | Article in Journal | | 1983 |
| Irish poetry and the clergy | Ó Fiaich, Tomás | Article in Book | | 1975 |
| Irish politics in Manchester, 1890-1914 | Fielding, Steven | Article in Journal | | 1988 |
| Irish politics on parade : the clergy, national societies, and St. Patrick's Day processions in nineteenth-century Montreal and Toronto | Trigger, Rosalyn | Article in Journal | | 2004 |
| Irish preachers and confessors in the archdiocese of Malines, 1607-1794 | | Article in Journal | | 1960 |
| Irish priests and students in revolutionary France | Swords, Liam | Article in Book | | 1997 |
| Irish priests in Spanish Natchez | Holmes, Jack D. L. | Article in Journal | | 1967 |
| Irish priests in the diocese of Quebec in the nineteenth century | O'Gallagher, Marianna | Article in Journal | | 1983 |
| Irish priests in the Highlands : judicial evidence from Argyll | Macdonald, Fiona A. | Article in Journal | | 1995 |
| Irish priests in the north-east in the eighteenth century | Nicholson, W. J. | Article in Journal | | 1984 |
| Irish priests in the north-east in the nineteenth century | Nicholson, W. J. | Article in Journal | | 1985 |
| Irish priests in the United States : a vanishing subculture | Smith, William L. | Monograph or Collective Volume | University Press of America | 2004 |
| Irish priests transported under the Commonwealth | | Article in Journal | | 1949 |
| Irish printing in the early seventeenth century | Gillespie, Raymond, 1955-2024 | Article in Journal | | 1988 |
| Irish Protestants in the Theatre of the World: The Apostolic Hospice for the Converting, Rome, 1677–1745 | Carroll, Clare Lois | Article in Book | | 2019 |
| Irish public opinion and the Risorgimento, 1859-60 | O'Brien, Jennifer | Article in Book | | 2014 |
| Irish Question or Irish Connection? Irish Catholics in North America through the “Roman” lens | Sanfilippo, Matteo | Article in Book | | 2019 |
| Irish radicalism and the Roman Catholic church in Quebec and Ireland, 1833-1834 : O'Callaghan and O'Connell compared | Slattery, Maureen | Article in Journal | | 1997 |
| Irish religious opinion on the American Civil War | Hernon, Joseph M. | Article in Journal | | 1964 |
| Irish saints for boys and girls | Curtayne, Alice | Monograph or Collective Volume | Talbot Press | 1955 |
| Irish saints in a Regensburg litany | Ó Riain, PádraigÓ Riain-Raedel, Dagmar | Article in Book | | 2015 |
| Irish Scotists at St Isidore's College, Rome in the seventeenth century | Millett, Benignus | Article in Book | | 1968 |
| Irish seminaries in the eighteenth century | Dowling, Edward | Article in Journal | | 1941 |
| Irish Sisters of Mercy in the Crimean war | Bolster, Ellen | Thesis | | 1959 |
| Irish soldiers and the Irish College in Paris, 1706-1791 | Walsh, Micheline | Article in Book | | 1978 |
| Irish students in the Netherlands 1650-1750 | Mijers, Esther | Article in Journal | | 2005 |
| Irish students of medicine at Leiden | Froggatt, Peter | Article in Book | | 1992 |
| Irish students ordained in Rome (1625-1710) | Egan, Bartholomew, OFMGiblin, CathaldusMcGrath, Cuthbert | Article in Journal | | 1943 |
| Irish studies, cultural pluralism and the peace process | Finlay, Andrew | Article in Journal | | 2007 |
| Irish swordsmen in Flanders, 1586-1610. 1, Stanley's regiment, 1586-1587; 2, Independent Irish companies and the regiment of Henry O'Neill. | Jennings, Brendan | Article in Journal | | 1948 |
| Irish textures in American Catholicism | McCaffrey, Lawrence J., 1925- | Article in Journal | | 1992 |
| Irish travellers at Knock : contesting sacred space | Brownlee, Attracta M. | Article in Journal | | 2011 |
| Irish tridentine catholicism in Victorian Toronto : vessel for ethno-religious persistence | Nicolson, Murray W. | Article in Journal | | 1983 |
| Irish Victorian churches : denominational distinctions | Rowan, Alistair | Article in Book | | 1994 |
| Irish votes and Yankee cotton : the constitution of 1853 | O'Connor, Thomas H. | Article in Journal | | 1983 |
| Irish women and the creation of modern Irish Catholicism | Delay, Cara | Monograph or Collective Volume | Manchester University Press | 2019 |
| Irish women in religious orders, 1530-1700 : suppression, migration and integration | McShane, Bronagh Ann | Monograph or Collective Volume | Boydell Press | 2022 |
| Irish women religious and their convent high schools in nineteenth-century Australia | MacGinley, Rosa | Article in Journal | | 2010 |
| Irish women's athletics and the Olympic games | Naughton, Lindie | Article in Journal | | 2012 |
| Irish women’s involvement in Birmingham’s union of Catholic mothers, 1948–1978 | O'Brien, Sarah | Article in Journal | | 2013 |
| Irish workers on Tyneside in the 19th century | MacDermott, T. P. | Article in Book | | 1977 |
| Irish, Catholic and scouse : the history of the Liverpool-Irish, 1800-1939 | Belchem, John | Monograph or Collective Volume | Liverpool University Press | 2007 |
| Irish, Scottish and Welsh responses to centralisation, c.1530-c.1640 : a comparative perspective | Canny, Nicholas P. | Article in Book | | 1995 |
| Irish-American attitudes and the americanization of the English-language parochial school | Weisz, Howard | Article in Journal | | 1972 |
| Irish-American Catholic conservatives and Northern Ireland | McCarthy, John | Article in Journal | | 1987 |
| Irish-American Catholics and the quest for respectability in the coming of the Great War, 1900-1917 | Rowland, Thomas J. | Article in Journal | | 1996 |
| Irish-American geography of Catholics surnamed O'Sullivan | O'Sullivan, Patrick | Article in Journal | | 1988 |
| Irish-American teachers and the struggle over American urban public education, 1890-1920 : a preliminary look | Nolan, Janet | Article in Journal | | 1992 |
| Irish-Americans : identity and assimilation | Fallows, Marjorie R. | Monograph or Collective Volume | Prentice-Hall | 1979 |
| Irish-Americans and the 1916 election : an episode in immigrant adjustment | Cuddy, Edward | Article in Journal | | 1969 |
| Irish-Americans and the fight for treaty ratification | Maxwell, Kenneth R. | Article in Journal | | 1967 |
| Irish-Americans, native rights and national empires | Doyle, David Noel | Monograph or Collective Volume | Arno P. | 1979 |
| Irish-born champion of the Mexican-Americans | Weber, Francis J. | Article in Journal | | 1970 |
| Irish-born priests who studied in the American College of Louvain between 1860 and 1971 | Canning, Joe | Article in Journal | | 2019 |
| Irish-born secular priests in Scotland, 1829-1979 | Canning, B. J. (Bernard J.) | Monograph or Collective Volume | The author | 1979 |
| Irish-language sources for Irish Catholic identity since the early modern period : a brief survey | Ó Ciardha, Éamonn | Article in Book | | 2013 |
| Irishman or English soldier? : the case of a Waterford man enlisting in the 16th (Irish) Division in 1915 | Dooley, Thomas P. | Thesis | | |
| Irishmen or English soldiers? The times and world of a southern Catholic man (1876-1916) enlisting in the British army during the First World War | Dooley, Thomas P. | Monograph or Collective Volume | Liverpool University Press | 1995 |
| Irishmen ordained at Lisbon, 1660-1739 | Fenning, Hugh | Article in Journal | | 1993 |
| Irishmen ordained at Lisbon, 1740-1850 | | Article in Journal | | 1994 |
| Irishmen ordained at Prague 1628-1700 : additions and corrections to Matthäus Hösler's list | Millett, Benignus | Article in Journal | | 1998 |
| Irishmen ordained at Prague, 1629-1786 | Hösler, Matthäus | Article in Journal | | 1991 |
| Irishmen ordained at Rome, 1572-1697 | | Article in Journal | | 2005 |
| Irishmen ordained at Rome, 1698-1759 | | Article in Journal | | 1996 |
| Irishmen ordained at Rome, 1760-1800 | | Article in Journal | | 1997 |
| Irlanda del Norte : historia del conflicto | Sierra, Luis Antonio | Monograph or Collective Volume | Silex | 1999 |
| Irlanda en Alcalá : la comunidad Irlandesa en la universidad de Alcalá y su proyección Europea, 1579-1785 | Recio Morales, Óscar | Monograph or Collective Volume | Fundación Colegio del Rey | 2004 |
| Irlanda y la monarquía hispánica : Kinsale 1601-2001 - guerra, política, exilio y religión | | Monograph or Collective Volume | Universidad de Alcalá. Consejo Superior de Investigaciones Científicas | 2002 |
| Irlandskaya politika Yakova II i predposylki 'Slavnoi revolutsii v Anglii | Telegina, E. F. | Monograph or Collective Volume | Izd. Gor 'Kovskogo universiteta | 1980 |
| Is iad is abhar glóirithe dom | Ó Láimhín, Peadar | Article in Book | | 2000 |
| Isabella Croke : a nurse for the Catholic cause during the Crimean War | Doona, Mary Ellen | Article in Book | | 1997 |
| Island of slow division : the religious situation | Gallagher, Michael Paul, SJ | Article in Journal | | 1986 |
| It was in human nature to love one’s native land and make sacrifices for it’ | Wooding, M. Jonathan | Article in Journal | | 2007 |
| Italy and the Holy See | Keogh, AoifeKeogh, Dermot | Article in Book | | 2013 |
| J. G. McGarry - a reminiscence | Meehan, Molaise | Article in Journal | | 1981 |
| J. K. L.'s letter on the union of churches | McNamee, Brian | Article in Journal | | 1969 |
| J. L. P. O’Hanly, Irish Catholic nationalism, and Canadian state colonialism in the nineteenth century | | Article in Journal | | 2014 |
| J.C.R. Lardner MP, a forgotton Middle-Irelander | McRoe, Malachy | Article in Journal | | 2014 |
| J.J. O'Kelly ('Sceilg') and the Catholic Bulletin: cultural considerations, Gaelic, religious and national, c.1898-1926 | Murphy, Brian | Thesis | | 1987 |
| Jacobite births, marriages and deaths in the parochial registers of Bar-le-Duc (1713-1715) | Richard-Maupillier, Frédéric | Article in Journal | | 2017 |
| Jacobitism and the third and fourth earls of Antrim | McDonnell, Hector | Article in Journal | | 1985 |
| Jacobitism in eighteenth-century Ireland : a Munster perspective | Dickson, David | Article in Journal | | 2004 |
| Jacobitism, Catholicism and the Irish Protestant elite, 1700-1710 | Doyle, Thomas | Article in Journal | | 1997 |
| James Alypius Goold, O.S.A., first archbishop of Melbourne | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1988 |
| James Anderson and the Drogheda pilgrimage to Knock 1880 | O'Donovan, Iggy | Article in Journal | | 1998 |
| James Archer and the Jesuit mission to Ireland, 1597-1602 | Morrissey, Thomas | Thesis | | 1970 |
| James Archer of Kilkenny : an Elizabethan Jesuit : first rector of the Irish College at Salamanca and ally of the great Hugh O'Neill | Morrissey, Thomas J. | Monograph or Collective Volume | Studies, Special Publication | 1979 |
| James Augustine Anderson, O.S.A., 1837-1903 | Dwyer, Catherine Mary | Article in Journal | | 1974 |
| James Browne, Bishop of Kilmore, 1829-65 | Kerr, Donal A. | Article in Journal | | 1983 |
| James Caulfield Bishop of Ferns 1786-1814 | Corish, Patrick J. | Article in Journal | | 1996 |
| James Charles McGuigan : first cardinal from English Canada | McGuigan, Peter | Article in Book | | 1988 |
| James Dalton : mayor of Orange and papal knight | Anonymous | Article in Journal | | 1988 |
| James Dixon and Jeremiah O'Flynn, two prefects apostolic in Australia | Giblin, Cathaldus | Article in Journal | | 1983 |
| James Doyle (J.K.L.), bishop of Kildare and Leighlin, and the Roman Catholic relief movement, 1822-5 | Power, Conleth J. | Thesis | | 1968 |
| James Duffy and Catholic nationalism | Loeber, RolfStouthamer-Loeber, Magda | Article in Book | | 2011 |
| James Duhig | Boland, T. P. | Monograph or Collective Volume | University of Queensland Press | 1986 |
| James Gallagher's Irish sermons (1736) | Mac Murchaidh, Ciarán | Article in Book | | 2013 |
| James II : a study in kingship. | Miller, John | Monograph or Collective Volume | | 1989 |
| James Joyce and the soul of Irish Jesuitry | Dening, Greg | Article in Journal | | 2008 |
| James Martineau and the Catholic spirit amid the tensions of Dublin, 1828-1832 | Waller, Ralph | Article in Book | | 1989 |
| James Martineau and the Catholic spirit amid the tensions of Dublin, 1828-32 | Walker, Ralph S. | Article in Book | | 1989 |
| James Murphy, bishop of Clogher, 1801-24 | Ó Dufaigh, Seosamh | Article in Journal | | 1968 |
| James Naughton, Bishop of Killala, 1911-1950 : the man, his life, in particular his laws | Rogan, Eddie | Article in Journal | | 1992 |
| James Ussher and his Irish manuscripts | Cunningham, BernadetteGillespie, Raymond, 1955-2024 | Article in Journal | | 2005 |
| James Ussher, archbishop of Armagh | Knox, Robert Buick | Monograph or Collective Volume | | 1967 |
| James Ussher, Francis Barnaby and Blessed Conor O'Devany, January-February 1612 | Millett, Benignus | Article in Journal | | 1996 |
| James Vincent Cleary (1828-1898) | O'Neill, Assumpta | Article in Journal | | 2000 |
| Jeers, Jingo and Jesuits. Britishness, Edmund Burke, and Crises of Empire in eighteenth-century Britain | Pettinato, Jonathan | Article in Journal | | 2015 |
| Jenkinstown oratory | Brennan, John | Article in Journal | | 1993 |
| Jeremiah Donovan's translation of the Roman catechism | Ó Súilleabháin, Pádraig | Article in Journal | | 1970 |
| Jeremiah John Purcell O'Reily, O.F.M. Cap. : apostle in Wellington, New Zealand | Duggan, Eileen | Article in Journal | | 1959 |
| Jesuit conversions in Wentworth’s Ireland: the Slingsby family, County Cork, in the 1630s | Mac Cuarta, Brian | Article in Book | | 2022 |
| Jesuit Finances in Restoration Ireland: a relational network analysis | Foerster, Martin
| Article in Journal | | 2021 |
| Jesuit parish mission memoirs 1863-76, part III | Laheen, Kevin A. | Article in Journal | | 2000 |
| Jesuitische Finanzen im Irland der Restaurationsepoche | Foerster, Martin | Article in Journal | | 2016 |
| Jesuits in Hong Kong, South China, and beyond, 1926-2006 | Morrissey, William J. | Monograph or Collective Volume | Xavier Publishing Association | 2008 |
| Jewish and Catholic Irish Relations : The Glasgow Waterfront c.1880-1914 | Kenefick, William | Article in Journal | | 2006 |
| John and James Toohey : brewers | Anonymous | Article in Journal | | 1988 |
| John Austin SJ (1717-84), the first Catholic Cartesian? | Schmutz, Jacob | Article in Book | | 2020 |
| John Bagwell: politician and landlord (1811-1883) | O'Donnell, Seán | Article in Journal | | 2017 |
| John Boylan, influential nineteenth-century Kilmore priest | Sullivan, Tom | Article in Journal | | 2012 |
| John Burke (De Burgh), archbishop of Tuam, 1647-1667 | Claffey, Tony | Article in Journal | | 2014 |
| John Butler, baron of Dunboyne and bishop of Cork 1763-1787 | O'Mahony, Eoin | Article in Journal | | 1969 |
| John Callaghan and the controversies among the Irish in Paris, 1648-54 | Corish, Patrick J. | Article in Journal | | 1954 |
| John Cardinal McCloskey | Mullan, Desmond | Article in Journal | | 1979 |
| John Carroll and Louisiana | Melville, Annabelle M. | Article in Journal | | 1978 |
| John Charles McQuaid : archbishop of Dublin, 1940-72 | McMahon, Deirdre | Article in Book | | 2000 |
| John Charles McQuaid : ruler of Catholic Ireland | Cooney, John | Monograph or Collective Volume | O'Brien Press | 1999 |
| John Charles McQuaid and the failure of youth sodalities, 1956-60 | Holohan, Carole | Article in Book | Columba | 2012 |
| John Colgan (1592-1992) | Byrne, Connall | Monograph or Collective Volume | The author | 1992 |
| John Colgan as editor | Bieler, Ludwig | Article in Journal | | 1948 |
| John Copinger and the counter-reformation : the writings of a forgotten exile from Ireland | Highley, Christopher | Article in Journal | | 2001 |
| John Elmsley and the rise of Irish catholic social action in Victorian Toronto | Nicolson, Murray W. | Article in Journal | | 1984 |
| John England of Charleston - Carlow's greatest Corkman | Lynch, Martin | Article in Journal | | 1999 |
| John Garzia, a noted priest-catcher and his activities, 1717-23 | MacGrath, Kevin. | Article in Journal | | 1949 |
| John Gorman (1820-1846) | Mitchell, Kilian J. | Article in Journal | | 2001 |
| John Henry Newman : centenary essays | Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Burns & Oates | 1945 |
| John Henry Newman and Frank Duff | Kennedy, F. | Monograph or Collective Volume | Praedicanda Publications | 1982 |
| John Henry Newman and the Roman oratory | Foley, Brian C. | Article in Journal | | 2000 |
| John Henry Newman et l'Universite catholique d'Irlande. Parts 1-2 | Abalain, Hervé | Article in Journal | | 1981 |
| John Henry Newman's Breviary | Ó Muirí, Réamonn | Article in Journal | | 2013 |
| John Hogan and radical Irish nationalism, 1916-1930 : a study in political Catholicism | Keogh, Dermot | Article in Book | | 2008 |
| John Hogan and the Catholic religious revival | Turpin, John | Article in Journal | | 1979 |
| John Hughes and a catholic response to slavery in antebellum America | Sharron, W. B. | Article in Journal | | 1972 |
| John Hume and the SDLP : impact and survival in Northern Ireland | Murphy, Gerard | Monograph or Collective Volume | Irish Academic Press | 1998 |
| John Ireland and the American Catholic church | O'Connell, Marvin R. | Monograph or Collective Volume | Minnesota University Press | 1988 |
| John Johnston, 1846-1913: Dundalk Poor Law Guardian, 1877; Justice of the Peacer, 1893; and Louth County Councillor, 1899 | Johnston, Don | Article in Journal | | 2014 |
| John Joseph Hughes (1797-1864), first archbishop of New York | Canning, B. J. (Bernard J.) | Article in Journal | | 1964 |
| John Kavanagh as hedge school wonder boy | Noël, Jean C. | Article in Journal | | 1982 |
| John Kent's report on the state of the Irish mission, 1742 | | Article in Journal | | 1966 |
| John Lynch and renaissance humanism in Stuart Ireland: Catholic intellectuals, Protestant noblemen and the Irish 'Respublica' | Campbell, Ian W. S. | Article in Journal | | 2010 |
| John MacEvilly, 1816-1902 | Bane, Liam | Thesis | | 1979 |
| John MacHale and John MacEvilly : conflict in the 19th century Catholic hierarchy | Bane, Liam | Article in Journal | | 1984 |
| John MacHale, archbishop of Tuam | Costello, Nuala | Monograph or Collective Volume | Talbot Press | 1939 |
| John MacHale, Henry Cooke and the curious demise of the confessional state in Ireland | Miller, David W. | Article in Book | | 2010 |
| John McColgan (1592-1992) | Byrne, Connall | Article in Journal | | 1992 |
| John McEnery - Limerick priest - palaeontologist, 1796-1841 | Newman, Jeremiah | Article in Book | | 1967 |
| John McHale and John MacEvilly : conflict in the nineteenth- century Catholic hierarchy | Bane, Liam | Article in Journal | | 1984 |
| John McHale, 1791-1881 | McHale, Edward | Article in Book | | 1983 |
| John McHale, Archbishop of Tuam | Lyons, John | Article in Journal | | 1984 |
| John Miley and the crisis at the Irish College, Paris, in the 1850s | Moran, Gerard | Article in Journal | | 1996 |
| John Milner, history and Ultramontanism | Leighton, Cadoc | Article in Journal | | 2010 |
| John Murphy and educational publishing in the early nineteenth century | Cronin, Neil | Article in Journal | | 2021 |
| John O'Kane (Senior), farmer. Maine townland, Drumsurn, Co. Derry, 1781-1865 | Bryson, P.Higgins, M. A. | Article in Journal | | 2007 |
| John Ponce's response to Kenelm Digby's 'A discourse concerning infallibility in religion' (Paris, 1652) | | Article in Journal | | 2012 |
| John Punch, Scotist holy war, and the Irish Catholic revolutionary tradition in the seventeenth century | Campbell, Ian W. S. | Article in Journal | | 2016 |
| John Redmond and Irish Catholic loyalism | McConnel, James | Article in Journal | | 2010 |
| John Reilly and the San Patricios | Lavelle, Rory | Article in Journal | | 1995 |
| John Shanley : North Dakota's first catholic bishop | Duchschere, Kevin A. | Article in Journal | | 1979 |
| John Steiner: Margaret Aylward's 'venerable worker for the cause of poor children' | Regan, Ethna | Article in Book | | 2012 |
| John Sweetman - a 1798 connection with Churchtown and Taney, County Dublin | Magee, Sean | Article in Journal | | 2013 |
| John T. McNicholas in the age of practical thomism | Avella, S. M. | Article in Journal | | 1986 |
| John Thomas Troy, Archbishop of Dublin, 1786-1823 : a man of his times | O'Donoghue, Patrick | Article in Book | | 1990 |
| John Thomas Troy, archbishop of Dublin, and the establishment of St. Patrick's College, Maynooth, 1791-5 | McNally, Vincent J. | Article in Journal | | 1981 |
| John Verdon, Clonmore, Co. Louth, parish priest of Drogheda, bishop of Ferns (1709-28) | | Article in Journal | | 1980 |
| John Wheatley, Catholic socialism and Irish labour in the West of Scotland, 1906-1924 | Gunnin, G. C. | Monograph or Collective Volume | Garland | 1987 |
| John Wheatley, the Irish and the Labour Movement in Scotland | Wood, Ian S. | Article in Journal | | 1980 |
| John's Lane | Butler, Thomas | Monograph or Collective Volume | St John's Priory | 1983 |
| Jolly beggars : Irish priests fundraising abroad | Roddy, Sarah | Article in Book | | 2015 |
| Joseph Devlin and the Catholic Representation Association of Belfast, 1895-1905 | Whitford, F. J. | Article in Journal | | 1957 |
| Joseph Dixon and the archdiocese of Armagh, 1852-1866 | McKinney, Amy | Thesis | | 2008 |
| Joseph O'Halloran, S.J. | Hannan, Kevin | Article in Journal | | 1989 |
| Jottings from Maynooth records | Scrutator | Article in Journal | | 1940 |
| Journal | O'Farrell, James | Article in Journal | | 1974 |
| Journal of Monsignor O'Farrell, parish priest of Ardagh 1859-1919 | Anonymous | Article in Journal | | 1973 |
| Journal of the Very Rev. Rowland Davies, LL.D., dean of Ross, and afterwards dean of Cork, from March 8, 1688/9, to September 29, 1690. | Caulfield, RichardDavies, Rowland, 1649-1721 | Monograph or Collective Volume | | 1857 |
| Joyce and the Jesuits | Devlin-Glass, Frances | Article in Journal | | 2008 |
| Joyful mother of children : Mother Francis Mary Teresa Ball | Loreto, A. | Monograph or Collective Volume | Gill | 1961 |
| Judge William Nicholas Keogh | Naughton, Mary | Article in Journal | | 1981 |
| Judge, Jury, Magistrate and Soldier: rethinking law and authority in late eighteenth-century Ireland | Murphy, Kathleen S. | Article in Journal | | 2000 |
| Judith Wogan-Browne (1756-1848). The life, the family and the legacy of a remarkable woman | McQuinn, Christopher P. | Article in Journal | | 2017 |
| Juring and non-juring priests | Brady, John, d.1963 | Article in Journal | | 1943 |
| Justified by faith : an Irish missionary experience in Malawi | Hanley, Angela | Monograph or Collective Volume | St Patrick's Missionary Society | 2002 |
| Kate O'Brien and the Erotics of Liberal Catholic Dissent | Cronin, Michael | Article in Journal | | 2010 |
| Katherine Butler R.S.C. (obituary) | Behan, A. P. | Article in Journal | | 2000 |
| Katherine Hughes: A Life and a Journey | Ó Siadhail, Pádraig | Monograph or Collective Volume | Penumbra Press | 2014 |
| Keash and Culfadda : a local history | | Monograph or Collective Volume | Keash-Culfadda Local History Committee | 2001 |
| Keeping the faith : the Catholic Church and education in Northern Ireland and the U.S.A. | Fraser, Grace | Article in Book | | 2001 |
| Keeping the faith at Gormanston, 1569-1629 | Brady, John, d.1963 | Article in Book | | 1957 |
| Kerry diocese in 1890 : Bishop Coffey's survey | De Brún, Pádraig | Article in Journal | | 1989 |
| Kerry's ancient see and shrine, Ardfert-Brendan | Nunan, Francis | Monograph or Collective Volume | Kerryman | 1950 |
| Kevin : a portrait of Archbishop Kevin McNamara | Power, Louis | Monograph or Collective Volume | [s.n.] | 1993 |
| Kicking with the left foot : being Catholic in Scotland | Reilly, Patrick | Article in Book | | 2000 |
| Kilbrogan Church & Graveyard | Desmond, John | Article in Journal | | 2013 |
| Kilcock Christian Brothers | Rochfort, Jim | Article in Book | | 1999 |
| Kilcormac parish : celebrating 150 years of the Church of the Nativity of the B.V.M. | Kilcormac Parish Committee | Monograph or Collective Volume | Kilcormac Parish Committee | 2018 |
| Kildare and Leighlin Roman Catholic Chaplains in World War I 'If the men can't go to the church then the church must go to the men' | Power, Anne | Article in Journal | | 2016 |
| Kildare Hall, the countess of Kildare's patronage of the Jesuits, and the liturgical setting of Catholic worship in early seventeenth-century Dublin | Loeber, RolfStouthamer-Loeber, Magda | Article in Book | | 2006 |
| Kilkenny's short-lived university (Feb-July 1690) | Leonard, John | Article in Journal | | 1988 |
| Killala diocese : 1835-1839 | MacHale, E. | Article in Journal | | 1985 |
| Killala diocese in 1830-1831 | MacHale, E. | Article in Journal | | 1982 |
| Killala diocese in 1832 to 1834 | MacHale, E. | Article in Journal | | 1983 |
| Killasser: heritage of a Mayo parish | O'Hara, Bernard | Monograph or Collective Volume | Killasser Callow Heritage Society | 2011 |
| Killeenbrenan Friary: Flag-ship house of the Franciscan Third Order in Ireland? | McDermott, Yvonne | Article in Journal | | 2012 |
| Kilmore clergy list of 1723 | Traynor, Owen | Article in Journal | | 1969 |
| Kilmore missionary clergy in nineteenth-century America | Sullivan, Tom | Article in Journal | | 2007 |
| Kilmore priests | McKiernan, Francis | Article in Journal | | 1986 |
| Kilmore priests who have served in other parishes | Kehoe, Tom | Article in Journal | | 2012 |
| Kiltennel Chapel and Graveyard | Ivers, Bobby | Article in Journal | | 2024 |
| Kinsale temperance hall and Canon John O'Mahony | Hickey, N. M. | Article in Journal | | 1986 |
| Knights of St John of Jerusalem | Marmion, William F. K. | Article in Journal | | 1999 |
| Knock | Good, Eileen | Monograph or Collective Volume | Veritas | 2002 |
| Knock 1879-1979 | Rynne, Catherine | Monograph or Collective Volume | Veritas | 1979 |
| Knock : the Virgin's apparition in nineteenth-century Ireland | Hynes, Eugene | Monograph or Collective Volume | Cork University Press | 2008 |
| Knock and its shrine : the story of a famed Irish shrine | Carey, F. P. | Monograph or Collective Volume | Irish Messenger Publications | 1939 |
| Knock marriage introductions | Farragher, Stephen | Article in Book | | 2019 |
| Knock shrine and the Marian year of 1954 | Donnelly, James S., Jr | Article in Book | | 2015 |
| Konfessionskrieg in Nordirland? : Materialen und Uterrichtvorschläge zum Irischen konflikt | Vogt, Hermann | Monograph or Collective Volume | Calwer | 1973 |
| L'Archivio Segreto Vaticano | Giusti, Martino | Monograph or Collective Volume | | 1978 |
| L'Église catholique irlandaise pendant la Première Guerre mondiale, 1914-1918 | De Wiel, Jérôme aan | Article in Journal | | 2005 |
| L'église d'Irlande, tradition et modernité | Considere-Charon, Marie-Claire | Article in Journal | | 1998 |
| L'Église et la modernisation de l'enseignement du second degré en Irlande au début des années soixante | Elliott, Imelda | Article in Journal | | 2015 |
| L'Emeute Gavazzi : violence et liberte d'expression au milieu du XIX siecle | Breton, Vincent | Article in Journal | | 2006 |
| L'émigration irlandaise et les prêtres irlandais en France | Eliot, François | Article in Book | | 1978 |
| L'Irlande, le Quebec et les nationalismes, 1914-1918 (Premiere Partie) : la position des nationalistes Irlandais et Canadiens-Francais de 1914 a 1916 | Jolivet, Simon | Article in Journal | | 2006 |
| L'Irlande, nation Catholique : problèmes de civilisation | Dillard, V. | Article in Journal | | 1938 |
| La bibliothèque du Collège des Irlandais et son fonds de livres ancien | Caillet, Maurice | Article in Journal | | 1991 |
| La culture des défilés politico-religieux en Écosse : une forme de « culture populaire sectaire »? | Duclos, Nathalie | Article in Journal | | 2007 |
| La experiencia Americana : una perspectiva catolica Irlandesa | Durkin, M. | Article in Journal | | 1977 |
| La fin de al première période du Jansénisme. Sources des années 1654-1660 | Ceyssens, Lucien | Monograph or Collective Volume | Institut Historique Belge de Rome | 1963 |
| La mission Capucine Irlandaise à Sedan, 1639-1654 | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1969 |
| La missione di Sir Kenelm Digby all corte di Innocenze X, 1645-1648 | Gabrieli, V. | Article in Book | | 1954 |
| La notion de neutralité de l'État (séperation Église/État) dans le discours politique irlandais en matière d'éducation : entre confusion sémantique et stratégie d'évitement, années 1970-2000 | Fischer, Karin | Article in Journal | | 2015 |
| La première bulle contre Jansénius : sources relatives à son histoire (1644-1653) | Ceyssens, Lucien | Monograph or Collective Volume | Institut Historique Belge de Rome | 1962 |
| La propagation en Irlande des idées de la révolution française | Calkin, H. L. | Article in Journal | | 1955 |
| La romanità di Daniele O'Connell | Oddone, A. | Article in Journal | | 1948 |
| Labour and the liberal agenda | Bacik, Ivana | Article in Book | | 2012 |
| Labour, church and nationalism in Limerick, 1893-1902 | Collins, Patrick John | Thesis | | 1984 |
| Ladies' Association of Charity of St Vincent de Paul : laying the groundwork for the Daughters of Charity | Keenan, Breege | Article in Book | | 2014 |
| Lady Londonderry and the Irish Catholics of Seaham Harbour : "No Popery" out of context | Cooter, R. J. | Article in Journal | | 1976 |
| Lady's day | O'Connell, Margaret | Article in Journal | | 1995 |
| Ladychapel, 1863-2013 | Edwards, Rita | Monograph or Collective Volume | Maynooth Local History Group | 2013 |
| Lageniensis | Scully, Tony | Article in Journal | | 2006 |
| Laity and clergy in the Catholic renewal of Dublin, c.1750-1830 | Begadon, Cormac | Thesis | | 2009 |
| Lake Wadding's Waterford | Byrne, Nial J. | Article in Journal | | 2007 |
| Land owned by Catholics in Ireland in 1688 | Simms, J. G. (John Gerald) | Article in Journal | | 1951 |
| Land questions in modern Ireland | | Monograph or Collective Volume | Manchester University Press | 2013 |
| Landscape and politics | Whelan, Yvonne | Article in Book | | 2014 |
| Landscape and religious practice : a study of Mass attendance in pre-Famine Ireland | Miller, David William, 1940- | Article in Journal | | 2005 |
| Landscapes of south Ulster : a parish atlas of the diocese of Clogher | Duffy, Patrick J. | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1993 |
| Language, ethnicity, and region: Rome and the struggle for dominance of the Canadian Catholic Church, 1785–1930 | Murphy, Terrence | Article in Book | | 2019 |
| Language, nationality and cultural identity in the Irish Free State, 1922-7 | O'Callaghan, Margaret | Article in Journal | | 1984 |
| Language, print and the Catholic Church in Ireland, 1700-1900 | Ó Ciosáin, Niall | Article in Book | | 2007 |
| Languages of radicalism, race and religion in Irish nationalism: the French affinity., 1848-1871 | Kelly, Matthew | Article in Journal | | 2010 |
| Larry Doyle and Nova Scotia | Punch, Terence M. | Article in Book | | 1986 |
| Las hermanas de al misericordia (Irlandesas) : apuntes históricos sobre sus cien años en la Argentina, 1856-1956 | Ussher, Santiago M. | Monograph or Collective Volume | [s.n.] | 1955 |
| Late in the field : Catholic sisters in twentieth-century Ireland and the new religious history | Mac Curtain, Margaret | Article in Journal | | 1995 |
| Late medieval nunneries of the Irish Pale | Mac Curtain, Margaret | Article in Book | | 2004 |
| Later relations between the Primate Peter Lombard and Hugh O'Neill | Silke, John J. | Article in Journal | | 1955 |
| Launching the counterattack : part II of the Roman Catholic hierarchy and the destruction of Parnellism | Larkin, Emmet | Article in Journal | | 1966 |
| Laurence Nihell (1726-95), bishop of Kilfenora and Kilmacduagh | Mitchell, James | Article in Journal | | 1975 |
| Laurence Richardson, O.P., bishop of Kilmore, 1747-53 | Fenning, Hugh | Article in Journal | | 1968 |
| Law and religion : church-state relations in Ireland from independence to the present day | Hogan, G. W. | Article in Journal | | 1987 |
| Lawrence O'Connor (d.1795) | Chambers, Liam | Article in Book | | 1998 |
| Lay Catholic leadership in the United States | Carey, Patrick | Article in Journal | | 1990 |
| Lay Catholicism and religious policy in Cromwellian Ireland | Cunningham, John, 1984- | Article in Journal | | 2013 |
| Laying the nineteenth-century foundations : contributions from a Catholic and a Protestant scholar in the 1820s | Hill, Jacqueline R. | Article in Book | | 2017 |
| Le Concile Vatican II: étape essentielle dans le processus d'ouverture de l'Eglise catholique d'Irlande | Beaugé de La Roque, Pauline | Article in Journal | | 2013 |
| Le deux vies de la fête patronale | Ó Giolláin, Diarmuid | Article in Book | | 1994 |
| Le guerre di religione in Irlanda : colonizzazioni protestanti e martiri della Chiesa cattolica | Lennon, Colm | Article in Book | | 2001 |
| Le lettere inedite di Luca Wadding ad Antonio Caracciolo e la riforma liturgica di Urbano VIII | | Article in Journal | | 1973 |
| Leabhar cuntais Teampaill Mhuire cois Chladaigh, 1727-1738 | Ó hÉideáin, Eustás | Article in Journal | | 1958 |
| Leading from behind? St. Patrick's College, Maynooth and the development of church music in Ireland, 1800 - 1914 | McCarthy, Darina | Article in Book | | 2018 |
| Lecky and the Irish university question | McCartney, Donal | Article in Journal | | 1967 |
| Léiriú Anaman agus altóra: teagasc an Athar de Bhál 2 | Ó Macháin, Pádraig | Article in Journal | | 2008 |
| Leitrim priests in penal times | Logan, Dr. | Article in Journal | | 1946 |
| Leon an Iarthair : aisti ar Sheán Mac Héill, Ardeaspag Thuama 1834-1881 | | Monograph or Collective Volume | Clóchomhar | 1983 |
| Leon Tréada Iúda : an tArdeaspag Seán Mac hÉil, 1791-1881 | Mac Aoidh, Tomás | Article in Book | | 1983 |
| Les catholiques anglais 1850-1950 | Becquet, T. | Article in Journal | | 1951 |
| Les eglises de Belfast pendant la second guerre mondiale | Goldring, Maurice | Article in Journal | | 1991 |
| Les Irlandais en Bretagne 1603-1780 : "invasion", accueil, intégration | Ó Ciosáin, Éamon | Article in Book | | 1994 |
| Les representations de l'Europe chez les elites catholiques de 1957-1985 = representations of Europe by Irish Catholic Elites (1957-1985) | Roque, Pauline Beaugé de la | Thesis | | 2011 |
| Les saints Irlandais hors l'Irlande : étudiés dans le culte et dans la dévotion traditionnelle | Gougaud, Louis | Monograph or Collective Volume | Blackwell Publishers | 1937 |
| Les séminaires Irlandais du continent, la révolution francaise et les origines du collége de Maynooth | Corish, Patrick J. | Article in Journal | | 1998 |
| Let the lantern shine : Presentation, Clonmel, 1813-2013 | | Monograph or Collective Volume | Presentation Sisters | 2014 |
| Let us live for those who love us : faith, family, and the contours of manhood among the Knights of Columbanus in late nineteenth-century Connecticut | Koehlinger, A. L. | Article in Journal | | 2004 |
| Letter from a Novice at St Isidore's College, Rome, in the Early Nineteenth Century and its annotations | Cunningham, John M.
| Article in Journal | | 2021 |
| Letters and papers of Archbishop Ignazio Persico, Papal Commissary to Ireland 1887-8 : Part 3 | O'Callaghan, Edward P. | Article in Journal | | 1996 |
| Letters and papers of Archbishop Ignazio Persico, papal commissary to Ireland 1887-8. Pt. 2 | O'Callaghan, Edward P. | Article in Journal | | 1994 |
| Letters and papers of archbishop Ignazio Persico, papal commissary to Ireland, 1887-1888 | O'Callaghan, Edward P. | Article in Journal | | 1993 |
| Letters from Galway 1772-1805 | | Article in Journal | | 1994 |
| Letters from Maynooth : calendar of letters of Rev. Eugene Conwell, 1798-1805 | | Monograph or Collective Volume | Dundalgan Press | 1942 |
| Letters from the Irish College in Salamanca during the Peninsular Wars (1808-14) | | Article in Journal | | 2011 |
| Letters of a penal priest | | Article in Journal | | 1942 |
| Letters of Charles Bonaventure Maguire O. F. M. (1768-1833) | Faulkner, Anselm | Article in Journal | | 1981 |
| Letters of the Catholic poor: poverty in Independent Ireland, 1920-1940 | Earner-Byrne, Lindsey | Monograph or Collective Volume | Cambridge UP | 2017 |
| Letters on Armagh parish two centuries ago | Ó Fiaich, Tomás | Article in Journal | | 1987 |
| Letters on Armagh parish two centuries ago | Ó Fiaich, Tomás | Article in Book | | 2013 |
| Letters to Pope Innocent IV relating to Ireland | | Article in Journal | | 1959 |
| Letting sleeping dogs lie | Keating, TonyReynolds, Mark | Article in Journal | | 2018 |
| Liam Inglis 1708-78 | Ó Donnabháin, Barra | Article in Journal | | 1998 |
| Liber Lovaniensis : a collection of Irish Franciscan documents, 1629-1717 | | Monograph or Collective Volume | Clonmore & Reynolds | 1956 |
| Liber ruber venerabilis collegii Anglorum de urbe : 1, Annales collegii, pars prima - nomina alumnorum A.D. 1631-1783 | | Monograph or Collective Volume | Catholic Record Society | 1943 |
| Liberal Catholic ideology: an exposition of the political catechism by Thomas Wyse | Heggs, Elizabeth | Article in Journal | | 2007 |
| Liberator : the life and death of Daniel O'Connell 1830-47 | Geoghegan, Patrick M. | Monograph or Collective Volume | Gill and Macmillan | 2010 |
| Liberty and Catholic politics, 1790-1990 | O'Ferrall, Fergus | Monograph or Collective Volume | Freehold Press | 1990 |
| Life and work of Canon Sheehan | McElligott, T.J. | Thesis | | 1942-1943 |
| Life in the Bar Convent : 1686-1900 | Kirkus, Gregory (Sister) | Article in Journal | | 2007 |
| Life in Tudor Limerick: William Good's 'Annual Letter' of 1566 | Houliston, VictorMcCoog, Thomas M. | Article in Journal | | 2016 |
| Life of Blessed Oliver Plunkett, archbishop of Armagh (1625-1681) | Stokes, John F. B. | Monograph or Collective Volume | Catholic Truth Society | 1954 |
| Life of Dean O'Brien, founder of the C.Y.M.S. | Egan, Mary Joan | Monograph or Collective Volume | C.Y.M.S. | 1948 |
| Limerick and Gerald Griffin | Moloney, M. | Article in Journal | | 1940 |
| Limerick and the Eucharistic Congress 1932 | Murphy, Charlotte | Article in Journal | | 2012 |
| Limerick Holy Year exhibition : souvenir catalogue | O'Neill, Patrick | Monograph or Collective Volume | Limerick Leader | 1950 |
| Limerick Jesuits in France | Finegan, Francis | Article in Journal | | 1989 |
| Lion of the west : a biography of John MacHale | Andrews, Hilary | Monograph or Collective Volume | Veritas | 2001 |
| Líontán d’iasgairíbh daoine: aistriúchán leis an Athair Domhnall Ó Súilleabháin (1790-1858). | Ó Súilleabháin, Eoghan | Article in Book | | 2013 |
| List of mass-rocks and altar sites in county Cork | McCarthy, Donogh | Article in Journal | | 1989 |
| Little Irelands | Davis, Graham | Article in Book | NA | 1989 |
| Liturgy and Music | McElroy, Christopher | Article in Book | Oxford University Press | 2023 |
| Living stones : the history and structure of catholic spiritual life in the United States | Chinnici, J. P. | Monograph or Collective Volume | Macmillan | 1989 |
| Living together, living apart : sectarianism in early modern Ireland | Ford, Alan, 1956- | Article in Book | | 2005 |
| Local disturbances in Ireland | Lewis, George | Monograph or Collective Volume | Tower Books | 1977 |
| Local priest stops panic - disaster averted | Kerrigan ,John | Article in Journal | | 1994 |
| Local relief during the Great Irish Famine, 1845-1850 : the case of Castlebar, County Mayo, 1846-1847 | O'Malley, Michael | Article in Journal | | 1997 |
| Londonderry revisited : a loyalist analysis of the civil rights controversy | Kingsley, Paul | Monograph or Collective Volume | Belfast Publications | 1989 |
| Long conflict and how it ends : Protestants and Catholics in Europe and Ireland | Ruane, Joseph | Article in Journal | | 2021 |
| Longford men in the American Civil War (1861-'65) part I : the chaplains | O'Hara, Aidan | Article in Journal | | 2011 |
| Looking backward : Commodore Barry County Club in Twin Lakes, Wisconsin | Greeley, Andrew M. | Article in Journal | | 1979 |
| Looking down our noses | Ward, Leo | Article in Journal | | 1967 |
| Looking for "Powerful Friends" : Irish and English Political Activity in the Spanish Monarchy (1640-1660) | Pérez Tostado, Igor | Article in Journal | | 2005 |
| Lord Brookeborough and the Andrews' premiership | Barton, Brian, 1944- | Article in Journal | | 1998 |
| Lord Castletown's biographical sketch of Canon Sheehan | Fitzpatrick, Bernard Edward Barnaby, Sir, 2nd Baron Castletown, 1848-1937 | Article in Journal | | 2016 |
| Lord Dunboyne | Kingston, John | Article in Journal | | 1961 |
| Lord Fingall of Killeen Castle and Edward Hay of Wexford : Catholic politics in the late eighteenth and early nineteenth century | Ó hÓgartaigh, Margaret | Article in Journal | | 2007 |
| Lord Galway and the penal laws | Kelly, Patrick | Article in Book | | 1987 |
| Lord John Russell and the Irish Catholics 1829-1852 | Parry, Jonathan Philip | Article in Journal | | 2001 |
| Lordan's Classical Academy, Bandon | Canniffe, Pat | Article in Journal | | 2018 |
| Loreto education in Australia : the pioneering influence of Mother Gonzaga Barry | Kelly, Jane | Article in Book | | 2016 |
| Los capellanes Irlandeses en la colectividad hiberno-argentina durante el siglo xix | Ussher, Santiago M. | Monograph or Collective Volume | [s.n.] | 1954 |
| Los irlandeses y la Inquisición portuguesa (siglos XVI-XVIII) | Mendes Drumond Braga, Isabel M.R. | Article in Journal | | 2001 |
| Lost in Rinuccini's shadow : the Irish clergy, 1645-9 | Ó hAnnracháin, Tadhg | Article in Book | | 2001 |
| Lough Derg : the making of the modern pilgrimage | Donnelly, James S., Jr | Article in Book | | 1995 |
| Lough Derg and its unusual 'guardian' Rev. Alexander Calhoun, grandfather of John Caldwell Calhoun, vice-president of the U.S.A. | Cunningham, John B. 1944-,Whalley, M. A. | Article in Journal | | 1981 |
| Lough Derg, the continent of Europe and the recesses of the mind | Haren, Michael | Article in Journal | | 1994 |
| Loughrea : a parish history | Kelly, Declan | Monograph or Collective Volume | History Press | 2014 |
| Louvain - some Longford connections | Morris, Martin | Article in Journal | | 2007 |
| Louvain papers, 1606-1827 | | Monograph or Collective Volume | Stationery Office for the Irish Manuscripts Commission | 1968 |
| Louvain, St Omer and Douai | Wall, Thomas | Article in Book | | 1949 |
| Lovers of a new place : the founding of Tarrawarra Abbey, Victoria | Casey, Michael | Article in Book | | 2015 |
| Love’s betrayal : the decline of Catholicism and the rise of new religions in Ireland | Mulholland, Peter | Monograph or Collective Volume | Peter Lang | 2019 |
| Loyalism in Australasia, 1788 - 1868 | Davis, Richard P. | Article in Book | | 2014 |
| Lucca Wadding, O.F.M., L'annalista dei Francescani | Casolini, Fausta | Monograph or Collective Volume | Vita e Pensiero | 1937 |
| Lucerna fidelium, leis an Ath. Proinsias Ó Maolmhuaidh | | Monograph or Collective Volume | Institute for Advanced Studies | 1962 |
| Luke Joseph Hooke 1714-96 : an Irish theologian in enlightenment France, 1714-96 | O'Connor, Thomas | Monograph or Collective Volume | Four Courts | 1995 |
| Luke Wadding (1588-1657) : the only Irishman to receive votes on a papal conclave | Bhreathnach, Edel | Article in Journal | | 2007 |
| Luke Wadding - Franciscan student and scholar | Galligan, Lucian | Article in Journal | | 1957 |
| Luke Wadding and the breviary of Urban VIII: a study of the book trade between Rome, the Low Countries and the Spanish empire | Hazard, Benjamin | Article in Journal | | 2013 |
| Luke Wadding, the Irish Franciscans, and global Catholicism | NA | Monograph or Collective Volume | Routledge | 2020 |
| Lurgan Free School 1786-1793 | Gracey, Florence | Article in Journal | | 2010 |
| Luxury and austerity, patronage and charity : landlords and a Galway convent in the nineteenth century | Gilmartin, John Maiben | Article in Book | | 1999 |
| Macaulay's O'Connell | Edwards, Owen Dudley | Article in Book | | 1980 |
| Madame da Cunha prefers her own 'dunghill' to a palace: city lodging and country visiting in early eighteenth-century London | Musielak, Ruth | Article in Journal | | 2011 |
| Magdalen Asylums in Ireland, 1880-1930 : welfare, reform, incarceration? | Luddy, Maria | Article in Book | | 2008 |
| Magdalen asylums, 1765-1992 | | Article in Book | | 2002 |
| Magistrates' questions to Catholics, 1709 | | Article in Journal | | 1961 |
| Máistir scoile as Cuinche 1754-1818 | Ó Siocháin, Tomás | Article in Journal | | 2010 |
| Major accessions to repositories in 2001 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2002 |
| Major accessions to repositories in 2002 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2003 |
| Major accessions to repositories in 2003 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2004 |
| Major accessions to repositories in 2004 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2005 |
| Major accessions to repositories in 2005 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2006 |
| Major accessions to repositories in 2006 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2007 |
| Make them love you | Cullen, Kevin | Monograph or Collective Volume | Veritas | 2001 |
| Making history : Holinshed's Irish Chronicles, 1577 and 1587 | McCabe, Richard A. | Article in Book | | 2002 |
| Making Waterford Catholic : Paul Lombard before the Portuguese Inquisition, 1582-86 | O'Connor, Thomas | Article in Book | | 2026 |
| Malachy O'Quealy's ancestral clan, and place of origin | Gaynor, Patrick | Article in Journal | | 1943 |
| Mallow emigrant lives | Kavanagh, Myra D. | Article in Journal | | 2015 |
| Mallow schools, 1824 | Forde, Robert | Article in Journal | | 1989 |
| Mallow Work House Altar | Crowley, Seamus | Article in Journal | | 2015 |
| Managing motherhood : negotiating a maternity service for Catholic mothers in Dublin, 1930-1954 | Earner-Byrne, Lindsey | Article in Journal | | 2006 |
| Managing Motherhood : Negotiating a Maternity Service for Catholic Mothers in Dublin, 1930-1954 | Earner-Byrne, Lindsey | Article in Journal | | 2006 |
| Manning : Anglican and Catholic | | Monograph or Collective Volume | | 1951 |
| Manning the ramparts : Ireland and the agenda of the Roman Catholic church | Smyth, Jim | Article in Journal | | 1995 |
| Mannix in America : Archbishop Daniel Mannix's address at Madison Square Garden, New York, 18 July 1920 | Campbell, Malcolm | Article in Journal | | 2005 |
| Mannix, de Valera and Irish nationalism | Keogh, Dermot | Article in Book | | 1991 |
| Manorhamilton parish church 1783-1983 : glimpses of our history | Anonymous | Monograph or Collective Volume | [s.n.] | 1983 |
| Maori and Mission Sisters in New Zealand Since 1865 : Changing Approaches | Smith, Susan | Article in Journal | | 2007 |
| Map images and hard-headed pragmatism: the Roman Catholic Church and the two Irish states | Ó Corráin, Daithí | Article in Book | | 2023 |
| Mar daortaí Gaedhil | Ó Domhnalláin, Pádraic | Article in Journal | | 1946 |
| Margaret MacCurtain (1929-2020): an appreciation | O'Dowd, Mary | Article in Journal | | 2022 |
| Marginal but not alienated : confessions of a loudmouthed Irish priest | Greeley, Andrew M. | Article in Journal | | 1974 |
| Marian Counter-Reformation | Edwards, John | Article in Book | | 2023 |
| Marist brothers, 1817-2010 | Canning, B. J. (Bernard J.) | Article in Journal | | 2010 |
| Marriage and the pamphlet covers of the Catholic Truth Society | Mac Cárthaigh, Lir | Article in Book | | 2019 |
| Marriage, the Family, and Sexual Ethics | Geiringer, David : Kelly, Laura | Article in Book | Oxford University Press | 2023 |
| Marsh's library and the Irish Catholic tradition | O'Connor, Thomas | Article in Book | | 2004 |
| Martyrdom | Tait, Clodagh | Article in Book | | 2023 |
| Mary : a history of devotion in Ireland | O'Dwyer, Peter | Monograph or Collective Volume | | 1988 |
| Mary Aikenhead (1787-1858), servant of the poor : founder of the Religious Sisters of Charity | Blake, Donal | Monograph or Collective Volume | Caritas | 2001 |
| Maryborough new chaple 1792 | Hyland, Jackie | Article in Journal | | 2003 |
| Marymount 1974-1994 | | Monograph or Collective Volume | Marymount College | 1994 |
| Mass attendance in Ireland in 1834 | Miller, David William, 1940- | Article in Book | | 2000 |
| Mass in a Connemara Cabin : Religion and the politics of painting | O'Sullivan, Niamh | Article in Journal | | 2005 |
| Mass rocks and altar sites in Duhallow | McCarthy, Donogh | Article in Journal | | 1991 |
| Mass Rocks and related sites | Downey, LiamO'Sullivan, Muiris | Article in Journal | | 2014 |
| Mass sites of 'Uíbh Laoghaire' | Bishop, Hilary Joyce | Article in Journal | | 2016 |
| Mass stations in Raphoe | McLaughlin, P. J. | Article in Journal | | 1957 |
| Masshouses and meetinghouses : the archaeology of the penal laws in early modern Ireland | Donnelly, Colm J. | Article in Journal | | 2004 |
| Mater Admirabilis Day Secondary School | Logue, Rose Mary | Article in Journal | | 2017 |
| Material in the Irish language in The Robinson Library, Armagh | Dillon, Charles | Article in Journal | | 2017 |
| Material relating to Ireland in the Albani collection of MSS in the Vatican archives | Giblin, Cathaldus | Article in Journal | | 1964 |
| Materials for a bibliography of the Very Rev. Peter Canon O'Leary, 1893-1900 | Lankford, SeamusÓ Cuiv, S. | Article in Journal | | 1954 |
| Mathew Carey Catholic identity and the Penal Laws | Higgins, Padhraig | Article in Journal | | 2014 |
| Mathew Carey's Irish apprenticeship: editing the "Volunteers Journal", 1783-84 | Kelly, James, 1959- | Article in Journal | | 2014 |
| Matt Talbot | Glynn, Joseph | Monograph or Collective Volume | Veritas | 1977 |
| Matt Talbot and his times | Purcell, Mary | Monograph or Collective Volume | Goodliffe Neale | 1976 |
| Matt Talbot and his times : a new authentic life of the servant of God | Purcell, Mary | Monograph or Collective Volume | Gill | 1954 |
| Matthew Duane: a prudent Irish Catholic Chamber Counsel in England | Kenny, Colum | Article in Journal | | 2018 |
| Matthew Gibney (1837-1925), bishop of Perth, Western Australia | Mitchell, Kilian J. | Article in Journal | | 2001 |
| Matthew Teige (d. 1652), the Irish Pastoral College of Louvain and the 'Lectio Catechistica' (1644) | Dunne, Michael | Article in Journal | | 2014 |
| Maurice Charles Phelan, O. F. M. Cap., an apostle in New York | Stanislaus, Fr. | Article in Journal | | 1959 |
| Maurice MacBrien, bishop of Emly, and the confiscation of his baggage, March 1578 | Millett, Benignus | Article in Journal | | 1993 |
| Maynooth : a Catholic seminary in a Protestant state | Keogh, Dáire | Article in Journal | | 1995 |
| Maynooth : students and ordinations 1895-1984 | Hamell, P. J. | Monograph or Collective Volume | | 1984 |
| Maynooth a hundred years ago | Anonymous | Article in Journal | | 1940 |
| Maynooth and Georgian Ireland | Newman, Jeremiah | Monograph or Collective Volume | Kenny | 1979 |
| Maynooth and the missions | Meehan, Denis | Article in Journal | | 1945 |
| Maynooth and Victorian Ireland | Newman, Jeremiah | Monograph or Collective Volume | Kenny's Bookshops & Art Galleries | 1983 |
| Maynooth college archives | Corish, Patrick J. | Article in Journal | | 1993 |
| Maynooth college buildings : some historical difficulties | Meehan, Denis | Article in Journal | | 1947 |
| Maynooth College, 1795-1995 | Corish, Patrick J. | Monograph or Collective Volume | Gill & Macmillan | 1995 |
| Maynooth Deans in the nineteenth century | Bradley, John, Rev. | Article in Journal | | 2015 |
| Maynooth Mission to Africa : The Story of St Patrick's, Kiltegan | Kiggins, Thomas | Monograph or Collective Volume | NA | 1991 |
| Maynooth Monsignor : [an interview with Monsignor Patrick J. Corish] | Keogh, Dáire | Article in Journal | | 1996 |
| Maynooth students and ordinations 1795-1895 : index | Hamill, Patrick J. | Article in Journal | | 1967 |
| Maynooth students and ordinations, 1795-1893 : index | | Article in Journal | | 1968 |
| Maynooth students, 1795-1895 : index | Hamell, Patrick J. | Article in Journal | | 1968 |
| Maynooth, 1895-1945 | O'Doherty, J. F. | Article in Journal | | 1945 |
| Maynooth, the 'Godless colleges' and liberal imperial thought in the 1840s | Biel, Justin | Article in Journal | | 2018 |
| McCarthyism, Catholicism and Ireland | Madden, Gerard | Article in Journal | | 2017 |
| Meascra de Thaighdithe | Ó Murthuile, Seosamh | Article in Journal | | 1946 |
| Measgra i gcuimhne Mhichíl Uí Chléirigh. Miscellany of historical and linguistic studies in honour of Brother Michael Ó Cléirigh, chief of the Four Masters, 1643-1943 | | Monograph or Collective Volume | Assisi Press | 1944 |
| Meath-born priest victim of Australian wartime censorship: the story of Fr James Timmons | Cusack, Danny | Article in Journal | | 2021 |
| Meathman Down Under: Patrick McGarry of Kildalkey | Cusack, Danny | Article in Journal | | 2019 |
| Medieval Irish cathedral chapters | Nicholls, K. W. (Kenneth W.) | Article in Journal | | 1973 |
| Medieval Kilmeaden parish clergy: rectors or vicars? | O'Brien, Niall C.E.J. | Article in Journal | | 2019 |
| Medieval manuscripts found at Bonamargy friary and other hidden manuscripts | Sharpe, Richard | Article in Journal | | 2015 |
| Medieval memory in eighteenth-century Ireland : the reconstruction of the Gaelic past for an English-speaking audience in the writing of Charles O'Conor | Brady, Colin | Article in Journal | | 2018 |
| Meditations by Katherine Manners, Duchess of Buckingham, 1646 | Manners, Katherine, duchess of Buckingham and marchioness of Antrim, 1603?-1649 | Article in Journal | | 2009 |
| Memoir of the Most Rev. Oliver Plunket, archbishop of Armagh, and Primate of all Ireland, who suffered death for the Catholic faith in the year 1681 | | Monograph or Collective Volume | | 1861 |
| Memoir of the Most Rev. Oliver Plunkett, archbishop of Armagh | Plunkett, Oliver, bishop and saint, 1625-1681
| Monograph or Collective Volume | [s.n.] | 1895 |
| Memoir of the Rev. James McLeer, P.P., Burt and Inch 1847-1864 | Campbell, WilliamMcGinn, Brendan | Article in Journal | | 1978 |
| Memoir of the Very Rev. Matthew Kelly, professor Maynooth College and canon of Ossory | Murphy, N., P.P. | Article in Journal | | 1883 |
| Memoirs of chaplain life : three years with the Irish Brigade in the army of the Potomac | Corby, WilliamKohl, Lawrence Frederick | Monograph or Collective Volume | Fordham University Press | 1992 |
| Memoirs of Richard Whately, Archbishop of Dublin | | Monograph or Collective Volume | Richard Bentley | 1864 |
| Memoirs of the marquess of Rockingham and his contemporaries. 2 vols. | | Monograph or Collective Volume | | 1852 |
| Memoirs through the years, 6 : a Catholic experience in the fifties | Jennings, Mary Lou | Article in Book | | 2004 |
| Memorial inscriptions at St. Columba's Church, Draperstown and St. Anne's Church, Sixtowns | Fawcett, Frederick W.Mawhinney, GrahamMawhinney, JenniferMorrow, David | Monograph or Collective Volume | Ballinascreen Historical Society | 2004 |
| Memorial plaques and windows in Blarney and District churches : 5. St Patrick's Catholic Church, Whitechurch | Gabriel, Brian | Article in Journal | | 2015 |
| Memorials addressed to the Secretary of State for the House Department by Roman Catholic prelates in Ireland on the subject of university and national education in Ireland ... | Anonymous | Monograph or Collective Volume | | 1866 |
| Memories of Mr Holden | Devlin, Madeline | Article in Journal | | 2010 |
| Memories of St Brendan's seminary, Killarney | Ó Lúing, Pádraig | Monograph or Collective Volume | Pádraig Ó Lúing | 1994 |
| Memories of Tomdarragh | McQuillan, Lucy (née Byrne) | Article in Journal | | 2003 |
| Mentalities in Restoration Britain and Ireland, 1660-1678: Anglo-Irish relations from the Restoration to the Popish Plot | Forbes, Arthur Alfred | Thesis | | 1995 |
| Mercy unto thousands | Degnan, M. Bertrand | Monograph or Collective Volume | Browne and Nolan | 1958 |
| Merriman in a world of schoolmasters | Cullen, L. M. (Louis Michael) | Article in Journal | | 2011 |
| Methodism in Irish society, 1770-1830 | Hempton, David | Article in Journal | | 1986 |
| Metropolitan ambitions and politics : Kells-Mellifont and Man & the Isles | Beuermann, Ian | Article in Journal | | 2002 |
| Metropolitan anxieties : on the meaning of the Irish Catholic adventure in Scotland | Boyle, Mark | Monograph or Collective Volume | Ashgate | 2011 |
| Mgr O'Riordan, Bishop O'Dwyer and the shaping of new relations between nationalist Ireland and the Vatican during World War One | De Wiel, Jérôme aan | Article in Journal | | 1999 |
| Michael Anthony Fleming and ultramontanism in Irish-Newfoundland roman catholicism, 1829-1850 | Fitzgerald, John Edward | Article in Journal | | 1998 |
| Michael Cardinal Logue 1840-1924, part 1 | Walsh, Aisling | Article in Journal | | 1997 |
| Michael Cardinal Logue 1840-1924, part 2 | Walsh, Aisling | Article in Journal | | 1999 |
| Michael Cardinal Logue 1840-1924, Part IV - 'A Catholic ethos for a Catholic society' | Walsh, Aisling | Article in Journal | | 2005 |
| Michael Cardinal Logue, 1840-1924, striving for a Catholic education system, Part 3 | Walsh, Aisling | Article in Journal | | 2003 |
| Michael Charles Purtill (1846-1914); an Irish step dancer in Sydney | Mollenhauer, Jeanette | Article in Journal | | 2018 |
| Michael John Brenan | O'Reilly, Thomas | Article in Journal | | 1941 |
| Michael Kieran, 1803-1869, parish priest of Dundalk, 1848-1869, Archbishop of Armagh, 1866-1869 | Bellew, Tom | Article in Journal | | 1994 |
| Michael Logue and the Catholic Church in Ireland, 1879-1925 | Privilege, John | Monograph or Collective Volume | Manchester University Press | 2009 |
| Michael Logue, the Catholic Church and public affairs in Ireland, 1879-1924 | Privilege, John | Thesis | | 2005 |
| Michael MacDonogh, O.P., bishop of Kilmore, 1728-46 | Fenning, Hugh | Article in Journal | | 1966 |
| Michael McCarthy and James Joyce's Dublin | Ledden, Patrick J. | Article in Journal | | 2000 |
| Michael McCarthy's campaigns against clerical authority | Maume, Patrick | Article in Book | | 2020 |
| Michael Peter MacMahon : bishop of Killaloe, June 5, 1765 - Februray 20, 1807 | Clancy, J. J. | Article in Journal | | 1940 |
| Michael Wadding, mystic and missionary, 1586-1644 | Burris, E. J. | Article in Journal | | 1954 |
| Michael, Cardinal Logue, 1840-1924 | Walsh, Aisling | Thesis | | 1996 |
| Mid-twentieth-century architectonics of Catholic Dublin | Rowley, Ellen | Article in Book | | 2020 |
| Migration, Migrant Chaplaincy, and Multi-ethnic Britain | Mangion, Carmen M. | Article in Book | Oxford University Press | 2023 |
| Migration, mission and identity : Presbyterian fundraising and the evangelization of the Irish Roman Catholic diaspora, c. 1840-70 | Holmes, Andrew R. | Article in Book | | 2016 |
| Militants of the 1860's : the Philadelphia Fenians | Clark, Dennis | Article in Journal | | 1971 |
| Mimesis, memory, and the magic lantern : what did the Knock witnesses see? | Carpenter, Paul | Article in Journal | | 2011 |
| Ministers, bishops and the changing balance of power in Irish education 1950-70 | Walsh, John | Article in Journal | | 2012 |
| Ministry in Rosscarbery | Walsh, Fr. Pat | Article in Journal | | 2004 |
| Minority verdict : experiences of a Catholic public servant | Hayes, Maurice | Monograph or Collective Volume | Blackstaff Press | 1995 |
| Minority versus minority : constitutional nationalism and republicanism in Northern Ireland 1981-1988 | Ó Beacháin, Donnacha | Article in Journal | | 1991 |
| Miscellanea 3 : Stations in the parish of Durrow, Ossory, in 1826 and 1840 | O'Doherty, Sean | Article in Journal | | 2008 |
| Miscellanea 3. General Sherman and Father Shearman | Ó Macháin, Pádraig | Article in Journal | | 2006 |
| Miscellanea : Shanagolden celebrates O'Connell's victory | Coleman, Patrick | Article in Journal | | 2001 |
| Miscellanea. 1. Rinuccini letters in the Archivio di Stato, Roma: a preliminary report | Ó Fearghail, Fearghus | Article in Journal | | 2010 |
| Miscellaneous documents : 2, 1625-40 | | Article in Journal | | 1949 |
| Miscellaneous documents, 1602-1715 | Jennings, Brendan | Article in Journal | | 1950 |
| Miscellaneous papers | | Article in Journal | | 1951 |
| Miscellany. The beginnings of Irish Catholic journalism in America | Folk, Paul J. | Article in Journal | | 1920 |
| Misean Mhaigh Nuad chun na Síne, 1916-1963 | Ó Murchú, Pádraig | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2003 |
| Mission or Church, 1570-1640? | McCoog, Thomas M. | Article in Book | | 2023 |
| Missionaries from All Hallows (Dublin) to the United States, 1842-65 | Purcell, Richard J. | Article in Journal | | 1942 |
| Missionaries of the Sacred Heart | Mac Carthaigh, Donncha | Monograph or Collective Volume | MSC | 2004 |
| Missionary and military chaplain : Father John Mullan and the Siege of Kut-al-Amara | Hagerty, James | Article in Book | | 2015 |
| Missionary priests of All Hallows College, Dublin, from the diocese of Armagh 1842-75 | Murray, Patrick | Article in Journal | | 1955 |
| Missionary record of the Oblates of Mary Immaculate, St. Mary Magdalene, Blaenau Ffestiniog | O'Donovan, Richard | Monograph or Collective Volume | Missionary Oblates of Mary Immaculate | 2003 |
| Missionary sisters of St Columban | Fairbairn, Margaret | Article in Journal | | 1947 |
| Missions to Gaels : reformation and counter-reformation in Ulster and the Highlands and islands of Scotland | Macdonald, Fiona A. | Monograph or Collective Volume | John Donald | 2005 |
| Mister, are you a priest? : jottings by Bishop Edward Daly | Daly, Edward | Monograph or Collective Volume | Four Courts | 2000 |
| Mixed marriage, "a grave injury to our church" : An account of the 1957 Fethard-on-Sea Boycott | O'Connor, Catherine | Article in Journal | | 2008 |
| Mixed marriages and Irish politics : the effect of 'Ne temere' | De Bhaldraithe, Eoin | Article in Journal | | 1988 |
| Mixed marriages in pre-independence Ireland | Rafferty, Oliver P. | Article in Book | | 2019 |
| Modernism, tradition and debates on religious art in Ireland, 1920-1950 | Turpin, John | Article in Journal | | 2002 |
| Modernizing mobility studies | Fox, Richard Wightman | Article in Journal | | 1977 |
| Monaghan cathedral | Duffy, Joseph | Monograph or Collective Volume | Eason | 1992 |
| Monaghan, county of intrigue | Ó Cuinneagáin, Mícheál | Monograph or Collective Volume | The author | 1980 |
| Money and Irish Catholicism : an intimate history, 1850-1921 | Roddy, Sarah | Monograph or Collective Volume | Cambridge University Press | 2025 |
| Monica Lea-Wilson : warrior widow of the Church Militant | Hanna, Michael V. | Article in Journal | | 2024 |
| Monsignor Denis Faule | Murray, Raymond | Monograph or Collective Volume | Cumann Seanchais Árd Mhaca | 2006 |
| Monsignor James Horan : memoirs, 1911-1986 | Horan, James | Monograph or Collective Volume | Brandon | 1992 |
| Monsignor James O'Laverty : parish priest of Holywood and historian of the diocese of Down and Connor | Macaulay, Ambrose | Article in Journal | | 1980 |
| Monsignor John Hagan 'Watchman of the Gael' | Ó Duinn, Séamus | Article in Journal | | 1992 |
| Monsignor O'Riordan, Bishop O'Dwyer and the shaping of new relations between nationalist Ireland and the Vatican during World War I | De Wiel, Jérôme aan | Article in Journal | | 1999 |
| Monsignor Pádraig de Brún (1889-1960) : cathaoirleach Chomhairle na hInstitúide (1940-1960) | Ó Flaithimhín, Séamus | Article in Journal | | 1994 |
| Monsignor Patrick J. Hamell, a profile | Doran, Liam | Article in Journal | | 1996 |
| Monsignor Patrick Joseph Boylan, V.G. | Weafer, John | Article in Journal | | 2013 |
| Monsignor Patrick O'Reilly, 1843-1914 | Kavanagh, Myra | Article in Journal | | 2014 |
| Monsignor Thomas Aquinas Quirke | Crowley, SeamusO'Connor, Jim | Article in Journal | | 1998 |
| Montalembert Letter on Catholicism in Ireland | | Article in Journal | | 2011 |
| Monumental inscriptions from Stradbally R. C. church and Faha chapel-of-ease, Co. Waterford, up to 1880 | Mulholland, J. | Article in Journal | | 1981 |
| Moral monopoly : the Catholic church in modern Irish society | Inglis, Tom | Monograph or Collective Volume | Gill & Macmillan | 1987 |
| Moral monopoly : the rise and fall of the Catholic church in modern Ireland | Inglis, Tom | Monograph or Collective Volume | University College Dublin Press | 1998 |
| Moral order and the liberal agenda in the Republic of Ireland | Hug, Chrystel | Article in Journal | | 2001 |
| Moral prescription : the Irish medical profession, the Roman Catholic church and the prohibition of birth control in twentieth-century Ireland | Earner-Byrne, Lindsey | Article in Book | | 2010 |
| More Kilmore clergy lists | Traynor, Owen | Article in Journal | | 1971 |
| More than one working class : Protestant and Catholic riots in Edwardian Liverpool | Bohstedt, John | Article in Book | | 1992 |
| Morrisown Lattin, County Kildare, 1630–1800 the estate and its tenants | Lyons, Emma | Monograph or Collective Volume | Four Courts Press | 2020 |
| Most Rev Dr Andrew Boylan, C.S.S.P., bishop of Kilmore (1907-1910) | Mulvey, Anthony | Article in Journal | | 1991 |
| Most Rev. James Ryan, D. D., coadjutor bishop of Killaloe, 1872 to 1889 | Fogarty, Michael | Article in Journal | | 1942 |
| Most Rev. Patrick Murray, CSSR, 1865-1959 | Canning, B. J. (Bernard J.) | Article in Journal | | 1999 |
| Most Rev. Thomas McDonnell bishop of Killala, Dec. '70 - Jan. '87 : a personal tribute by Rt. Rev. P. Gallagher P.P., V.G. Crossmolina | Gallagher, Patrick | Article in Journal | | 1988 |
| Most Rev. William Gross : missionary bishop of the South | Skeabeck, Andrew, Rev. | Article in Journal | | 1954 |
| Mother and child : maternity and child welfare in Dublin, 1922 - 60 | Earner-Byrne, Lindsey | Monograph or Collective Volume | Manchester University | 2007 |
| Mother Berchmans Hughes, F.C.J. | Moorhead, Patricia | Article in Journal | | 1996 |
| Mother Jones : Ireland to North America to Ireland | Gorn, Elliott J. | Article in Journal | | 2014 |
| Mother Mary Aikenhead | Doolan, Aegidius | Article in Journal | | 1958 |
| Mother Mary Aikenhead | MacDonagh, Hilary | Article in Journal | | 1958 |
| Mother Mary Benedict Hickey of Perthwille and Tooreenbawn | Ua Cadhla, Diarmuid | Article in Journal | | 1997 |
| Mother Patrick Cosgrave, OP (1863-1900) - A Wexford Missionary in Rhodesia | Cosgrave, BillCosgrave, Nick | Article in Journal | | 2005 |
| Mother Vincent Whitty : woman and educator in a masculine society | O'Donoghue, Mary | Monograph or Collective Volume | Melbourne University Press | 1972 |
| Mount Lourdes : a history | Tannian, Bridie | Monograph or Collective Volume | Menapia | 1999 |
| Moving beyond sectarianism : religion, conflict and reconciliation in Northern Ireland | Clegg, CeceliaLiechty, Joseph | Monograph or Collective Volume | Columba | 2001 |
| Moving beyond sectarianism : religion, conflict, and reconciliation in contemporary Northern Ireland | Clegg, CeceliaLiechty, Joseph | Article in Book | | 2003 |
| Mrs John O'Brien, her life, her work, her friends | Bayley Butler, BeatriceButler, Katherine | Article in Journal | | 1980 |
| MS material for diocesan and parochial history : report on the collections of sources : 2 | Ó Fiaich, Tomás | Article in Journal | | 1955 |
| Múineadh na Gaeilge agus na Bráithre Críostaí | Ó Meachair, Tadhg | Article in Book | | 1996 |
| Muircheartach Ó Domhnalláin, easbog Chluain Fearta, 1695-1706 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1953 |
| Muircheartach Ó Domhnalláin, easbog Chluain Fearta, 1695-1706 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1952 |
| Muirthéacht na séú aoise déag | Ó Laidhin, Tomás | Article in Journal | | 1952 |
| Multyfarnham Friary through the years | Kealy, John | Article in Journal | | 2017 |
| Municipal reform and the repeal movement in Cork, 1833-1844 | Cronin, Maura (née Murphy) | Article in Journal | | 1976 |
| Murder at Aughnacloy 1818 | Dillon, Charles | Article in Journal | | 1990 |
| Murder at the Black Castle, Wicklow - 1645 (the life and times of Edmund O'Reilly, primate archbishop of Ireland) | O'Reilly, Edward | Article in Journal | | 1997 |
| Murder most foul? | Finlay, John | Article in Journal | | 1999 |
| Murtagh Dunne : Brother Christopher Luke F.S.C. (1890-1959) | Kavanagh, P. J. | Article in Journal | | 1999 |
| Muscular Catholicism : nationalism, masculinity and Gaelic team sports, 1884-1916 | McDevitt, Patrick F. | Article in Journal | | 1997 |
| Muscular Catholicism : nationalism, masculinity, and Gaelic team sports, 1884-1916 | McDevitt, Patrick F. | Article in Book | | 2005 |
| Music and religion in Ireland | O'Donoghue, Patrick | Article in Book | | 1995 |
| Music and the institutions | Ryan, Joseph J. | Article in Book | | 1998 |
| My feelings about Britain, British governments, Roman Catholicism and Irish nationalists | McGimpsey, Christopher D. | Article in Book | | 1986 |
| My mother taught me how to pray : the nine Murphys of Newmarket-on-Fergus | Clear, Caitríona | Article in Journal | | 1995 |
| My own story | O'Sullivan, SheilaÓ Laoghaire, Pádraig | Monograph or Collective Volume | Gill & Macmillan | 1973 |
| Myles Gerald Keon | Butler, James | Article in Journal | | 1951 |
| Myles Walter Keogh (1840-1876) | Kehoe, Imelda | Article in Journal | | 1992 |
| Myths, revisionism and the writing of Irish history | Larkin, Emmet | Article in Journal | | 1998 |
| Na coláistí Éireannacha i bPáras, 1578-1978 | Ó Doibhlin, Breandán | Article in Book | | 1988 |
| Na Colmbánaigh, 1963-2005 | Ó Murchú, Pádraig | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2005 |
| Na cosantóiri i gcomhtheacs na hÉireann - 1785-98 | Ní Bhroiméil, Úna | Article in Journal | | 1987 |
| Na Manaigh Liatha sa 17ú céad : trí cáipéisí | Mac Niocaill, Gearóid | Article in Journal | | 1956 |
| Nano Nagle (1718-1784): Educator | Clear, Caitriona | Article in Journal | | 2009 |
| Nano Nagle - an unconventional woman | Castle, JessieO'Brien, Gillian | Article in Journal | | 2018 |
| Nano Nagle: her life and times | Nowlan-Roebuck, Catherine | Article in Journal | | 2018 |
| Nation / Nazione : Irish nationalism and the Italian Risorgimento | | Monograph or Collective Volume | University College Dublin Press | 2014 |
| Nation und Konfession : Varianten des politischen Katholizismus im Europa des 19 Jahrhunderts | Birke, Adolf M., 1939- | Article in Journal | | 1996 |
| National University of Ireland, Maynooth | Smyth, Séamus | Article in Book | | 2008 |
| Nationalism and illuminated addresses : an Irish Catholic community in Victorian Lancashire | Dunleavy, John | Article in Journal | | 2009 |
| Nationalism and the Catholic Church in the 1840s | Hill, Jacqueline R. | Article in Journal | | 1975 |
| Nationalism as blasphemy : negotiating belief and institutionality in the genre of Fenian recollections | Martin, Amy E. | Article in Book | | 2005 |
| Nationalism from the pulpit: Revd Michael O'Hickey, Irish education and the Gaelic ideal | McManus, Cathal | Article in Book | | 2012 |
| Nationalism in the textbooks of the Christian Brothers | Walsh, Lorcan | Article in Journal | | 1986 |
| Nationalism, race, religion and the Irish Question in inter-war Scotland | Finlay, Richard J. | Article in Journal | | 1991 |
| Nationalism, religion and the education question | Moran, Dermot | Article in Journal | | 1983 |
| Nationalist Belfast and the Great War...Belfast's forgotton soldiers | Mercer, Eric | Article in Journal | | 2000 |
| Navan, Co. Meath, in 1766 | Gurrin, Brian F. | Article in Journal | | 2004 |
| Nazionalismo e integralismo religioso come attrazioni esotiche : Edith e Victor Turner al purgatorio di S. Parizio | Taviani, Paolo | Article in Journal | | 1995 |
| Near famine : the Roman Catholic Church and the subsistence crisis of 1879-82 | Moran, Gerard | Article in Journal | | 2003 |
| Negotiating the middle ground: Thomas Moore on religion and Irish nationalism | Roney, John B. | Article in Book | | 2017 |
| Neither feminist nor flapper : the ecclesiastical construction of the ideal Irish woman | Valiulis, Maryann Gialanella, 1947- | Article in Book | | 1995 |
| Neither pagan nor Protestant? : Irish Catholicism since the Reformation | Drumm, Michael | Article in Book | | 1999 |
| Nenagh. The story of Nenagh convent, Sisters of Mercy | Anonymous | Article in Journal | | 1953 |
| Networking respectability : class, gender and ethnicity among the Irish in South Wales, 1845–1914 | O'Leary, Paul | Article in Journal | | 2005 |
| New church of St Malachy's | Ó Muirí, Réamonn | Article in Book | | 2013 |
| New Ireland, New Church | Martin, Diarmuid, Archbishop of Dublin 1945- | Article in Journal | | 2011 |
| New light on the background to the Irish participation in the papal army of 1860 | Cryan Pancani, M. J. | Article in Journal | | 1986 |
| New perspectives on the 'devotional revolution': evidence from the archives of the Irish College, Paris | Begadon, Cormac | Article in Journal | | 2018 |
| New Zealand | Duggan, Eileen | Monograph or Collective Volume | Gill | 1971 |
| New Zealand Catholicism and the Irish issue, 1914-1922 | Sweetman, Rory M. | Article in Book | | 1989 |
| Newcastle Catenians and the Great War | Hagerty, James M.Kenmair, Kevin | Article in Journal | | 2007 |
| Newman | McHugh, Roger Joseph | Article in Journal | | 1944 |
| Newman : light in winter | Trevor, Meriol | Monograph or Collective Volume | [s.n.] | 1962 |
| Newman : the man and his legacy | Kennedy, Finola | Article in Journal | | 1990 |
| Newman and Father Dominic Barberi | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1945 |
| Newman and literary studies in the university | Kleineberger, Hans R. | Article in Journal | | 1990 |
| Newman and Maynooth | Corish, Patrick J. | Article in Book | | 1978 |
| Newman and the Irish Bishops | O'Connell, Marvin R. | Article in Journal | | 2004 |
| Newman at Beaumont | Brown, Stephen J. | Article in Journal | | 1945 |
| Newman commemoration, 1852-1952 : catalogue of an exhibition of books, documents and manuscripts relating to Cardinal Newman | Anonymous | Monograph or Collective Volume | Browne and Nolan | 1952 |
| Newman in Dublin : fresh light from the archives of propaganda | Whyte, J. H. | Article in Journal | | 1960 |
| Newman in Ireland | Field, W. N. | Article in Journal | | 1945 |
| Newman's 'idea' and the Irish reality | O'Donoghue, Noel Dermot | Article in Journal | | 1991 |
| Newman's difficult Dublin years | Kelley, Nora M. | Article in Journal | | 1977 |
| Newman's idea of a university, "the Circle of the Sciences", and the constitution of the church | Peterburs, Wulstan | Article in Book | | 2005 |
| Newman's Irish adventure | Williams, William J. | Article in Journal | | 1951 |
| Newman's Irish university | Barr, Colin | Article in Book | | 2020 |
| Newman's Irish years | McHugh, Roger Joseph | Article in Journal | | 1945 |
| Newman's work for university education in Ireland | McGrath, Fergal | Thesis | | |
| Newman, Faber and the oratorian separation : a reappraisal | Quinn, John F. | Article in Journal | | 1990 |
| Newman, Ireland, and Universality | Docherty, Thomas | Article in Journal | | 2004 |
| Newpark House and the Mahon family | Barron, Declan | Article in Journal | | 2019 |
| Newport Co. Tipperary between the religious censuses 1766-1835 | Sweeney, Hugh | Article in Journal | | 2012 |
| Newry - its growth - its Catholicity | Campbell, E. | Article in Journal | | 1946 |
| News from a new Republic : Ireland in the 1950s | Garvin, Tom | Monograph or Collective Volume | Gill & Macmillan | 2010 |
| News not worth relating: the hanging of Walter Evers, 10 June 1642 | Byrne, Joseph
| Article in Journal | | 2022 |
| Nicholas Callan - a scrupulous life of faith and science | Hopkins, BrianMcClintock, Peter | Article in Journal | | 2022 |
| Nicholas Callan - his work and times | Murphy, Patrick | Article in Journal | | 1964 |
| Nicholas Callan : priest scientist | McLaughlin, P. J. | Monograph or Collective Volume | Clonmore & Reynolds | 1965 |
| Nicholas Callan, 1799-1864 | McKeith, Niall E. | Article in Book | | 2003 |
| Nicholas Conaty, bishop of Kilmore, (1865-1886) | Kelly, Gabriel | Article in Journal | | 1987 |
| Nicholas French, bishop of Ferns, and the peace with Ormonde, 1649 | Corish, Patrick J. | Article in Journal | | 1947 |
| Nicholas Tuite in the West Indies (1705-1772) | Tuite, Peter | Article in Journal | | 2018 |
| Nicholas Wiseman, ecclesiastical politics and Anglo-Irish relations in the mid nineteenth century | Rafferty, Oliver P. | Article in Journal | | 1993 |
| Nicholas Wiseman, ecclesiastical politics and Anglo-Irish relations in the mid-nineteenth century | Rafferty, Oliver P. | Article in Journal | | 1993 |
| Nineteen fifty-four: the Marian Year in Drogheda | Mullen, Maura | Article in Journal | | 2013 |
| Nineteenth-century European co-operation : Ireland, France and Germany - the role played by French liberal Catholics as a channel for the dissemination of O'Connell's ideas in Catholic Germany | Grogan, Geraldine F. | Article in Book | | 2004 |
| Nineteenth-century Irish Catholicism : farmer's ideology and national religion : explorations in cultural explanation | Hynes, Eugene | Article in Book | | 1989 |
| Ninety candidates proposed for Irish dioceses, c. 1665 | Millett, Benignus | Article in Journal | | 1955 |
| No cheap grace : reforming the Irish Church | Murphy, Séamus, SJ | Article in Book | | 2012 |
| No crusader | Walsh, Willie | Monograph or Collective Volume | Columba Press | 2016 |
| No Irish need apply | Gitelman, H. M. | Article in Journal | | 1973 |
| No lions in the hierarchy : an anthology of sorts | Dunn, Joseph | Monograph or Collective Volume | Columba | 1994 |
| No sex, please, we're Catholic: the influence of the Catholic church on the declining marriage rates in Ireland between the Famine and the First World War | Foley, Aideen | Thesis | | 2000 |
| No temporising with the foe. Literary materials relating to the siege of Derry | Burnside, Sam | Article in Journal | | 1988 |
| No tigers in Africa : recollections and reflections of 25 years of 'Radharc' | Dunn, Joseph | Monograph or Collective Volume | Columbia University Press | 1986 |
| No words can tell our sorrow. A tribute to the late Cardinal Ó Fiaich | Kearns, Patrick | Article in Journal | | 1990 |
| Non-juring priests in 1714 | Walsh, Paul, Revd, 1885-1941 | Article in Journal | | 1937 |
| North William Street, Dublin : founding parish mission, education and pastoral work | Neylon, Anne | Article in Book | | 2014 |
| North-Eastern Boundary Bureau, 1922-1923 : handbook of the Ulster question | Anonymous | Monograph or Collective Volume | The Stationery Office | 1923 |
| Northern Catholics and the early years of the Troubles | Rafferty, Oliver P. | Article in Book | | 2013 |
| Northern Ireland : faith and faction | Irvine, Maurice | Monograph or Collective Volume | Routledge | 1991 |
| Northern Ireland : from birth pangs to disintegration, 1920-72 | Phoenix, Eamon | Article in Book | | 1989 |
| Northern Ireland and the Catholic Church in Britain | Dowden, R. | Monograph or Collective Volume | Commission for International Justice | 1976 |
| Northern Ireland, 1920-25 | Barton, Brian, 1944- | Article in Book | | 2003 |
| Northern Ireland, 1925-39 | Barton, Brian, 1944- | Article in Book | | 2003 |
| Northern Ireland, 1939-45 | Barton, Brian, 1944- | Article in Book | | 2003 |
| Northern nationalism : nationalistic politics, partition and the Catholic minority in Northern Ireland 1890-1940 | Phoenix, Eamon | Monograph or Collective Volume | Ulster Historical Foundation | 1994 |
| Nos Autem : Castleknock College and its contribution | | Monograph or Collective Volume | Gill & Macmillan | 1996 |
| Not in front of the Aatar
mixed marriages and sectarian tensions between Catholics and Protestants in pre-multicultural Australia | McHugh, Siobhan | Article in Journal | | 2009 |
| Nóta fán triúr príomháid de mhuintir Mhic Mhathghamhna | Ó Maolagáin, Pádraig | Article in Journal | | 1947 |
| Nótaí beathaisnéise ar an Dr Séamas Ó Gallchobhair | Mac Murchaidh, Ciarán | Article in Journal | | 1998 |
| Note: All Saints, Drimoleague: clarifications and new discoveries | Butler, Richard J. | Article in Journal | | 2016 |
| Notebook 36 of Fr Laurence Browne, O.F.M. | Ó Huallacháin, Maelísa | Article in Journal | | 2003 |
| Notes and Documents. An Ulster-born Archbishop and a Children's Hospital | Ó hÓgartaigh, Margaret | Article in Journal | | 2014 |
| Notes and Documents. Launch of 'A People's Church' by Liam Swords, St Nathy's College, Ballaghaderreen, 28 February 2014 | Ó Muraile, Nollaig | Article in Journal | | 2014 |
| Notes and Documents. The disputed painting: the Garvey family, the Catholic Church and a feud over an Eakins | McConville, Kieran | Article in Journal | | 2014 |
| Notes from a diary : selected prose and poetry | Corbett, Anselm | Monograph or Collective Volume | Carmelite Order | 2003 |
| Notes of Bishop William Delany and John Lawlor, sculptor | Hamilton, Pádraig | Article in Journal | | 2020 |
| Notes of Mallow Parish in penal times | Kavanagh, Myra D. | Article in Journal | | 2018 |
| Notes on the parishes of Upper Ossory, situate in the Queen's county | Healy, W., C.C. | Article in Journal | | 1883 |
| Notes. An Irish chaplain on the Western Front | Harvey, A.D. | Article in Journal | | 2013 |
| Notes. Church attendance and the burial of Roman Catholic soldiers, 1839 | Kinsella, Anthony | Article in Journal | | 2003 |
| Notices sur les établissements religieux anglais, écossais et irlandais fondés à Paris avant la Révolution | Daumet, Georges | Article in Journal | | 1912 |
| Nuns and their networks in early modern Galway | Cunningham, Bernadette | Article in Book | | 2016 |
| Nuns in Ireland, 1850-1900: female religious in the economy and society | Clear, Caitriona Mary | Thesis | | 1984 |
| Nuns in the Catholic church in Ireland in the nineteenth century | Fahey, Tony | Article in Book | | 1987 |
| Nunziatura in Irlanda | Aiazzi, Giuseppe | Monograph or Collective Volume | | 1844 |
| Nurses, nuns and ladies : a study of class, ethnicity and religion in the Crimean war | Egan, Moira E. | Article in Book | | 2004 |
| Ó gheamhar go cruithneacht : beatha Mhaighréad Aighleart | Ní Chumhaill, Áine | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1990 |
| Ó Lios na nDaróg go Lobháin. A Fermanagh poet in Tridentine Europe | Ó Doibhlin, Breandán | Article in Journal | | 2017 |
| O my dark Rosaleen and Everton House | Nevin, Martin | Article in Journal | | 2013 |
| O'Brien, John Alysius (1878-1956) | Ronald, Heather | Article in Journal | | 1998 |
| O'Casey's 'The drums of Father Ned' in context | Murray, Christopher | Article in Book | | 2000 |
| O'Connell - the man | Horgan, John Joseph, 1881-1967 | Article in Book | | 1949 |
| O'Connell and German Catholicism during the Kulturkampf | Grogan, Geraldine F. | Article in Journal | | 2002 |
| O'Connell and German politics | Alter, Peter | Article in Book | | 1991 |
| O'Connell and Rome | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1980 |
| O'Connell and the English radicals | D'Arcy, Fergus A., 1943- | Article in Book | | 1980 |
| O'Connell and the Spanish civil war 1834-39 | O'Connell, Maurice | Article in Book | | 1992 |
| O'Connell reconsidered | O'Connell, Maurice | Article in Journal | | 1975 |
| O'Connell's first speech on Catholic affairs | Griffith, Francis | Article in Journal | | 1966 |
| O'Connell's Ireland | Marshall, D. | Article in Journal | | 1943 |
| O'Connell's last visit to Meath, Tara and Navan, 22 May 1845 | Condon, Sean | Article in Journal | | 2011 |
| O'Connell, Cardinal Cullen and expatriate nationalism | Steele, D. | Article in Book | | 1980 |
| O'Connell, Davis and the Colleges Bill | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| O'Connell, Davis and the Colleges Bill | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Monograph or Collective Volume | Basil Blackwell | 1948 |
| O'Connell, Genova e il Collegio Irlandese | Hanley, Jean | Article in Book | | 1990 |
| O'Connell, Montalembert and the birth of Christian democracy in France | Joannon, Pierre | Article in Book | | 1991 |
| O'Growney - one hundred years on | Ó Muirí, Damien | Article in Journal | | 1994 |
| O'Hanlon of 'The Irish Saints' | Carey, F. P. | Article in Journal | | 1955 |
| O'Sullivan Beare's rout of English at Ballyhea | Meagher, Jim | Article in Journal | | 1987 |
| Obispos irlandeses y la Monarquía Hispánica en el siglo XVI | García Hernán, Enrique | Article in Book | | 2003 |
| Obituary : Monsignor P. J. Brophy (1919-1998) | McK., D. W. | Article in Journal | | 1998 |
| Obituary : Rev. Timothy Corcoran, S. J. | Anonymous | Article in Journal | | 1946 |
| Obituary : V. Rev. Canon Meehan, P.P., Kilronan | Anonymous | Article in Journal | | 1945 |
| Obituary and Bibliography of Hugh Fenning OP | Cunningham, John M. | Article in Journal | | 2020 |
| Obituary of Brother Edmund Ignatius Rice | Smith, David | Article in Journal | | 2002 |
| Obituary. Fr. Paddy Gallagher | King, C. A. | Article in Journal | | 1996 |
| Obituary. Patrick J. Corish 1921-2013 | O'Connor, Thomas | Article in Journal | | 2014 |
| Obituary. Patrick J. Corish, 1921-2013 | Editor, The | Article in Journal | | 2013 |
| Occasions of faith : an anthropology of Irish Catholics | Taylor, Lawrence J. | Monograph or Collective Volume | Lilliput Press | 1997 |
| Occupation and ethnicity : the Irish in New Brunswick | Toner, Peter M. | Article in Journal | | 1988 |
| Of faith and fatherland : churches and states in Ireland from the Act of Union to the Belfast Agreement, 1800-1998 | Ó Corráin, Daithí | Article in Book | | 2023 |
| Ógra Éireann : spiorad iontach Gaelach á chothú | Ó Catháin, M. F. | Article in Book | | 1996 |
| Oideadh an Athar Uí Shíthigh | De Bhail, Tomás | Monograph or Collective Volume | | 1954 |
| Oidheadh an Athar Ui Shíthigh | de Bhial, Tomás, 1884-1954 | Monograph or Collective Volume | The Stationery Office | 1954 |
| Oilibhéar Pluincéid | Ó Fiaich, Tomás | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1976 |
| Old Blarney (special issue on the Sisters of Charity in Blarney 1892-1990) | Mulcahy, J. | Article in Journal | | 1991 |
| Old English Catholicism in Chester documents, 1609-19 | Mac Cuarta, Brian | Article in Journal | | 2003 |
| Old English views of Gaelic Irish history and the emergence of an Irish Catholic nation | Finnegan, David | Article in Book | | 2011 |
| Old Fintona : a history of the Catholic parish of Donaghcavey in county Tyrone | Ó Gallachair, Pádraig | Monograph or Collective Volume | Cumann Seanchais Chlochair | 1974 |
| Old St Malachy's | Paterson, T. G. F. | Article in Book | | 2013 |
| Old St Malachy's, 1752-1938 | Paterson, T. G. F.,Ó hÁdhmaill, Pádraig | Article in Book | | 2013 |
| Old St Mary's, 1784-1984 | Macaulay, AmbroseRogers, Patrick, | Monograph or Collective Volume | Howard Publications | 1984 |
| Old St. Malachy's | Paterson, T. G. F. | Article in Journal | | 1955 |
| Oldtown : a chapel-village of north County Dublin | Jenkins, William | Article in Journal | | 1992 |
| Oliver : the story of the martyred archbishop of Armagh written for boys and girls | Gaffney, H. M. | Monograph or Collective Volume | Gill | 1946 |
| Oliver Cromwell's Policy toward the English Catholics : The Appraisal by Diplomats, 1654-1658 | Loomie, Albert Joseph | Article in Journal | | 2004 |
| Oliver Cromwell, priestcraft, and the 'deluded and seduced' people of Ireland | Morrill, John | Article in Book | | 2019 |
| Oliver Kelly, Archbishop of Tuam, 1815-1834 | Claffey, Anthony J. | Article in Book | | 2006 |
| Oliver Plunkett, 1 : Ireland's new saint | Ó Fiaich, Tomás | Monograph or Collective Volume | Veritas | 1975 |
| Oliver Plunkett, 2 : In his own words | Forristal, Desmond | Monograph or Collective Volume | Veritas | 1975 |
| Oliver Plunkett, Francis Mac Donnell, O.F.M., and the mission to the Hebrides | Giblin, Cathaldus | Article in Journal | | 1975 |
| Oliver Plunkett, part I : Ireland's new saint; part II : in his own words | Forristal, DesmondÓ Fiaich, Tomás | Monograph or Collective Volume | Our Sunday Visitor by arrangement with Veritas Publications (Dublin) | 1975 |
| Olivia Mary Taaffe, 1832-1918 : foundress of St Joseph's Young Priests Society | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1995 |
| Olivia Taaffe, 7 Eblana Terrace, Kingstown | Clarke, Brian | Article in Journal | | 1996 |
| On Church Grounds : Political Funerals and the Contest to Lead Catholic Ireland | Brophy, Thomas J. | Article in Journal | | 2009 |
| On Father Francis MacMahon | | Article in Journal | | 1956 |
| On His Majesty's Secret Service: Irish Catholic Clerics and the House of Stuart | Ó Ciardha, Éamonn | Article in Book | | 2015 |
| On history repeating itself, or the Orangeman and the Pope, by and Ulster imperialist | Wilson, Alec G. | Article in Journal | | 1912 |
| On Hugh O'Donnell of Larkfield | Ó Tuathail, Éamonn | Article in Journal | | 1941 |
| On mission to Mexico : Michael Wadding, SJ, of Waterford (1587-1644) | Hazard, Benjamin | Article in Book | | 2015 |
| On show to the world : the Eucharistic Congress, 1932 | O'Dwyer, Rory | Article in Journal | | 2007 |
| On the birth of the modern Irish state : the Larkin thesis | Lee, J.J. (John Joseph), 1942- | Article in Book | | 2000 |
| On the Irish waterfront : the crusader, the movie, and the soul of the port of New York | Fisher, James Terence | Monograph or Collective Volume | Cornell University Press | 2009 |
| On the other side of the ocean : John Stritch, SJ (1616-81) and Irish Catholic missionaries in the West Indies | Binasco, Matteo | Article in Book | | 2015 |
| On the structure of wealth-holding in pre-Famine Ireland | Cummins, Neil J. ; Ó Gráda, Cormac | Article in Journal | | 2021 |
| Once a brother : an Irish Christian Brother's story | Power, Patrick C. | Monograph or Collective Volume | Appletree | 2008 |
| Once a soldier : Brother Aloysius J. Howlin, papal zouave and patrician brother | Walker, Linus H. | Monograph or Collective Volume | Patrician Brothers | 1977 |
| Once upon a hill : love in troubled times | Patterson, Glenn, 1961- | Monograph or Collective Volume | Bloomsbury | 2008 |
| One hundred years ago. Excerpts from the Cork Examiner 1918 | Caplice, John | Article in Journal | | 2018 |
| One hundred years with the Clonard redemptorists | Grant, James | Monograph or Collective Volume | Columba | 2003 |
| One island, two nations? : a political geographical analysis of the national conflict in Ireland | Pringle, Denis G. | Monograph or Collective Volume | Research studies | 1985 |
| Open-air Mass in the Donegal mountains, 1867 | O'Hara, Aidan | Article in Journal | | 2018 |
| Opportunity and the minority middle class : a comparison of blacks in the United States and Catholics in Northern Ireland | Hout, Michael | Article in Journal | | 1986 |
| Opposing the "Modern World" : the cult of the Virgin Mary in Ireland, 1965-85 | Donnelly, James S., Jr | Article in Journal | | 2005 |
| Opposite religions still? : interpreting Northern Ireland after the conflict | Lambkin, Brian | Monograph or Collective Volume | Avebury | 1996 |
| Opposition to pilgrimage in tenth-century Ireland | Boyle, Elizabeth | Article in Book | | 2015 |
| Option for the poor : Irish Columbans in Lima, Peru | Collins, Neil | Article in Book | | 2015 |
| Oracles of God : the Roman Catholic church and Irish politics 1922-37 | Murray, Patrick | Monograph or Collective Volume | University College Dublin Press | 2000 |
| Orange and green : Belfast, 1832-1912 | Baker, Sybil E. | Article in Book | | 1973 |
| Orange and green, 1912-62 | Jeffery, Keith | Article in Book | | 1985 |
| Ordinary lives : the private lives of three generations of Ireland's professional classes | Farmar, Tony | Monograph or Collective Volume | Gill & Macmillan|A. & A. Farmar | 1995 |
| Orestes A. Brownson on Irish immigrants and American nativism | McDaniel, Isaac | Article in Journal | | 1981 |
| Origins of the modern Irish missionary movement : the 'Missions Africaines de Lyons' in Cork 1876-1883 | Hogan, Edmund M. | Article in Journal | | 1981 |
| Origins of the present troubles in Northern Ireland | Pipe, Caroline Kennedy | Monograph or Collective Volume | Longman | 1997 |
| Os Irlandeses perante a inquisição Portuguesa: réus e reduzidos (séculos XVI-XVIII) | Mendes Drumond Braga, Isabel M. R., | Article in Book | | 2010 |
| Other martyrs | Anonymous | Article in Journal | | 1991 |
| Oughteragh in 1826 : a case study of rural sectarianism | Logan, John | Article in Journal | | 1976 |
| Our greatest treasure : the true faith | Kearney, John | Monograph or Collective Volume | Burns & Oates | 1942 |
| Our Lady of Coogee : Marian visions in Irish Australia | O'Connell, Mary | Article in Journal | | 2009 |
| Our Lady of Dublin | MacLeod, Catriona | Article in Journal | | 1942 |
| Our Lady's Well | MacMahon, Bryan | Article in Book | | 2012 |
| Our man in the Vatican | O'Brien, Martin | Article in Journal | | 2011 |
| Our Tipperary-born martyrs | Ahern, Michael | Article in Book | | 1993 |
| Out of due time : Wilfred Ward and the Dublin Review | Scotti, Paschal, 1961- | Monograph or Collective Volume | Catholic University of America Press | 2006 |
| Out of the shadows : emerging secondary schools in the Archdiocese of Tuam, 1940-69 | Waldron, Kieran | Monograph or Collective Volume | Nordlaw Books | 2002 |
| Outside the glow : Protestants and Irishness in independent Ireland | Crawford, Heather K. | Monograph or Collective Volume | University College Dublin Press | 2010 |
| Over 'Bloody Sunday' en 'Good Friday' : religieus geweld in Ulster | Bosscher, Doeko | Article in Journal | | 2005 |
| Owen Maginn : a missionary's story | O'Shea, Michael, 1944- | Monograph or Collective Volume | Society of African Missions | 2009 |
| Owen Roe O'Neill and the struggle for catholic Ireland | Casway, J. I. | Monograph or Collective Volume | | 1984 |
| Paddy bogside | Doherty, PatrickHegarty, Peter | Monograph or Collective Volume | Mercier Press | 2001 |
| Padraig de Brún : a poet of enormous unacknowledged achievement | Ó Coigligh, Ciarán | Article in Journal | | 2014 |
| Pádraigín an Doiminiceach as Caiseal Mumhan [c. 1604-54] | Valkenburg, Augustine | Article in Book | | 1986 |
| Pádraigín Haicéad, O.P., 1604?-1654 | Valkenburg, Augustine | Article in Journal | | 1985 |
| Padre Fahy : biografía de Antonio Domingo Fahy, O.P., misionero Irlandés en la Argentina 1805-1871 | Ussher, Santiago M. | Monograph or Collective Volume | # | 1952 |
| Padre Pio : the Irish connection | | Monograph or Collective Volume | Mainstream | 2007 |
| Paenitentiarium S. Maol Ruain | Mooney, Canice | Article in Journal | | 1954 |
| Pages from a Jesuit missioner's diary | Finegan, Francis | Article in Journal | | 1974 |
| Papal awards in the Drogheda area | Durnin, Peter | Article in Journal | | 1992 |
| Papal briefs to Fr. Mansoni, papal nuncio to Ireland | Jones, Frederick | Article in Journal | | 1953 |
| Papal infallibility and the possible Leighlin nexus. Cardinal Moran remembered on the 100th anniversary of his death | Nevin, Martin | Article in Journal | | 2011 |
| Papal primacy then and now | O'Connell, Patrick | Article in Book | | 1970 |
| Papal privileges for Ulster churches, 1608 | Mac Cuarta, Brian | Article in Journal | | 2008 |
| Papal progress | Robbins, Keith | Article in Journal | | 1982 |
| Papers of Richard Joachim Hayes, O. F. M., 1810-23, In Franciscan Library, Killiney : part 3, April 1816 | Giblin, Cathaldus | Article in Journal | | 1982 |
| Papers of Richard Joachim Hayes, O. F. M., 1810-24, in Franciscan Library Killiney, Part 5, Jan - May 1817 | Giblin, Cathaldus | Article in Journal | | 1984 |
| Papers of Richard Joachim Hayes, O. F. M., 1810-24, in Franciscan Library, Killiney : part 4, May - Dec 1816 | Giblin, Cathaldus | Article in Journal | | 1983 |
| Papers of Richard Joachim Hayes, O.F.M., in Franciscan Library, Killiney, 9 : 1817-1820 | Giblin, Cathaldus | Article in Journal | | 1991 |
| Papers of Richard Joachim Hayes, OFM, 1810-1824, in the Franciscan Library, Killiney : part 8, August-December 1817 | Giblin, Cathaldus | Article in Journal | | 1988 |
| Papist and Protestant in the Wild Goose time | O'Sullivan, P. S. | Article in Journal | | 1980 |
| Papists, Protestants and the Irish in London, 1835-70 | Gilley, Sheridan | Article in Journal | | 1972 |
| Papists, protestants and the Irish in London, 1835-70 | Gilley, Sheridan | Article in Book | | 1972 |
| Paris of the Irish | Lennon, M. J. | Article in Journal | | 1955 |
| Parish by parish: constructing Chicago as Catholic space | Skerrett, Ellen | Article in Book | | 2012 |
| Parish Church on fire. From "The People" 13 February 1892 | | Article in Journal | | 2011 |
| Parish clergy since the 1700s | MacMahon, Bryan | Article in Book | | 2012 |
| Parish missions and preaching the word of God | McConvery, Brendan | Article in Book | | 2013 |
| Parish of Termonfechin : a faith celebration : the chalice of salvation | Quinn, Sean | Monograph or Collective Volume | Parish of Termonfechin | 1990 |
| Parish Priest of Dun Laoghaire honoured by The Equestrian Order of the Holy Sepulchre of Jerusalem | Anonymous | Article in Journal | | 2005 |
| Parish priests and church of St. Mary's, 1320-1984 | Pike, Dan | Monograph or Collective Volume | The author | 1984 |
| Parish priests and curates of the parishes of Buttevant and Churchtown 1704-1953 | McCarthy, Jim | Article in Journal | | 1990 |
| Parish priests and curates who served in New Ross, 1669-2001 | Anonymous | Article in Book | | 2001 |
| Parish priests for 400 years | Murphy, Hilary | Article in Journal | | 1987 |
| Parish priests of Armagh since the Reformation | Ó Fiaich, Tomás | Article in Book | | 2013 |
| Parish priests of Armagh, 1752-1834 | Paterson, T. G. F. | Article in Book | | 2013 |
| Parish priests of Cloughjordan | Whyte, Edward | Article in Journal | | 1985 |
| Parish priests of Cloughjordan. Part iv | Whyte, Edward | Article in Journal | | 1996 |
| Parish priests of Cloyne | Kelleher, Thomas | Article in Book | | 1994 |
| Parish priests of Drangan & Cloneen, 1826-1993 | Hall, Michael | Article in Book | | 1993 |
| Parish priests of Kilmore | McKiernan, Francis | Article in Journal | | 1972 |
| Parish priests of Mullaghbawn | Ó Fiaich, Tomás | Article in Journal | | 1974 |
| Parish Registers | Walsh, Pat | Article in Journal | | 2001 |
| Parnassus in Waterford. (Apropos of Latin Proses) | Wall, Thomas | Article in Journal | | 1947 |
| Parnell and the Catholic church | Woods, C. J. (Christopher John) | Article in Book | | 1991 |
| Parsons, priests and the people : the rise of Irish anticlericalism, 1785-9 | Burns, R. E. | Article in Journal | | 1962 |
| Parties, patriots and undertakers : parliamentary politics in early Hanoverian Ireland | McNally, Patrick | Monograph or Collective Volume | Four Courts | 1997 |
| Partition, the Catholic church and the diocese of Clogher, c.1912-1928 | Phoenix, Eamon | Article in Book | | 2005 |
| Passlands graveyard | Monasterevin Historical Society | Article in Journal | | 2008 |
| Pastoral dimensions of the Northern Ireland conflict. The Presbyterian Church; the Catholic Church; the Church of Ireland | Clifford, GerardDunlop, JohnElliott, Eric | Article in Journal | | 1982 |
| Patriarch of Cloyne : the career of Dean O Regan, 1808-1898 | O'Sullivan, Patrick | Article in Journal | | 1989 |
| Patrick Bonaventure Kennedy O.F.M. : 1855-1924 | Egan, Bartholomew, OFM | Article in Journal | | 1989 |
| Patrick Cardinal O'Donnell | Silke, John J. | Article in Journal | | 1988 |
| Patrick Corish’s Maynooth [review article] | Fanning, Ronan | Article in Journal | | 1995 |
| Patrick Dorrian, bishop of Down and Connor, 1865-85 | Macaulay, Ambrose | Article in Journal | | 1989 |
| Patrick F. Scanlan, The Brooklyn Tablet and the New Deal | McNamara, Patrick J. | Article in Journal | | 1993 |
| Patrick Fallon : last bishop of Kilmacduagh and Kilfenora | Coen, Martin | Article in Journal | | 1984 |
| Patrick Fitzsimon and Springfield College | Ó Murchadha, Ciarán | Article in Journal | | 2019 |
| Patrick James O'Byrne, Dean of Armagh (1810-19) and the contemporary scene | Tohall, Patrick | Article in Book | | 2013 |
| Patrick Kavanagh : early religious work and devotional influences on his work | Agnew, Úna | Article in Journal | | 1994 |
| Patrick Kavanagh: poet and prophet | Ó Siadhail, Micheál | Article in Journal | | 2013 |
| Patrick Kelly bishop of Richmond | Keane, Frank | Article in Journal | | 2004 |
| Patrick MacGill, 1890-1963 : an alternative vision | Aspinwall, Bernard | Article in Book | | 1992 |
| Patrick MacMahon, bishop of Killaloe, 1829-1836 | Clancy, John | Article in Journal | | 1941 |
| Patrick Morris and Newfoundland Irish immigration | Mannion, John | Article in Book | | 1986 |
| Patrick Murray : the man and his writings | McNamara, Kevin | Article in Journal | | 1982 |
| Patrick Murray as theologian | Corbett, Thomas | Article in Journal | | 1982 |
| Patrick O'Donnelly, 1649-1719, Bishop of Dromore. Material in the notarial files in Paris and the propaganda archives in Rome | Swords, Liam | Article in Journal | | 1993 |
| Patrick O'Donovan | Coughlan, Charlie | Article in Journal | | 2012 |
| Patrick O'Farrell reassessed - a view from Ireland | Maume, Patrick | Article in Journal | | 2013 |
| Patriotic opinions of some Munster priests, 1847-1882 | Collins, John T. | Article in Journal | | 1959 |
| Patrolmen and Peelers : immigration, urban culture, and 'the Irish police' in Canada and the United States | Jenkins, William | Article in Journal | | 2002 |
| Patron of partition : Bishop Thomas Quinlan, 1896-1970 | McHale, Conor | Monograph or Collective Volume | Rednal | 1995 |
| Patrons and architects and the creation of Roman Catholic church architecture in nineteenth-century Dublin | Grimes, Brendan | Article in Journal | | 2015 |
| Patterns of episcopal leadership | Fogarty, Gerald | Monograph or Collective Volume | Macmillan | 1989 |
| Patterns of language and ritual in Sean O'Casey's language | Ayling, Ronald | Article in Book | | 1977 |
| Patterns of settlement in the Catholic parishes of Ballymore and Mullaghbrack in the 17th and 18th centuries | McGleenon, C. F. | Article in Journal | | 1993 |
| Paul Cardinal Cullen : portrait of a practical nationalist : Paul Cullen and his relationship with the Independent Irish Party of the 1850s and the Fenian movement in Ireland of the 1860s | O'Carroll, Ciaran | Monograph or Collective Volume | Veritas | 2008 |
| Paul cardinal Cullen and the shaping of modern Irish nationalism | Bowen, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Paul Cullen and his contemporaries : with their letters from 1820 to 1902, 5 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1977 |
| Paul Cullen and his contemporaries, Vol. 4 : with their letters from 1820 - 1902 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1974 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol. 2 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1963 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol. 3 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1965 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol.1 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1961 |
| Paul Cullen and the declaration of papal infallibility | Tanner, Norman | Article in Book | | 2011 |
| Paul Cullen and the Irish College, Paris | Chambers, Liam | Article in Book | | 2011 |
| Paul Cullen and the remaking of Catholicism in the Antipodes | Sweetman, Rory | Article in Book | | 2011 |
| Paul Cullen and the visual arts | Kane, Eileen | Article in Book | | 2011 |
| Paul Cullen in the Irish Conservative imagination | Shields, Andrew | Article in Book | | 2011 |
| Paul Cullen, Italy and the Irish Catholic imagination, 1826-70 | Barr, Colin | Article in Book | | 2014 |
| Paul Cullen, John Henry Newman and the movement to create a Catholic University in Ireland, 1854-60 | Barr, Colin | Thesis | | |
| Paul Cullen, John Henry Newman, and the Catholic University of Ireland, 1845-1865 | Barr, Colin | Monograph or Collective Volume | University of Notre Dame Press | 2003 |
| Paul Cullen: cardinal and politician | Senior, Hereward | Article in Book | | 1978 |
| Paul Higgins, a man of legend in Killea | Hayes, William J. | Article in Journal | | 1995 |
| Peace pays a price : a study of Margaret Anna Cusack the nun of Kenmare | Vidulich, Dorothy A. | Monograph or Collective Volume | Sisters of St Joseph of Peace | 1990 |
| Pearse's sacrifice : Christ and Cuchulain crucified and risen in the Easter Rising, 1916 | Gilley, Sheridan | Article in Book | | 1987 |
| Pedagogy and reform : the influence of Peter White on Irish scholarship in the Renaissance | Lennon, Colm | Article in Book | | 2007 |
| Pedro Sinnot : la obra intelectual de un clérigo Irlandés en España | Velasco Moreno, Eva | Article in Book | | 2000 |
| Peggie O'Neill McCarthy remembers the day of the Stations in bygone times | McCarthy, Peggie O'Neill | Article in Journal | | 2003 |
| Peig Sayers and the vernacular of the storyteller | MacMahon, Bryan, 1909-1998 | Article in Book | | 1977 |
| Penal days | Ó Doibhlin, Diarmaid | Article in Book | | 2000 |
| Penal mass sites in the Glens | McKavanagh, Patrick | Article in Journal | | 1973 |
| Penal mass sites in the Kerry diocese | Regan, Pádraig | Article in Book | | 1999 |
| Perceptions of the British Isles and Ireland among the Catholic exiles : the case of Robert Corbington, SJ | Davidson, Peter | Article in Book | | 2010 |
| Perennial Problems of Scottish Catholics : Morale, Personnel and Money | Aspinwall, Bernard | Article in Book | | 2002 |
| Persecution of Catholics in Drogheda, in 1606, 1607 and 1611. (From a contemporary MS. preserved in the Irish College, Salamanca. Carton 40) | | Article in Journal | | 1917 |
| Perspectives in American Catholicism | Ellis, John Tracy | Monograph or Collective Volume | Helicon | 1963 |
| Peter Connolly (1927-1987) | Egan, Desmond | Article in Journal | | 1987 |
| Peter E. Magennis, priest and patriot, 1868-1937 | O'Dwyer, Peter | Monograph or Collective Volume | Carmelite Publications | 1975 |
| Peter Grace, an Irish settler in early Auckland, New Zealand | O'Reilly, Geraldene | Article in Journal | | 2014 |
| Peter Kenney SJ, 1779-1841 : the restoration of the Jesuits in Ireland, England, Sicily and North America | Morrissey, Thomas J. | Monograph or Collective Volume | Catholic University of America Press | 2014 |
| Peter Lombard (1554-1625), prelate, politician, pragmatist | Smith, David | Article in Journal | | 2000 |
| Peter McLaughlin Raphoe and Derry 1760-1840 | Donnelly, Philip | Article in Journal | | 2006 |
| Peter McVerry, Brendan Ryan agus Catherine Dunphy ag caint le Peadar Kirby | Todhchaí na hEaglaise Caitlicí in Éirinn | Article in Journal | | 1991 |
| Peter Walsh and the Confederation of Kilkenny | Brennan, James | Article in Journal | | 1990 |
| Peter Walsh and the remonstrance | Mulrean, B. | Article in Journal | | 1946 |
| Peter Walsh, O.F.M., and the Remonstrance, 1660-65 | Cosgrave, Patrick | Thesis | | 1965 |
| Peter Yorke and progressionism in California, 1908 | Walsh, James P. | Article in Journal | | 1975 |
| Peter's pence : official Catholic discourse and Irish nationalism in the nineteenth century | Taylor, Lawrence J. | Article in Journal | | 1993 |
| Peters pence collection, Ballymore Eustace; the parish of Enniskerry, 1880 | Freeman's Journal | Article in Journal | | 1999 |
| Phases of Irish history : Wadding and the nuncio | Doyle, W. | Article in Journal | | 1940 |
| Philip II of Spain | Petrie, Charles, Sir | Monograph or Collective Volume | Eyre & Spottiswoode | 1963 |
| Philip MacDevitt, bishop of Derry, 1766-97 | Donnelly, Philip | Article in Journal | | 2007 |
| Phoenix Park, Blessed John Paul and the word of the cross | Leahy, Brendan | Article in Book | | 2013 |
| Photographer extraordinary : the life and work of Father Browne | O'Donnell, E. E. | Article in Journal | | 1990 |
| Pieces of Irish history, illustrative of the condition of the Catholics of Ireland, of the origin and progress of the political system of the United Irishmen; and of their transactions with the Anglo-Irish government | MacNeven, W. J. | Monograph or Collective Volume | | 1807 |
| Pietas Austriaca and ‘Dispensers of Royal Authority’: The early Irish Colleges and Habsburg cultural strategies | Downey, Declan M. | Article in Book | | 2018 |
| Piety and nationalism : lay voluntary associations and the creation of an Irish-Catholic community in Toronto, 1850-1895 | Clarke, Brian P. | Monograph or Collective Volume | McGill-Queen's University Press | 1993 |
| Pii antistitis icon, or the Life of Francis Kirwan, bishop of Killala, 1669 | Lynch, John, d. in or after 1677 | Monograph or Collective Volume | The Stationery Office | 1951 |
| Pilgrimage of an Irish priest to the holy land in 1822 | Faulkner, Anselm | Article in Journal | | 1952 |
| Pilgrimages | Barber, Richard | Monograph or Collective Volume | | 1991 |
| Pilgrims in 1893 | O'Reilly, George H. | Article in Journal | | 1999 |
| Pioneer Catholicism in Eastern and Southern Nevada, 1864-1931 | Olson, J. S. | Article in Journal | | 1983 |
| Pioneer Jesuits in northern Mexico | Dunne, Peter Masten | Monograph or Collective Volume | Greenwood Press | 1979 |
| Pious occupations : female activism and the Catholic revival in eighteenth-century Ireland | Raughter, Rosemary | Article in Book | | 2005 |
| Pitch my tent in the Lord : memories of Fr Michael Morahan, S.J. | Faherty, Padhraic | Monograph or Collective Volume | P. Faherty | 1993 |
| Playing Catholic against Protestant : British intervention in Catholic relief in Ireland, 1778 | Lyons, Claire | Article in Journal | | 2013 |
| Poet and priest : Gerard Manley Hopkins, myth and reality | White, Norman | Article in Journal | | 1990 |
| Pogroms : 1857-1935 | Campbell, T. J. | Article in Journal | | 1943 |
| Pól Ó hUiginn | Ó Fiaich, Tomás | Article in Journal | | 1976 |
| Policing the press: censorship, family planning, and the press in Ireland, 1929–67 | O'Brien, Mark | Article in Journal | | 2021 |
| Policing under fire : ethnic conflict and police-community relations in Northern Ireland | Weitzer, Ronald John | Monograph or Collective Volume | State Univ. of New York Press | 1995 |
| Policy on the run : Henry II and Irish Sea diplomacy | Hays, L.Jones, E. D. | Article in Journal | | 1990 |
| Political participation in early Stuart Ireland | Darcy, Eamon | Article in Journal | | 2017 |
| Political parties and social change in Ulster : the case of the SDLP | McAllister, Ian | Article in Journal | | 1976 |
| Political priests: the Parnell split in Meath | Lawlor, David | Article in Journal | | 2010 |
| Political problems 1860-78 | Corish, Patrick J. | Monograph or Collective Volume | Gill | 1967 |
| Political problems, 1850-60 | Whyte, J. H. | Monograph or Collective Volume | Gill | 1967 |
| Political strategy in the service of religious and cultural modernisation : the public career of Florence Conry, c.1560-1629 | Hazard, Benjamin | Thesis | | 2008 |
| Politics and administration, 1815-70 | Kinealy, Christine | Article in Book | | 2011 |
| Politics and the churches in Northern Ireland | Elliott, Eric | Article in Book | | 1986 |
| Politics, education and religion in the age of revolution : Bishop Patrick Foley of Kildare and Leighlin, 1896-1926 | McGrath, Thomas | Article in Book | | 2008 |
| Politics, interdenominational relations and education in the public ministry of Bishop James Doyle of Kildare and Leighlin, 1786-1834 | McGrath, Thomas | Monograph or Collective Volume | Four Courts | 1999 |
| Politics, religion and economy : Cork in the 17th century | Irwin, Liam | Article in Journal | | 1981 |
| Politics, religion and the press : Irish journalism in mid-Victorian England | McNicholas, Anthony | Monograph or Collective Volume | Lang | 2007 |
| Politics, sectarianism and the 'failure' of trade unionism in Northern Ireland : the case of garment unions in Derry, 1945-1968 | Finlay, Andrew | Article in Journal | | 1992 |
| Pontifica Hibernica : medieval papal documents concerning Ireland 640-1261, vol. 2 | | Monograph or Collective Volume | Gill | 1965 |
| Pope Clement XI and the British Isles : the inventory of Fondo Albani 163-168 | Burns, C. S. (Charles S.) | Article in Book | | 1991 |
| Popery and Anti-Popery in Britain and Ireland | Ford, AlanLake, PeterQuestier, Michael | Article in Book | | 2023 |
| Popery in Scotland : Image and Reality, 1820-1920 | Aspinwall, Bernard | Article in Journal | | 1986 |
| Popish clergy in the diocese of Derry in 1704 | Ó Doibhlin, Diarmaid | Article in Journal | | 1980 |
| Popular and unpopular religion : a view from early modern Ireland | Gillespie, Raymond, 1955-2024 | Article in Book | | 1998 |
| Popular anti-Catholicism in mid-Victorian England | Paz, D. G. | Monograph or Collective Volume | Stanford University Press | 1992 |
| Popular Catholicism in Irish New York, c.1900 | McLeod, Hugh | Article in Book | | 1989 |
| Popular Catholicism in twentieth-century Ireland : locality, identity and culture | de Cléir, Síle | Monograph or Collective Volume | | 2017 |
| Popular politicization, Defenderism and the Catholic question | Smyth, Jim | Article in Book | | 1990 |
| Popular politics and the Irish Catholic Church : the rise and fall of the Independent Irish Party, 1850-1859 | Knowlton, Steven R. | Monograph or Collective Volume | Garland | 1991 |
| Popular preaching and the Jesuit mission in seventeenth-century Ireland | Cunningham, Bernadette | Article in Book | | 2022 |
| Population, providence and empire: the churches and emigration from nineteenth-century Ireland | Roddy, Sarah | Monograph or Collective Volume | Manchester University Press | 2014 |
| Positio super introductione causae | Anonymous | Monograph or Collective Volume | | 1914 |
| Post-war social change and the Catholic community in Northern Ireland | Morgan, Michael | Article in Journal | | 1988 |
| Postmodern Europe and the resources of communal identities in Northern Ireland | McCall, Cathal | Article in Journal | | 1998 |
| Pouvoir et perception : une communaute Irlandaise au Quebec au dix-neuvieme siecle | McQuillan, Aidan | Article in Journal | | 1999 |
| Power, wealth and Catholic identity in Ireland, 1850-1900 | O'Neill, Ciaran | Article in Book | | 2013 |
| Prayers before Mass : a devotional classic | De Blacam, Aodh | Article in Journal | | 1940 |
| Pre-famine protestant post-famine catholic : do emigrants' letters reflect the steereotypes? | Parkhill, Trevor | Article in Book | | 2005 |
| Precarious childhood in post-independence Ireland | Maguire, Moira J. | Monograph or Collective Volume | Manchester University Press | 2009 |
| Precious memories of the Old Kilmacud Church | Cahill, Matt | Article in Journal | | 2022 |
| Prelude to confiscation : a survey of Catholic estates in Leinster in 1690 | Cronin, John J. (John Jeremiah), 1971-Loeber, RolfMurtagh, Harman | Article in Journal | | 2001 |
| Prequels: the Irish European diaspora | O'Connor, Thomas | Article in Book | | 2019 |
| Presbyterian missionary activity among Irish Roman Catholics in the nineteenth century | Rodgers, Robert J. | Thesis | | 1970 |
| Presbyterian-Roman Catholic relations in Ireland (1780-1975) | Barkley, John M. | Article in Journal | | 1981 |
| Presentation Convent burial ground, Maynooth | Riordan, Peter J. | Article in Journal | | 1998 |
| Presentation convents in county Tipperary 1806-1900 | Luddy, Maria | Article in Journal | | 1992 |
| Presentments of recusants in Dublin, 1617-1618 | Meagher, John | Article in Journal | | 1960 |
| Pride and tradition among the city's biggest problems | Rynne, Paul | Article in Journal | | 1968 |
| Priest of Ennis : Doctor Andrew Burke, 1650-1727 | Ó Dálaigh, Brian | Article in Journal | | 2007 |
| Priestly fictions : popular Irish novelists of the early 20th century. Patrick A. Sheehan, Joseph Guinam, Gerald O'Donovan | Candy, Catherine | Monograph or Collective Volume | Wolfhound Press | 1995 |
| Priests and people in pre-famine Ireland | Connolly, Sean J. | Monograph or Collective Volume | | 1981 |
| Priests and political activity in county Clare, 1800-1829 | Murphy, Ignatius | Article in Journal | | 1984 |
| Priests and proselytism in 19th-century Dublin | Johnson, Máirín | Article in Book | | 1992 |
| Priests and religious of Killaloe parish, Co. Clare | Kierse, Sean | Monograph or Collective Volume | Boru Books | 2000 |
| Priests in the independence movement of '98 | Hayes, Richard J., 1902- | Article in Journal | | 1945 |
| Priests in the independence movement, 1796-8 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1946 |
| Priests of 'ninety-eight' | de Vál, Seamus S. | Article in Journal | | 1997 |
| Priests of Armagh, 1834-2013 | Ó Fiaich, Tomás | Article in Book | | 2013 |
| Priests of Artrea | Ó Doibhlin, Diarmaid | Article in Journal | | 1980 |
| Priests of Derry 1820-1905 | Daly, Edward | Article in Journal | | 1980 |
| Priests of the diocese of Kilmore : Father Felix McCabe (c.1750-1816) | O'Connell, Philip | Article in Journal | | 1961 |
| Priests who died in the great famine | Grace, Daniel | Article in Journal | | 1997 |
| Priests, pikes and patriots : the Irish Catholic church and political violence from the Whiteboys to the Fenians | Kerr, Donal A. | Article in Book | | 2000 |
| Priests, publicans and the Irish poor : ethnic enterprise and migrant networks in mid-nineteenth-century Liverpool | Belchem, John | Article in Journal | | 2005 |
| Primary education | Murphy, Ignatius | Article in Book | | 1968 |
| Primate George Dowdall and the Marian restoration | Jefferies, Henry A. | Article in Journal | | 1998 |
| Primate Lombard and James I | Silke, John J. | Article in Journal | | 1955 |
| Prince Hohenlohe, Signor Pastorini and miraculous healing in early nineteenth-century Ireland | Geary, Laurence M. | Article in Book | | 1999 |
| Prince of the church : Patrick Francis Moran, 1830-1911 | Ayres, Philip | Monograph or Collective Volume | Miegunyah Press | 2007 |
| Printed Translations and Catholic Reformation | Goodrich, Jaime | Article in Book | | 2023 |
| Prison letters of Canon O'Kennedy | O'Kennedy, William, Canon | Article in Journal | | 2013 |
| Pro fide et patria?: the Catholic church and republicanism in Ireland, 1912-23 | O'Reilly, Noel | Thesis | | 1994 |
| Problems common to both protestant and catholic churches in eighteenth-century Ireland | Johnston, E. M. | Article in Book | | 1983 |
| Proclamation against Patrick MacCowan, priest, 16 July 1583 | | Article in Journal | | 1983 |
| Professor F. X. Martin O.S.A. (1922-2000) | W., P. F. | Article in Journal | | 2000 |
| Profile of an immigrant bishop : the early career of John Hughes | Lannie, Vincent Peter | Article in Journal | | 1965 |
| Progress in Reducing Catholic Disadvantage in Northern Ireland | Li, YaojunO'Leary, Richard | Article in Journal | | 2007 |
| Proposals to register Irish priests, 1756-7 | Brady, John, d.1963 | Article in Journal | | 1962 |
| Propugnaculum Catholicae veritatis | Bruodino, Antonio | Monograph or Collective Volume | [s.n.] | 1669 |
| Proselytism and perversion in West Clare | Power, Joe | Article in Journal | | 2006 |
| Prosopography of Irish students admitted to the Irish College, Rome, 1628-1798 [with index] | Binasco, MatteoOrschel, Vera | Article in Journal | | 2013 |
| Prosopography of staff of the Irish College, Paris c.1800-1939 | Begadon, Cormac | Article in Journal | | 2017 |
| Protestant 'ideology', reconsidered : the case of discrimination | Nelson, S. | Article in Journal | | 1975 |
| Protestant - Catholic - Jew : an essay in American religious sociology | Herberg, Will | Monograph or Collective Volume | Doubleday | 1955 |
| Protestant Action and the Edinburgh | Rosie, Michael | Article in Book | | 2008 |
| Protestant and Catholic attitudes towards poverty : the Irish community and the development of the Saint Vincent de Paul Society in nineteenth-century Toronto | Parthun, Mary Lassance | Article in Book | | 1988 |
| Protestant form and Catholic fiction? | Vance, Norman | Article in Book | | 2005 |
| Protestant London, no Popery and the Irish poor, 1830-60 | Gilley, Sheridan | Article in Journal | | 1971 |
| Protestant reformations, 1550–1641 | Lennon, Colm | Article in Book | | 2018 |
| Protestant, Catholic and Dissenter : the clergy and 1798 | | Monograph or Collective Volume | Columba | 1997 |
| Protestants in a Catholic state : a silent minority in Ireland | Mennell, Stephen | Article in Book | | 2000 |
| Protestants in a Catholic state : Ireland's privileged minority | Bowen, Kurt | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Protestants, Catholics and Loyalty : an aspect of the conscription controversies, 1916-17 | Gilbert, Alan D. | Article in Journal | | 1971 |
| Protestants, Catholics, and university education: Trinity College Dublin in the age of revolution | Power, Thomas P | Monograph or Collective Volume | Wipf and Stock | 2023 |
| Proudly Irish : Susan Carthy of Bawnboy | Mannion, Patricia Jean | Article in Journal | | 1991 |
| Providence and exile in early seventeenth-century Ireland | Caball, Marc | Article in Journal | | 1994 |
| Providence my guide : the heroic force in the Knock shrine story | Coyne, JudyKennedy, Ethna | Monograph or Collective Volume | Mercier Press | 2004 |
| Providence, revolution and the conditional defence of the union : Paul Cullen and the Fenians | Kelly, Matthew | Article in Book | | 2011 |
| Provincial rivalries in eighteenth-century Ireland : an Irish Augustinian document | | Article in Journal | | 1972 |
| Psalms and slaughter : a study in bigotry | Grey, Tony | Monograph or Collective Volume | Heinemann | 1972 |
| Pseudo-Dionysius, Gilbert of Limerick and Innocent III : order, power and constitutional construction | Williamson, Shannon M. O. | Article in Book | | 2006 |
| Public Catholicism | O'Brien, David | Monograph or Collective Volume | Macmillan | 1989 |
| Public opinion and the foundation of the Catholic University of Ireland | Vale, Mary | Thesis | | 1952 |
| Public presence, public silence : nuns, bishops, and the gendered space of early Chicago | Brosnan, K. A. | Article in Journal | | 2004 |
| Public rituals and community power : St Patrick's Day parades in Lowell, Massachusetts, 1814-1874 | Marston, S. A. | Article in Journal | | 1989 |
| Public support of Catholic education in New York, 1825-42, some new aspects | Browne, Henry J. | Article in Journal | | 1953 |
| Publications of Irish catholic interest, 1700-1800 : an experimental check-list | Fenning, Hugh | Monograph or Collective Volume | | 1973 |
| Publishing for Catholic Ireland | McCarthy, Andrew | Article in Book | | 2011 |
| Pugin and Maynooth College | Gallagher, Caroline | Article in Book | | 2012 |
| Pugin at Maynooth : the neo-Gothic contribution of A. W. N. Pugin to Maynooth College | | Monograph or Collective Volume | St Patrick's College, Maynooth|NUI Maynooth | 2012 |
| Pulp facts and core fictions : translating a cathedral from Aghaboe to Kilkenny | Bradley, John, 1954-2014 | Article in Book | | 2015 |
| Pulpits and politics : anti-Catholicism in Boston in the 1880s and 1890s | Kennedy, Laurence | Article in Journal | | 2000 |
| Purity of blood and purity of faith in early modern Ireland | Downey, Declan M. | Article in Book | | 2005 |
| Putting hand to the plough : a memoir | O'Callaghan, Denis | Monograph or Collective Volume | Veritas | 2007 |
| Quis Separabit : The Order of St. Patrick and Anglo-Irish Relations, 1922-34 | Goldstein, Erik D. | Article in Journal | | 1989 |
| Rabharta agus mallmhuir i mBéal Feirste | Mac Maoláin, Breandán | Monograph or Collective Volume | Coiscéim | 2016 |
| Race et religion : les Acadians et la hiérarchie Catholique Irlandaise du Nouveau-Brunswidk | Spigelman, Martin S. | Article in Journal | | 1975 |
| Racism, religion and social prejudice : Irish Catholic clubs, soccer and Scottish society. 1 : the historical root of prejudice; 2 : social identities and conspiracy theories | Finn, G. P. T. | Article in Journal | | 1991 |
| Radharc ar gcúl : A backward glance. Foras Feasa ar Éirinn and the historical origins of Irish Catholic identity | Cunningham, Bernadette | Article in Journal | | 2001 |
| Raising Dublin, raising Ireland : a friar's campaigns : Father John Spratt, O.Carm. (1796-1871) | D'Arcy, Fergus A. | Monograph or Collective Volume | Irish Province of Carmelites | 2018 |
| Raising the Irish Militia | Fitzsimons, Fiona | Article in Journal | | 2022 |
| Raphoe Diocesan Archives | Hughes, Moira | Article in Journal | | 2017 |
| Rath Church of the Sacred Heart. Foundation stone of the Church of the Sacred Heart, Rath, laid in 1877 | Walsh, Jack | Article in Journal | | 2010 |
| Rathcoole : 1799 parish priest transported to Australia | Moloney, Maeve Mulryan | Article in Journal | | 1999 |
| Rathnew Corpus Christi procession diary 1945-54|Rathnew Corpus Christi procession diary 1956-64 | O'Reilly, Stan J. | Article in Journal | | 2006 |
| Re-organisation of the dioceses of Kilfenora, Kilmacduagh, Galway and Killaloe, 1852-1883 | Murphy, Ignatius | Article in Journal | | 1984 |
| Réamann Ó Gallachair, bishop of Derry | Bonner, Brian | Article in Journal | | 1974 |
| Réamonn Ó Gallachair, bishop of Derry | Bonner, Brian | Article in Journal | | 1974 |
| Reapers of the harvest : the Redemptorists in Great Britain and Ireland 1843-1898 | Sharp, John | Monograph or Collective Volume | Veritas | 1989 |
| Reassessing Paul Cullen : an afterword | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2011 |
| Rebel, priest and prophet : a biography of Dr. Edward McGlynn | Bell, Stephen | Monograph or Collective Volume | Hyperion | 1975 |
| Rebellious Devotion
Catholicism and the Limits of Modernism | Cronin, Michael G. | Article in Book | | 2019 |
| Rebels and confederates : the stance of the Irish clergy in the 1640s | Ó hAnnracháin, Tadhg | Article in Book | | 1997 |
| Recalling the past | Power, William | Article in Journal | | 2001 |
| Recent developments in Catholicism : A survey of Catholicism in modern Ireland | Singleton, Steven | Article in Journal | | 2003 |
| Reclaiming the Irish Church | Dooley, Mark | Article in Journal | | 2015 |
| Recollections of a writer by accident | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 2002 |
| Recollections of an Irish Poor Clare in the seventeenth century : Mother Mary Bonaventure, third abbess of Galway, 1647-1650 | Browne, Mary BonaventureO'Brien, Celsus | Monograph or Collective Volume | Poor Clares | 1993 |
| Recollections of the Famine | O'Brien, Pat | Article in Journal | | 2005 |
| Reconstructing Catholic family history | O'Toole, James M. | Article in Journal | | 1990 |
| Reconstruction de l'Église catholique en République d'Irlande | Vandewoude, Déborah | Article in Journal | | 2014 |
| Records of the Irish College, Rome, under Jesuit administration | | Article in Journal | | 1964 |
| Rectors of the Irish College of Salamanca, 1705-67 | Finegan, Francis | Article in Journal | | 1968 |
| Recusancy and counter-reformation | Lennon, Colm | Article in Book | | 2006 |
| Recusancy and the Dublin Stanyhursts | Lennon, Colm | Article in Journal | | 1975 |
| Recycling an island's past for a global Catholicism : Irish Franciscans in the seventeenth century | McCafferty, John | Article in Book | NA | 2022 |
| Rededication of St Mary’s Church, Mullaghbawn 4th April, 1982 | Ó Fiaich, Tomás | Article in Journal | | 1990 |
| Reflections of a Newry-born priest who was secretary to three pontiffs | Magee, John | Article in Journal | | 1989 |
| Reflections on a quiet rebel | McCrystal, Cal | Monograph or Collective Volume | Michael Joseph | 1997 |
| Reform and reaction in sixteenth-century Ulster | Morgan, Hiram | Article in Book | | 1994 |
| Reform, instruction, and practice: the impact of the Catholic Revival on the laity in the Dublin diocese, 1793-1853 | O'Driscoll, Katherine | Thesis | | 2016 |
| Reform, renewal and vindication : Irish immigrants and the Catholic total abstinance movement in antebellum Philadelphia | Jeffrey, Edith | Article in Journal | | 1988 |
| Reform, Revolution and Reaction: Archbishop John Thomas Troy and the Catholic Church in Ireland 1787-1817 | McNally, Vincent J. | Monograph or Collective Volume | University Press of America | 1995 |
| Reform, revolution, and reaction : Archbishop John Thomas Troy and the Catholic Church in Ireland, 1787-1817 | McNally, Vincent J. | Monograph or Collective Volume | University Press of America | 1995 |
| Reforma Católica en Irlanda | Aldea Vaquero, Quintín | Article in Book | | 2002 |
| Reformation in Britain and Ireland | Heal, Felicity | Monograph or Collective Volume | Oxford University Press | 2003 |
| Reformation in Elizabethan Waterford | Byrne, Niall | Article in Journal | | 2001 |
| Reforming education in post-partition Northern Ireland : state control and churches’ interference | Biaggi, Cecilia | Article in Journal | | 2020 |
| Reforming Irish manners : the religious societies in Dublin during the 1690s | Barnard, T. C. (Toby Christopher) | Article in Journal | | 1992 |
| Regionalism and localism : religious change and social protest, c.1700-c.1900 | Proudfoot, Lindsay J. | Article in Book | | 1993 |
| Regions and religions in Ireland | Anderson, J. | Article in Journal | | 1980 |
| Registers of a Midland parish, 1791-1810: Ballinahown, County Offaly and County Westmeath [with index] | | Article in Journal | | 2012 |
| Registration of Popish clergy, 1703 : incident in Howth, 1710 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1950 |
| Relación de los puntos principales de la grave persecución que los Catholicos de Reyno de Irlanda padecen de los Hereges forasteros | Anonymous | Monograph or Collective Volume | [s.n.] | #|- |
| Relations between the French, Irish and Scottish clergy in the maritime provinces, 1774-1836 | Wade, Mason | Article in Journal | | 1972 |
| Relics and the past : the material culture of Catholic martyrdom in Ireland | Tait, Clodagh | Article in Book | | 2009 |
| Religion and history | Devine, Thomas Martin | Article in Journal | | 1983 |
| Religion and identity - the Irish dillema | O'Connor, Thomas | Article in Journal | | 1999 |
| Religion and identity : the church and Irish independence | O'Callaghan, Margaret | Article in Journal | | 1983 |
| Religion and land tenure in eighteenth-century Ireland : tenancy in the south-east | Gahan, Daniel | Article in Book | | 1990 |
| Religion and money : Irish regular colleges in the Roman Republic of 1798-99 | Harvey, Karen J. | Article in Journal | | 1993 |
| Religion and politics at the turn of the millennium | FitzGerald, Garret | Article in Book | | 2003 |
| Religion and politics in a provincial town : Belfast, 1660-1720 | Gillespie, Raymond, 1955-2024 | Article in Book | | 2016 |
| Religion and secular thought 1850-75 | Brooke, Peter | Article in Book | | 1983 |
| Religion and sexual culture in Ireland | Fahey, Tony | Article in Book | | 1999 |
| Religion and social inequality in Ireland | Cohen, Marilyn | Article in Journal | | 1994 |
| Religion and society in nineteenth-century Ireland | Connolly, Sean J. | Monograph or Collective Volume | Dundalgan Press | 1985 |
| Religion and society, 1600-1914 | Connolly, Sean J. | Article in Book | | 2013 |
| Religion and state in seventeenth-century Ireland | Ryan, C. | Article in Journal | | 1975 |
| Religion and the Constitution of the Irish Free State | Mohr, Thomas | Article in Book | | 2021 |
| Religion and the Irish cinema | Brereton, Pat | Article in Journal | | 2008 |
| Religion and the Irish migrant | Kells, Mary | Article in Journal | | 1994 |
| Religion and the nationalist cause in the thought of Patrick Pearse | Marsden, John | Article in Journal | | 1995 |
| Religion and the Northern Ireland problem | Hickey, John | Monograph or Collective Volume | Gill & Macmillan | 1984 |
| Religion and the rise of mass immigration : the Irish community in New York City, 1815 to 1840 | Kenny, Kevin, 1960- | Article in Journal | | 1990 |
| Religion community relations and constructive unionism : the Arklow disturbances of 1890-92 | Doherty, Martin | Article in Book | | 2005 |
| Religion in America | Sperry, Willard Learoyd | Monograph or Collective Volume | University P. | 1945 |
| Religion in Ireland | Connolly, Sean J. | Article in Book | | 2002 |
| Religion in Ireland : the empirical situation | Steven, David | Article in Book | | 2004 |
| Religion in modern Ireland | Gilley, Sheridan | Article in Journal | | 1992 |
| Religion in Victorian Britain, 1 : traditions; 2 : controversies; 3 : sources; 4 : interpretations. 4 vols. | | Monograph or Collective Volume | | 1988 |
| Religion, class and identity : the state, the Catholic Church and the education of the Irish in Britain | Hickman, Mary J. | Monograph or Collective Volume | Avebury | 1995 |
| Religion, culture and values : a cross-cultural analysis of motivational factors in Native Irish and American Irish Catholicism | Biever, Bruce Francis | Monograph or Collective Volume | Arno Press | 1976 |
| Religion, ethnicity and colonialism as explanations of the Northern Ireland conflict | Clayton, Pamela | Article in Book | | 1998 |
| Religion, ethnicity and “conversion” in the 1641 Irish rebellion | Redmond, Joan | Article in Journal | | 2020 |
| Religion, identity, state and society | Inglis, Tom | Article in Book | | 2005 |
| Religion, Ireland : in mutation | O'Leary, Joseph S. | Article in Book | | 1988 |
| Religion, Politics and Socio-Cultural Change in Twentieth-Century Ireland | Fuller, Louise | Article in Journal | | 2005 |
| Religion, politics and the Irish rising of 1641 | Canny, Nicholas P. | Article in Book | | 1997 |
| Religion, Protestants and national identity : a response to the March 2009 issue | Dingley, James | Article in Journal | | 2013 |
| Religion, radicalism and rebellion in nineteenth-century Ireland : the case of Thaddeus O'Malley | D'Arcy, Fergus A., 1943- | Article in Book | | 1997 |
| Religion, truth, national identity and social meaning : the example of Northern Ireland | Dingley, James | Article in Journal | | 2009 |
| Religious affiliation and the immigrant experience : Catholic Irish and Protestant highlanders in Glasgow, 1830-1850 | Sloan, William | Article in Book | | 1991 |
| Religious affinity and class difference in two-famine poems from Young Ireland | Parr, Katherine | Article in Book | | 2005 |
| Religious ambivalence in May Laffan's Hogan, M.P. | Hampton, Jill Brady | Article in Book | | 2005 |
| Religious cleavage and aspects of Catholic identity in modern Scotland | Bradley, Joseph M. | Article in Journal | | 1995 |
| Religious conflict in Ulster, c. 1780-1886 | Holmes, Andrew R., 1977- | Article in Book | | 2013 |
| Religious Formation of the Laity at the Catholic University of Ireland | Rupert, Jane | Article in Journal | | 2006 |
| Religious history | Miller, David William, 1940- | Article in Book | | 2005 |
| Religious intolerance under home rule : some opinions of leading Irish Protestants | MacSwiney, Terence | Monograph or Collective Volume | [s.n.] | 1911 |
| Religious legacies | O'Doherty, Malachi | Article in Book | | 2004 |
| Religious observation in everyday life | MacMahon, Bryan | Article in Book | | 2012 |
| Religious orders and congregations in Great Britain and Ireland | Anson, Peter Frederick, 1889-1975 | Monograph or Collective Volume | Abbey Press | 1950 |
| Religious persecution in the Diocese of Ferns. 1558-1625 | O Suilleabhain, D. B. | Article in Journal | | 1948 |
| Religious persecution in the seventeenth century : the Friars of Kilkeedy | Ó Dálaigh, Brian | Article in Journal | | 2007 |
| Religious polarization and sectarianism in the Ulster rebellion | Elliott, Marianne | Article in Book | | 2003 |
| Religious renewal and reform in the pastoral ministry of Bishop James Doyle of Kildare and Leighlin | McGrath, Thomas | Monograph or Collective Volume | Four Courts | 1998 |
| Religious renewal and reform in the pastoral ministry of James Doyle, O.S.A., bishop of Kildare and Leighlin, 1819-1834 | McGrath, Thomas G. | Thesis | | 1987 |
| Religious residential segregation in urban County Derry 1831-1991 : a study of variation in space and time | Poole, Michael A. | Article in Book | | 1999 |
| Religious revival and popular evangelicalism in Britain and Ireland, 1859-1905 | Holmes, Janice | Thesis | | 1995 |
| Religious rivalry and the making of Irish-American identity | Whelan, Irene | Article in Book | | 2006 |
| Religious tensions in National Schools 1830-1861 | Hoban, James | Article in Journal | | 1998 |
| Religious toleration and the relaxation of the penal laws : an imperial perspective, 1763-1780 | Hill, Jacqueline R. | Article in Journal | | 1989 |
| Religious violence against settlers in south Ulster, 1641-2 | Mac Cuarta, Brian | Article in Book | | 2007 |
| Religious wars in Ireland : plantations and martyrs of the Catholic church | Lennon, Colm | Article in Book | | 2002 |
| Relinquishing educational dominance : the Catholic church and Irish secondary schools, 1829-1989 | Stack, Annetta | Article in Journal | | 2000 |
| Relocation of Elmbank Cemetery, Toronto, Canada, 2004 | Barber, Doreen née O'Donnell | Article in Journal | | 2006 |
| Remembering Canon McGarry | Ryan, ThomasStuart, Imogen | Article in Journal | | 1980 |
| Remonstrantia Hibernorum contra Louvanienses, 1665 | Caron, Redmond
| Monograph or Collective Volume | Gregg | 1970 |
| Removete Lapidem! ('Remove the stone!') | Ó Hannracháin, Tadhg | Article in Book | | 2013 |
| Rendering to God and Caesar : the Irish churches and the two states in Ireland | Ó Cornáin, Dáithí | Thesis | | 2004 |
| Renovation of St. Malachy's Church, Armagh, 2004-2005 | Murphy, Pádraig | Article in Book | | 2013 |
| Repeal and the Roman Catholic clergy in county Meath 1840-1845 | Connell, Paul | Article in Journal | | 1984 |
| Repeal, popular politics, and the Catholic clergy of Cork, 1840-50 | Cronin, Maura (née Murphy) | Article in Journal | | 1977 |
| Repealing the Penal Laws, 1760-95 | Kelly, James, 1959- | Article in Book | | 2021 |
| Report of Bishop McDonagh, 1741 | McDonagh, Michael | Article in Journal | | 1965 |
| Report on the archives of the Sisters of Our Lady of Charity and Refuge | Perry, Victoria | Article in Journal | | 2007 |
| Representations of madness in Irish society in the Drama of Brian Friel | Kennedy, Michelle | Article in Journal | | 2012 |
| Representations of the Irish Church Missions in mid-neneteenth century Kilkenny city: image and text | Cherry, Jonathan | Article in Journal | | 2018 |
| Republic of shame : stories from Ireland's institutions for 'fallen women' | Hogan, Caelainn | Monograph or Collective Volume | Penguin Ireland | 2019 |
| Republican dissent among Irish Jesuits during the Civil War, 1922-1923 | Frehill, Olivia | Article in Journal | | 2018 |
| Republican dissent among Irish Jesuits during the Civil War, 1922-23 | Frehill, Olive | Article in Journal | | 2018 |
| Republicanism in American Catholicism, 1785-1860 | Casey, Patrick | Article in Journal | | 1983 |
| Resistance and Respectability : Dilemmas of Irish Migrant Politics in Victorian Britain | Busteed, Mervyn A. | Article in Journal | | 2009 |
| Restoration | Williams, Mark R.F. | Article in Book | Oxford University Press | 2023 |
| Resurgence of Catholic orders in Limerick | Noonan, Emer | Article in Book | | 2000 |
| Rethinking Irish history : nationalism, identity and ideology | Campling, JoDelanty, GerardO'Mahony, Patrick | Monograph or Collective Volume | Macmillan | 1998 |
| Return of the repressed? "Haunted Castles" in seventeenth-century Munster | Tierney, Andrew | Article in Journal | | 2010 |
| Returning to core principles | McDermott, Yvonne | Article in Journal | | 2007 |
| Returning to its 'old form' : Roman Catholic church renewal and inter-church relations in South Tipperary, 1730-1840 | Butler, David J., 1976- | Article in Journal | | 2007 |
| Rev John Barry: champion of the poor | Ó Cathaoir, Brendan | Article in Journal | | 2012 |
| Rev. Daniel W. Cahil D. D., 1796-1864 | Smith, Peter | Article in Journal | | 1999 |
| Rev. Dr John Boyce ('Paul Peppergrass' 1810-1864) | McNamara, G. M. | Article in Journal | | 1965 |
| Rev. Dr. James O'Fallon, Bishop of Elphin 1756-1786 | Gacquin, William | Article in Journal | | 1996 |
| Rev. Edmund Hogan, S.J. | Hogan, William | Article in Journal | | 1965 |
| Rev. Fr. Patrick O'Kelly | Irwin, Alice | Article in Journal | | 2003 |
| Rev. James O'Coigley, United Irishman | Simms, Samuel | Article in Journal | | 1937 |
| Rev. John Smyth C.C. (1791-1858) | Kingston, John | Article in Journal | | 1971 |
| Rev. Louis O'Kane (1905-1973) and his revolutionary recordings of Irish Volunteers : Aspects of south and east Tyrone on tape | McAnallen, Dónal | Article in Journal | | 2016 |
| Rev. Professor T. A. Finlay, S. J. | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Rev. Thomas MacNamara | Kelly, Joseph P. | Article in Journal | | 1974 |
| Reverend James Parle (1811-1870) | De Vál, Seamus S. | Article in Journal | | 1995 |
| Reverend Robert Winning and the Second Reformation in the Kingscourt district: the Irish Society's Bible schools | Rogan, Marion | Article in Journal | | 2023 |
| Review article. Ireland's difficulty, the noverlist's opportunity | Ryder, Sean | Article in Journal | | 2008 |
| Review article. Religion, war and identity in Ireland | Townshend, Charles | Article in Journal | | 2003 |
| Review article: Canada's sectarian past | Fitzpatrick, David | Article in Journal | | 2018 |
| Review Essay. Letter from Glasgow. Where the streets have no shame | Maley, Willy | Article in Journal | | 2006 |
| Review of Kavanagh S. J. and White, N. B., 'Commentarius Rinuccinianus, Vol. 6, | Brady, John, d.1963 | Article in Journal | | 1951 |
| Review of Mooney (C.), 'Boethius Mac Egan of Ross' 1950 | Grosjean, Paul | Article in Journal | | 1951 |
| Review of Southern (A.C.), 'Elizabethan recusant prose' 1950 | Allison, A. F.Rogers, D. M. | Article in Journal | | 1951 |
| Revisionism or reality? Daniel Mannix in ADB 10 | Griffin, James | Article in Book | | 1996 |
| Revival of re-invention : Columban traditions in nineteenth-century Derry | Lacey, Brian | Article in Journal | | 2004 |
| Revolution and Catholicism in Ireland, 1848-1922 | Newsinger, John | Article in Journal | | 1979 |
| Revolution of silence: the case of Jenico Preston, 15th Viscount Gormanston (1879-1925) | McMahon, Timothy G.
| Article in Journal | | 2014 |
| Revolutionary and Refractory?
The Irish Colleges in Paris and the French Revolution | Chambers, Liam | Article in Journal | | 2008 |
| Ribbonism in Tyholland Parish (1820-1840) | Gilmore, Brian | Article in Journal | | 2015 |
| Ribbonism or agrarian troubles in south Armagh | Murphy, Kevin | Article in Journal | | 1974 |
| Richard Arthur, bishop of Limerick | Moloney, Michael | Article in Book | | 1951 |
| Richard Baptist O'Brien, dean of Limerick (1809-1885) | Manley, Edward Joseph | Thesis | | 1991 |
| Richard Brady OFM, bishop of Kilmore, 1580-1607 | Fennessy, Ignatius | Article in Journal | | 2000 |
| Richard Canon Aylward | Walton, Julian | Article in Journal | | 1978 |
| Richard Colley Wellesley : an Anglo-Irish advocate of Catholic emancipation | Demichele, M. D. | Article in Journal | | 1970 |
| Richard Stanihurst (1547-1618) and Old English identity | Lennon, Colm | Article in Journal | | 1978 |
| Richard Stanihurst (1547-1618): Dublin's earliest historian | Lennon, Colm | Article in Journal | | 2020 |
| Richard Stanihurst the Dubliner 1547-1618 : a biography with a Stanihurst text on Ireland's past | Lennon, Colm | Monograph or Collective Volume | Irish Academic Press | 1981 |
| Richard Stanihurst's "Spanish Catholicism" : ideology and diplomacy | Lennon, Colm | Article in Book | | 2002 |
| Richard Talbot, earl of Tyrconnell (1630-91) and the Catholic counter-revolution | McGuire, James | Article in Book | | 1989 |
| Right Reverend John Barry second bishop of Savannah | Rezek, Patricia J. | Article in Journal | | 1990 |
| Rights, Revolutions, Republics, 1750-1850 : the work and works of William Sampson (1764-1836) : a chronology | Walsh, Walter J. | Article in Journal | | 2014 |
| Rinuccini and civil war in Ireland, 1644-49 | Boyd, Andrew, 1921- | Article in Journal | | 1991 |
| Rinuccini in Galway, 1647-49 | O'Riordan, Seán | Article in Journal | | 1948 |
| Rinuccini's censure of 27 May 1648 | Corish, Patrick J. | Article in Journal | | 1951 |
| Riots, rescues and 'grene bowes' : Catholics and protest in Ireland, 1570-1640 | Tait, Clodagh | Article in Book | | 2013 |
| RMS Titanic - Dungiven connection | Hasson, Seamus | Article in Journal | | 2012 |
| Robert Walsh : his story | Lochemes, M. Frederick | Monograph or Collective Volume | American Irish Historical Society | 1941 |
| Roman Catholic church architecture in Great Britain and Ireland, 1829-1878 | O’Donnell, R. M. | Thesis | | |
| Roman Catholic dispensation records and genealogy in Brooklyn in the nineteenth century | Silinonte, Joseph M. | Article in Journal | | 1998 |
| Roman Catholic nuns in England and Wales, 1800-1937 : a social history | Walsh, Barbara, 1932- | Monograph or Collective Volume | Irish Academic Press | 2002 |
| Roman Catholicism and the Irish in England | Gilley, Sheridan | Article in Journal | | 1999 |
| Roman Catholicism and the Irish in England | Gilley, Sheridan | Article in Book | | 2000 |
| Roman Catholics in Scotland in the 19th and 20th centuries | McCaffrey, John F. | Article in Journal | | 1983 |
| Rome and Irish Catholicism in the Atlantic World, 1622–1908 | NA | Monograph or Collective Volume | Palgrave Macmillan | 2019 |
| Rome and the British veto, 1829-47 | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1951 |
| Rome and the Irish Catholic community in the Eighteenth Century, 1691–1789 | Chambers, Liam | Article in Book | | 2019 |
| Rome as part of the Irish North Atlantic experience, 1770–1830 | Codignola, Luca | Article in Book | | 2019 |
| Rome rule : a paper read at a meeting of the Young Ireland branch, U.I.L., 1911 | Little, Patrick J. | Monograph or Collective Volume | Gill | 1913 |
| Room 254 and Fr. John Walsh of Bandon (d. 1964) | Shortall, John | Article in Journal | | 2007 |
| Roots of conflict in Ireland | Berlatsky, Joel | Article in Journal | | 1983 |
| Roots of sectarianism in Ireland : chronology and reflections | Liechty, Joseph | Monograph or Collective Volume | Dr. Joseph Liechty | 1993 |
| Rosa Mulholland, W.P. Ryan and Irish Catholic fiction at the time of the Anglo-Irish revival | Murphy, James H. | Article in Book | | 1995 |
| Roscrea : a history of the Catholic parish of Roscrea from the earliest times to the present day, with some account of the territories of Uí Ciarin and Éile Uí Cearbhaill | Gleeson, Dermot F. | Monograph or Collective Volume | Three Candles | 1947 |
| Rosscarbery and its origins: [Part one]|Rosscarbery and its origins: Part two|Rosscarbery and its origins: Part three | O'Mahony, Michael | Article in Journal | | 2010 |
| Rosscarbery woman lives mission dream | McCarthy, Mary Hayes | Article in Journal | | 2000 |
| Roundtable discussion : the history of British and Irish Catholicism : past, present and future | | Article in Journal | | 2022 |
| Rule Etonia : educating the Irish Catholic elite 1850-1900 | O'Neill, Ciaran | Thesis | | |
| Rules and regulations for the Catholic school in Monaghan | Mulligan, Patrick | Article in Journal | | 1978 |
| Rum, romanism, and evangelism : Protestants and Catholics in late-nineteenth-century Boston | Bendroth, M. | Article in Journal | | 1999 |
| Running a stained glass studio in Youghal from 1894 to 1901: the early years of James Watson and company | Ryan, Vera | Article in Journal | | 2021 |
| Rural Catholic mobilisation in Ireland, 1850-1922 | O'Day, Alan | Article in Book | | 1993 |
| Rural deanery of Creggan, 1798 | Ó Muiri, Réamonn | Article in Journal | | 1989 |
| Sacred Heart Church, Borrisoleigh, 1893-1993 | Anonymous | Monograph or Collective Volume | # | 1993 |
| Sacred places and pilgrimage in the Archdiocese of Dublin | Liston, Bríd | Monograph or Collective Volume | Veritas | 2000 |
| Safeguarding Irish girls : welfare work, female emigrants and the Catholic Church | Redmond, Jennifer | Article in Book | | 2015 |
| Sagart gan iomrá; an tAthair Séamus Ó hEargáin | Ua Cnáimhsí, Pádraig | Article in Journal | | 1996 |
| Sailing from The Lowlands low | Tonra, Henry | Article in Journal | | 1994 |
| Saint de la Salle and the education of Irish youth | Battersby, W. J. | Article in Journal | | 1950 |
| Saint Eunan's Cathedral, Letterkenny, Co. Donegal | Harrison, Graham | Monograph or Collective Volume | Eason | 1988 |
| Saint Fachtna | Maguire, George | Article in Journal | | 2011 |
| Saint in overalls : the lesson of Matt Talbot | Duff, Edward | Article in Journal | | 1940 |
| Saint James and Father Tom : a saint and his priest | | Monograph or Collective Volume | Fr. Tom Lawlor Memorial Committee | 2004 |
| Saint Joseph's Mullaghard, Tynan (1813-2018) : a millennium church history | Brady, Patrick J. | Monograph or Collective Volume | Middletown & Tynan Historical Society | 2018 |
| Saint Mary's Church | Copps, J. | Article in Journal | | 1988 |
| Saint Mary's Church Aughnacloy | Cullinane, Joseph B. | Article in Journal | | 1994 |
| Saint Mary's Pro-Cathedral, Dublin | McCarthy, Dermot | Monograph or Collective Volume | Eason | 1988 |
| Saint Oliver Plunkett | Meagher, John | Monograph or Collective Volume | Irish Messenger Publications | 1977 |
| Saint Oliver Plunkett : journey to sainthood | Burns, Tommy | Monograph or Collective Volume | The author | 2014 |
| Saint Oliver Plunkett and Downside | Murphy, Martin | Monograph or Collective Volume | Downside Abbey | 1975 |
| Saint Patrick's Purgatory, Lough Derg | McGuinness, Joseph | Monograph or Collective Volume | Columba | 2000 |
| Saint Patrick, Animal Gangs and Blueshirts: Anto-communism in 1930s Dublin | Fallon, Donal | Article in Journal | | 2014 |
| Saints and Devotional Cultures | Heimann, Mary : Delay, Cara | Article in Book | Oxford University Press | 2023 |
| Saints' cults and the early Irish church | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 2007 |
| Saints, shamrocks and signifying practices: Aer Lingus and the materialization of Irish identity | KIng, Linda | Article in Journal | | 2011 |
| Salamanca letters : a catalogue of the Irish college of Salamanca correspondence between 1619-1870, in the library of Maynooth college, Ireland | Anonymous | Monograph or Collective Volume | St Patrick's College | 1994 |
| Salutatio-Omós. A tribute for Very Rev. Canon Edward J. Whyte, retired P.P. Cloughjordan, on the occasion of his golden jubilee | Murphy, Donal A. | Article in Journal | | 1996 |
| San Patricio y los irlandeses : el descubrimiento de una escultura | Hernández García, José Javier | Article in Journal | | 2007 |
| Sancti Isidori Visitatio Apostolica (1663). I Frati Minori irlandesi a Roma dopo Luke Wadding | Bellardini, DonatellaCostacurta, Claudia | Article in Journal | | 2015 |
| Sanguinea eremus martyrum Hiberniae ord. eremit. S.P. Augustini (1655). | O'Mahony, James, d.1666 | Article in Journal | | 1950 |
| Sarsfield : the man and the myth | Irwin, Liam | Article in Book | | 1995 |
| Sarsfield's defence of the Shannon 1690-91 | Mangan, Henry | Article in Journal | | 1949 |
| Saving the Pope: Tipperary's contribution to the "Irish Brugade" in 1860. Part One, Part Two | Marnane, Denis G. | Article in Journal | | 2010 |
| Schools and conflict | Murray, Dominic | Article in Book | | 1983 |
| Schools in Co. Kildare | de Bháldraithe, Eóin | Article in Journal | | 2015 |
| Scoileanna na mBráithre Críostaí : tradisiún mar aon le hathruithe | Ó Muirí, Micheál | Article in Book | | 1996 |
| Scotland : the famine and the development of the church in Scotland | Handley, J. E. | Article in Journal | | 1947 |
| Scotland in the antiquarian collection of the library of the Irish college in Paris | Caillet, Maurice | Article in Journal | | 1992 |
| Scotland, Ireland, and the antithesis of Enlightenment | O'Brien, Gerard | Article in Book | | 1995 |
| Scots and Irish clergy ministering to immigrants 1830-1878 | Aspinwall, Bernard | Article in Journal | | 1996 |
| Scots Catholics in Ulster, 1603-41 | Mac Cuarta, Brian | Article in Book | | 2016 |
| Scottish Catholic ancestors | Adolph, Anthony | Article in Journal | | 2009 |
| Scottish Catholicism 1560-2005 | Halloran, Brian M. | Article in Book | | 2005 |
| Scoundrels all -- priests and prelates in '98 | Keogh, Dáire | Article in Book | | 1998 |
| Scríbhinní Gaeilge na mBráthar Mionúr | Ó Cuív, Brian | Article in Book | | 1995 |
| Scripture politics : Ulster Presbyterians and Irish radicalism in the late eighteenth century | McBride, Ian | Monograph or Collective Volume | Clarendon Press | 1998 |
| Scripture reading among Irish Catholics in the nineteenth century | Moffitt, Miriam | Article in Book | | 2013 |
| Séamus Mhac Cúarta do chum an duan so don Easbog Ó Siadha[i] l | | Article in Journal | | 1939 |
| Séamus Ó Gallchobhair, easpag Ráth Bhoth, 1725-1737 | Ó hÉigeartaigh, Séamus P. | Article in Journal | | 1961 |
| Seán agus Tadhg Ó Neachtain: cleamhnas agus gaol | Ó Háinle, Cathal | Article in Journal | | 2005 |
| Seán Mac hÉil agus bochtaineacht an Iarthair | Ó Néill, Tadhg P. | Article in Book | | 1983 |
| Seán Mac hÉil, ardeaspag agus conspóidí : athbhreithniú | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1983 |
| Seán Mac Mathúna: Diarist and dedicated recorder of Clare tradition | Ó Héalaí, Pádraig | Article in Journal | | 2016 |
| Seán Ó Riada's Requiem do shaighdiúir | O'Keefe, John | Article in Book | | 2018 |
| Seanchas : Part two, an eminent Victorian : Alexander McCarthy 1803-1868 | MacCarthy, C. J. F. | Article in Journal | | 1990 |
| Seanmoireacht Ghaeilge san ochtu agus na naou haois deag | Ó Fiannachta, Pádraig | Article in Journal | | 1983 |
| Secondary education | Ó Súillebháin, S. V. | Article in Book | | 1971 |
| Secondary education | Ó Súilleabháin, Séamus | Article in Book | | 1968 |
| Secondary education in Ireland : 1870-1921 | McElligott, T. J. | Monograph or Collective Volume | Irish Academic Press | 1981 |
| Secret service of a past age : a captured Gaelic document | Lennon, Michael J. | Article in Journal | | 1948 |
| Sectarian conflict 1972-77 | Aughey, Arthur | Article in Book | | 1985 |
| Sectarian conflict in Monaghan | Micheau, Edward | Article in Book | | 1990 |
| Sectarian readings of sectarianism : interpreting the Northern Ireland census | Anderson, JamesShuttleworth, Ian | Article in Journal | | 1994 |
| Sectarianism : an optimistic prognosis | Heskin, Ken | Article in Journal | | 1989 |
| Sectarianism : division and dissent in Irish Catholicism | Jackson, Brian | Article in Book | | 2005 |
| Sectarianism and politics in modern Ireland | English, Richard, 1963- | Article in Book | | 2004 |
| Sectarianism and racism, and their parallels and differences | Brewer, John D. | Article in Journal | | 1992 |
| Sectarianism and the churches : the legacy and the challenge | Liechty, Joseph | Article in Book | | 1999 |
| Sectarianism at work : Accounts of employment discrimination against Irish Catholics in Scotland | Walls, PatriciaWilliams, Rory | Article in Journal | | 2003 |
| Sectarianism in 1798 and in Catholic nationalist memory | Donnelly, James S., Jr | Article in Book | | 2001 |
| Sectarianism in Marsh's Ireland : some literary evidence | Carpenter, Andrew | Article in Book | | 2004 |
| Sectarianism in the workplace : the case of the Derry shirt industry 1868-1968 | Finlay, Andrew | Article in Journal | | 1993 |
| Sectarianism spills over? The St Johnston riot of 1972 | Hanley, Brian | Article in Journal | | 2016 |
| Sectarianism, respectability and cultural identity: the St Patrick's Total Abstinence Society and Irish Catholic temperence in mid nineteenth century Sydney. | Allen, Matthew | Article in Journal | | 2011 |
| Sectarianism, segregation and politics on Clydeside in the later nineteenth century | Foster, JohnHouston, MuirMadigan, Chris | Article in Book | | 2008 |
| Secular Franciscans down the ages | Conlon, Patrick | Monograph or Collective Volume | Secular Franciscans | 1979 |
| Secular players : Catholic imagination, modern Irish writing and the case of John McGahern | Shovlin, Frank | Article in Book | | 2013 |
| Segregated schools : the research evidence | Darby, JohnDunn, Seamus | Article in Book | | 1987 |
| Segregation or integration? The residential experience of the Irish in mid-Victorian Britain | Pooley, Colin G. | Article in Book | | 1989 |
| Select bibliography relating to Armagh diocesan history | Anonymous | Article in Journal | | 1989 |
| Select bibliography relating to Armagh diocesan history | Anonymous | Article in Journal | | 1989 |
| Select bibliography relating to Armagh diocesan history | Canning, Joseph | Article in Journal | | 1988 |
| Select document: Catholic ownership of tithes: a County Wexford widow's dispensation, 1595 | Mac Cuarta, Brian | Article in Journal | | 2018 |
| Select documents XXII. Gladstone, Queen Victoria, and the disestablishment of the Irish Church, 1868-9 | NA | Article in Journal | | 1962 |
| Select documents XXXVIII. Defenders and Defenderism in 1795 | | Article in Journal | | 1985 |
| Select documents. Ormond's civic entry to Kilkenny, 29/31 August 1646 | | Article in Journal | | 2007 |
| Sellerna : a Connemara mission | Gageby, Patrick | Article in Journal | | 1993 |
| Selling royal favours, 1624-32 | Clarke, Aidan | Article in Book | | 1976 |
| Seraphic sparks : The Irish Franciscan and Capuchin Colleges on the Continent | Mac Craith, Mícheál | Article in Book | | 2018 |
| Sermon at Sean's Requiem Mass | Smith, Sean | Article in Journal | | 2002 |
| Services for 1950s Irish emigrants - Battleground for church, state and communism | Harvey, Brian | Article in Journal | | 2022 |
| Serving king and country : Armagh barracks, 1901 | McVeigh, Mary | Article in Journal | | 2004 |
| Serving the spiritual needs of the Irish diaspora in nineteenth-century America | Sullivan, Tom | Article in Journal | | 2008 |
| Setting the agenda for the press: The 1929 case against the Waterford Standard | Keating, Anthony | Article in Journal | | 2012 |
| Settlement conflict and community: Irish Protestant migrants on New Zealand's Pakeha Frontier 1870-1900 | Horn, Gerard | Article in Journal | | 2010 |
| Seventeen martyrs | Forristal, Desmond | Monograph or Collective Volume | Columba | 1990 |
| Seventeenth-century interpretations of the past : the case of Geoffrey Keating | Cunningham, Bernadette | Article in Journal | | 1986 |
| Seventeenth-century Irish catechisms : European or not | O'Reilly, Mary | Article in Journal | | 1996 |
| Sewn by candlelight : the Act of Union and Borough Schools of Swords | Marks, Bernadette | Monograph or Collective Volume | Swords Historical Society | 1998 |
| Sex and socialism: the class politics of immorality in pre-First-World-War Ireland | Ó Drisceoill, Donal | Article in Journal | | 2015 |
| Sex and the single girl in 1920s and 1930s Ireland | Luddy, Maria | Article in Journal | | 2007 |
| Sexism, the church, Irish women | Kenneally, James J. | Article in Journal | | 1986 |
| Sexton's Graveyard Book | Power, John | Article in Journal | | 2017 |
| Shamrock and sword : the Saint Patrick Batallion in the U.S - Mexican War | Miller, Robert, fl. 1755 | Monograph or Collective Volume | University of Oklahoma Press | 1989 |
| Shaped by silence : stories from the inmates of the Good Shepherd laundries and reformatories | Croll, Rie | Monograph or Collective Volume | ISER Books | 2019 |
| Sharing the word : a history of the Bible Society in Ireland | Cooney, Dudley A. Levistone | Monograph or Collective Volume | Columba | 2006 |
| Sharman Crawford, O'Connell and the tithe question 1834-8 | Kennedy, Brian A. | Article in Journal | | 1941 |
| Shay Colm's footsteps trod | Canning, B. J. (Bernard J.) | Article in Journal | | 1993 |
| Short histories of Dublin parishes, 3 - 5 | Donnelly, Nicholas | Monograph or Collective Volume | Carraig Books | 1977 |
| Shrine at Arklow rock. Impressive ceremony at historic site | Anonymous | Article in Journal | | 1994 |
| Sidelights on souperism | O'Neill, Thomas Patrick | Article in Journal | | 1949 |
| Sidelights on the Irish church, 1811-38 | Ó Súilleabháin, Pádraig | Article in Journal | | 1966 |
| Sienna convent Drogheda : the Portuguese connection | Kirwan, James | Article in Journal | | 1992 |
| Silbheaster Ó Coinne | Ó Muireadhaigh, Lorcán, an tAth. | Article in Book | | 2013 |
| Silver jubilee of the official opening & solemn dedication of St Joseph's church, Ballyjamesduff, Co. Cavan | Anonymous | Monograph or Collective Volume | St Joseph's Church | 1991 |
| Silver jubilee of the official opening and solemn dedication : St Mary's Church Swanlinbar | Hannon, Donald | Monograph or Collective Volume | St. Mary's Church Area Pastoral Council | 2003 |
| Sint-Truiden : Irish Franciscan documents | | Article in Journal | | 1963 |
| Sir Charles Percy [1572-1628] | Nicholls, Mark | Article in Journal | | 1987 |
| Sir Cyril Wyche and the popish plot 1678-80 | Fenning, Hugh | Article in Journal | | 2003 |
| Sir Humphrey Gilbert and American colonization | Simmons, Richard C. | Article in Journal | | 1969 |
| Sir Nicholas O'Conor - a world figure | Evans, J.A. | Article in Journal | | 1994 |
| Sir Patrick Branigan 1906-2000. A Drogheda man in the dying days of Empire | Reilly, Liam | Article in Journal | | 2014 |
| Sister Genevieve | Rae, John | Monograph or Collective Volume | Little Brown | 2001 |
| Sister Ina O'Donovan | O'Donovan, Donal | Article in Journal | | 2011 |
| Sisters and the creation of American Catholic identities | Thompson, Margaret Susan | Article in Book | | 2016 |
| Sisters of secession : the unclaimed legacies of two Southern American Irish women | Giemza, Bryan | Article in Journal | | 2010 |
| Sisters of St John of God in Australia, 1895-1965 | Brennan, Mary M. | Thesis | | 2003 |
| Sketches of the Pope's Irish Brigade - from the portfolio of a sub-officer | O'Shea, John Augustus | Article in Journal | | 2009 |
| Skryne lady for canonization | Anonymous | Article in Journal | | 1991 |
| SMA missionaries of Northern Nigeria, 1907-1934 | O'Connor, Edward | Monograph or Collective Volume | SMA Fathers | 2007 |
| Small differences : Irish Catholics and Irish Protestants 1815-1922 : an international perspective | Akenson, Donald Harman | Monograph or Collective Volume | McGill-Queen's University Press | 1988 |
| Social activist | Kavanagh, James | Article in Journal | | 1998 |
| Social structures of the Irish church : a new source in papal penitentiary dispensations for illegitimacy | Haren, Michael J. | Article in Book | | 1994 |
| Socialism and Catholicism in Ireland | Larkin, Emmet | Article in Journal | | 1985 |
| Socialism and Catholicism in Ireland | Larkin, Emmet | Article in Journal | | 1964 |
| Society and economy, 1815-70 | Connolly, Seán J. | Article in Book | | 2011 |
| Society of St. Vincent de Paul : conference of St. Columba 1903-2003 | Gilmartin, BrianO'Brien, B. | Monograph or Collective Volume | Society of St. Vincent de Paul | 2003 |
| Sociology, religion and 'the troubles' in Northern Ireland | Fulton, John | Article in Journal | | 1988 |
| Some afterthoughts on the Newman centenary celebrations | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1954 |
| Some aspects of Roman Catholic service in the land forces of the British Crown : c.1750 to c.1820 | Fontana, V. J. L. | Thesis | | |
| Some aspects of the Irish church in the eighteenth century | Brady, John, d.1963 | Article in Journal | | 1948 |
| Some aspects of the life of Doctor John Thomas Troy, O. P., 1739-1823 | Peel, H. E. | Article in Journal | | 1957 |
| Some aspects of the Reformation in Armagh province | Silke, John J. | Article in Journal | | 1984 |
| Some aspects of the response by the Roman Catholic church to the educational needs of the Irish poor in South London, 1840-70. | Winch, Francine | Thesis | | 1985 |
| Some aspects of the Siege of Derry | Faulkner, Anselm | Article in Journal | | 1988 |
| Some broadsides, chiefly from Cork, 1709-1821 | Fenning, Hugh | Article in Journal | | 1996 |
| Some Carpenter certificates in Madrid | McBride, Patrick P. | Article in Journal | | 1955 |
| Some Clogher clergy of the eighteenth century | Brady, John, d.1963 | Article in Journal | | 1957 |
| Some Connacht links with the 'Popish plot' | Brady, John, d.1963 | Article in Journal | | 1959 |
| Some county Cavan priests in Connecticut | O'Connell, Philip | Article in Journal | | 1965 |
| Some factors in the negotiations between Charles I and the confederation of Kilkenny | Lowe, John | Article in Journal | | 1961 |
| Some Ferns missionaries of bygone days | Gahan, John | Article in Book | | 1999 |
| Some Irish links with Sedan | Ó hAnnracháin, Eoghan | Article in Journal | | 2014 |
| Some Irish nuns in 18th century France | Barnwell, S. B. | Article in Journal | | 1991 |
| Some Irish prelates who lived or died in Belgium in the seventeenth century | Antheunis, Louis | Article in Journal | | 1955 |
| Some Irishmen in Belgium in past centuries | Antheunis, Louis | Article in Journal | | 1954 |
| Some Kilmore clergy of the 17th and 18th centuries | Brady, John, d.1963 | Article in Journal | | 1960 |
| Some letters from St John Henry Newman arising from his denunciation of Giacinto Achilli | Cunningham, John M. | Article in Journal | | 2020 |
| Some letters of Patrick Manogue, gold miner and bishop of Nevada and California | | Article in Journal | | 1960 |
| Some lists of Irish Franciscans in Prague 1656-1791 | Millett, Benignus | Article in Journal | | 1994 |
| Some lists of Kerry priests, 1750-1835 | De Brún, Pádraig | Article in Journal | | 1985 |
| Some medieval writings of the Irish Franciscans | Mooney, Canice | Article in Journal | | 1942 |
| Some members of the Confederation of Kilkenny | Cregan, Donal F. | Article in Book | | 1944 |
| Some MSS of Fr Thomas Lindlay Murray, P.P., Inniscara 1868-1891 | Whelton, Michael John | Article in Journal | | 2000 |
| Some nineteenth century roots of the Ulster problem, 1829-1848 | Cahill, G. A. | Article in Journal | | 1971 |
| Some noted priests of yesterday | Cassidy, James F. (James Francis), b. 1890 | Monograph or Collective Volume | Talbot Press | 1940 |
| Some notes and comments on 'The Irish Franciscan mission to Scotland' by the Rev. Cathaldus Giblin, O.F.M. | Campbell, J. L. | Article in Journal | | 1953 |
| Some observations on contemporary allegations as to bishop Dominick Bellew's (1745-1813) sympathies during the 1798 rebellion in Connaught | Hogan, Patrick | Article in Journal | | 1982 |
| Some priests and parsons of the Clones area, 1620-1840 | Ó Mórdha, Pilip | Article in Journal | | 1977 |
| Some priests' graves in Kilmurry old churchyard | MacHale, E. | Article in Journal | | 1990 |
| Some problems in the history of the Reformation | Corish, Patrick J. | Article in Journal | | 1955 |
| Some problems of the Irish mission, 1733-1774 : documents from Roman archives | | Article in Journal | | 1965 |
| Some recent contributions to Cork diocesan history | Collins, John T. | Article in Journal | | 1951 |
| Some records of the Irish College at Bordeaux | Walsh, T. J. (Timothy J.) | Article in Journal | | 1950 |
| Some sources concerning an Irish cleric in Argentina: Samiel O'Reilly (1840-1917) | | Article in Journal | | 2011 |
| Some unpublished letters of Cardinal Newman | | Article in Journal | | 1954 |
| Some unpublished letters of Mateo de Oviedo, archbishop of Dublin | | Article in Journal | | 1955 |
| Some Watson windows (1894-1931) in North Cork Churches | Ryan, Vera | Article in Journal | | 2018 |
| Something new on Blessed Patrick O'Hely, O.F.M. | Millett, Benignus | Article in Journal | | 2000 |
| Sound and fury : civil war dissent in the Cincinnati area | Klement, Frank L. | Article in Journal | | 1977 |
| Souper school in Tulla | McInerney, Raymond | Article in Journal | | 1993 |
| Sources for a history of Catholic life in Ireland, 1780-1850 | O'Neill, Thomas Patrick | Article in Journal | | 1960 |
| Sources for the history of the clergy of a diocese : seventeenth century Clogher | Gallagher, Patrick | Article in Journal | | 1957 |
| Sources for the history of the Irish College, Rome | Hanley, John | Article in Journal | | 1964 |
| Sources for the history of the Irish College, Rome | Hanly, John | Article in Journal | | 1964 |
| Sources of British and Irish history in the 'Instrumenta miscellanea' of the Vatican archives | Burns, C. S. (Charles S.) | Article in Journal | | 1971 |
| Sources of British and Irish history in the Instrumenta Miscellanea | Anonymous | Article in Journal | | 1971 |
| Sources relatives au débuts de Jansénisme et de l'Antijansénisme, 1640-1643 | Ceyssens, Lucien | Monograph or Collective Volume | Bibliothèque de l'Université | 1963 |
| South Africa | Doyle, F. B. | Monograph or Collective Volume | Gill | 1971 |
| South America | Canning, A. M. | Monograph or Collective Volume | Gill | 1971 |
| South Tipperary, 1570-1841 : religion, land and rivalry | Butler, David J., 1976- | Monograph or Collective Volume | Four Courts | 2006 |
| Special privileges for the Irish in the kingdom of Castile (1601-1680) : modern myth or contemporary reality? | O'Scea, Ciaran | Article in Book | | 2010 |
| Speech made by the Most Rev. Dr. O'Dwyer on the occasion of the conferring on him of the freedom of the city of Limerick, September 1916 | O'Dwyer, Edward | Article in Journal | | 1942 |
| Spirit of courage : life of Edmund Rice, founder of the Christian Brothers of Ireland | Humphreys, W. E. | Monograph or Collective Volume | C.T.S.I. | 1965 |
| Spiritual imperialism and the mission of the Irish race: the Catholic Church and emigration from nineteenth-century Ireland | Roddy, Sarah | Article in Journal | | 2013 |
| Sport, sectarianism and society in a divided Ireland | Bairner, AlanSugden, John Peter | Monograph or Collective Volume | Leicester University Press | 1993 |
| Sporting symbols, sporting identities : soccer and intergroup conflict in Scotland and Northern Ireland | Finn, Gerry B. | Article in Book | | 1994 |
| Sr Katherine Mulquin | Anonymous | Article in Journal | | 1988 |
| St Anthony's College of the Irish Franciscans, Louvain : 1927-1977, 1607-1977 | Conlan, Patrick, 1940- | Monograph or Collective Volume | | 1977 |
| St Anthony's College, Louvain | Mooney, Canice | Article in Journal | | 1969 |
| St Audeon's Roman Catholic Church, High Street, Dublin | Semple, Una | Article in Journal | | 2005 |
| St Bartholomew's : a history of the Dublin parish | Milne, Kenneth | Monograph or Collective Volume | Figgis | 1963 |
| St Brigid's Church : the first decade of an Irish parish in Memphis, 1870-1879 | Getz, John B. | Article in Journal | | 1991 |
| St Catherine Oughterlin 1792-1992 | McCreadie, John F. | Article in Journal | | 1992 |
| St Columban's Society : the modern disciples of the saint | O'Connor, Patrick | Article in Book | | 1951 |
| St Columcille's Catholic church | Byrne, MichaelWalsh, Gerald | Article in Book | | 1994 |
| St Finian's College 1802-1994 | Connell, Paul | Article in Journal | | 1994 |
| St Flannan's cathedral Killaloe : a short history | Owen, Edwin | Monograph or Collective Volume | Ballinakella | 1992 |
| St Isidore's: Rome and Donegal | Canning, B. J. (Bernard J.) | Article in Journal | | 2012 |
| St James's Church, Dublin. Centenary record | Anonymous | Monograph or Collective Volume | Metropolitan Publishing Co. | 1944 |
| St John the Evangelist Church, Moyraverty | McCorry, F.X. (Francis Xavier) | Article in Journal | | 2008 |
| St John's cathedral, Limerick | Fleming, John | Monograph or Collective Volume | Four Courts | 1987 |
| St John's Cathedral, Limerick | Devane, A. D. | Article in Book | | 1951 |
| St John's Church, Coolclogh, Co. Cork | O'Reilly, Barry | Article in Journal | | 2011 |
| St John's Lane : a 'poem in stone' from stones and stained glass | Kelly, David | Article in Book | | 2013 |
| St Joseph's Carmelite monastery, Kilmacud | Zherelin, Svyatoslav | Article in Journal | | 2013 |
| St Joseph's Church, Pontzpass : parish of Ballymore and Mullabrack, Armagh Archdiocese : its parish priests and curates, 1788-1996 | Anderson, Michael | Monograph or Collective Volume | The author | 1996 |
| St Joseph's Convent of Mercy, Kinsale : a celebration of 150 years, 1844-1994 | Hurley, Frank | Monograph or Collective Volume | Frank Hurley | 1994 |
| St Joseph's R.C. Church, Glasthule. 150 years old | O'Donnell, Mona | Article in Journal | | 2019 |
| St Kevin's way: A one-day camino to Glendalough | Doran, Kevin | Article in Book | | 2012 |
| St Kieran's College, Kilkenny | Birch, Peter | Monograph or Collective Volume | Gill | 1951 |
| St Kieran's College, Kilkenny : early history | Birch, Peter | Article in Journal | | 1959 |
| St Laurence's Parish Centre, Kilmacud | Chambers, Philip | Article in Journal | | 2019 |
| St Mary's Cathedral, Kilkenny : notes on the foundation, construction, furnishings | Phelan, Margaret M. | Monograph or Collective Volume | The author | 1972 |
| St Mary's Catholic Church | Rooney, John | Article in Journal | | 1998 |
| St Mary's Christian Brothers, Portlaoise, 1847-1947 | Anonymous | Monograph or Collective Volume | McEvoy Press | 1948 |
| St Mary's Church, Bennekerry, Carlow. Solemnly dedicated Sunday 9 November 1862 | Browne, John | Article in Journal | | 2019 |
| St Mary's Church, Buttevant, Co. Cork 1828-1886 : notes on its building history | O'Brien, James | Article in Book | | 2013 |
| St Mary's Church, Haddington Road and its environs | Doran, LindaDoran, WilliamSpencer, Kevin | Monograph or Collective Volume | St Mary's Church, Haddington Rd. | 1989 |
| St Mary's College, Crosby : commemoration record | Anonymous | Monograph or Collective Volume | Philip | 1944 |
| St Mary's National School, Sandyford | Van Turnhout, Michael | Article in Journal | | 2019 |
| St Mary's R.C. church, Stewartstown | Fée, David | Article in Journal | | 1994 |
| St Mary's Sandyford: a local hidden treasure | Dixon, Michael | Article in Journal | | 2011 |
| St Mel's cathedral, Longford, 1840. visitor's guide | Clarkson, Sr. AngelaDuffy, Francis, bishopHughes, KittyMcGuinness, SiveMurray, Tom, Rev.O'Reilly, Colm, bishopSalmon, GerryWhite, Alex | Monograph or Collective Volume | [St Mel's Cathedral] | 2016 |
| St Michael's Church Gorey, 1839-1989 | | Monograph or Collective Volume | [s.n.] | 1989 |
| St Michael's Church, Dun Laoghaire | Scudds, Anna | Article in Journal | | 2004 |
| St Michael's, Cootehill : a brief history of the church, its buildings, its people | O'Brien, Hugh B. | Monograph or Collective Volume | [s.n.] | 1993 |
| St Michan's church and parish : our church. A labour of love through the centuries | Pender, Paddy | Monograph or Collective Volume | | 2011 |
| St Patrick : the legend and the bishop | O'Loughlin, Thomas | Article in Journal | | 2006 |
| St Patrick's Catholic Church | Hanna, Conac | Article in Journal | | 1994 |
| St Patrick's Church extension | Hasson, Seamus | Article in Journal | | 1999 |
| St Patrick's church Portaferry | Crangle, Josie | Article in Journal | | 1977 |
| St Patrick's Church Rakauhauka, Southard, New Zealand : - the faith of the Galway/Irish settlers | Beerkens, Denise | Article in Journal | | 1998 |
| St Patrick's church, Donaghmore, Co. Tyrone : a history | Bogue, Patricia | Monograph or Collective Volume | Blackstaff Press | 2018 |
| St Patrick's Church, Dungiven, 1884-1984 : centenary memorial | | Article in Journal | | 1984 |
| St Patrick's Church, Knockcroghery | Coyne, Ferdy | Article in Journal | | 2000 |
| St Patrick's College and the earlier Kilmore Academy : a centenary history | Cunningham, Terence | Monograph or Collective Volume | St Patrick's College | 1974 |
| St Patrick's College, Maynooth, the Irish language revival effort and the Meath-men who made their mark | Ní Mhaonaigh, Tracey
| Article in Journal | | 2022 |
| St Patrick's Collegiate Chapel, Maynooth, Co. Kildare | McGuane, Eilíse | Article in Journal | | 2011 |
| St Patrick's Day in Australia | O'Farrell, Patrick James | Article in Journal | | 1995 |
| St Patrick's Dundalk : an anniversary account | Murtagh, Michael | Monograph or Collective Volume | Bellew Print (printer) | 1997 |
| St Patrick's Missionary Society (The Kiltegan Fathers) | O'Cuilinn, Peadar C. | Article in Journal | | 2009 |
| St Patrick's Purgatory | J. E. | Article in Journal | | 1984 |
| St Patrick's Purgatory in the seventeenth century: a place to fight | Dolan, Phelim | Article in Journal | | 2022 |
| St Patrick's Purgatory, Lough Derg, county Donegal | Flynn, L. J. | Monograph or Collective Volume | Eason | 1986 |
| St Peter Canisius and Ireland | Hennig, J. | Article in Journal | | 1946 |
| St Peter's Church, Carrigfadda | O'Callaghan, Con | Article in Journal | | 2005 |
| St Peter's Church, Drogheda : a quasi-history | Carr, Patrick | Monograph or Collective Volume | Old Drogheda Society | 2000 |
| St Saviour's Church, Dublin : centenary, 1861-1961 | Anonymous | Monograph or Collective Volume | Dominican Publications | 1963 |
| St Teresa's Church, Clarendon Street, Dublin | Monaghan, Phelim | Monograph or Collective Volume | Carmelite Publications | 1992 |
| St Vincent de Paul and Ireland 1640-1660 | Purcell, Mary | Article in Journal | | 1964 |
| St. Anthony's College of the Irish Franciscans at Louvain, 1607-1977 | Conlon, Patrick | Monograph or Collective Volume | Assisi Press | 1977 |
| St. Charles Borromeo parish South Philadelphia 1868-1993 | Burke, Bobbye J. | Article in Journal | | 1993 |
| St. Joseph's Church, Poyntzpass & its Parish Priests and Curates 1788 - 2002 | Anderson, Michael | Article in Journal | | 2009 |
| St. Macarten's contribution to the Maynooth mission to China | Smyth, Bernard T. | Article in Book | | 1940 |
| St. Macarten's seminary, centenary souvenir, 1940 | Anonymous | Monograph or Collective Volume | [s.n.] | 1940 |
| St. Mary' Church, Lancaster, PA. : 1785-1877 | Musser, Edgar A. | Article in Journal | | 1969 |
| St. Mary's Catholic Church and Ballyheigue Parish | MacMahon, Bryan | Article in Book | | 2012 |
| St. Patrick's Church in Rouen | McGinnity, Gerard | Article in Journal | | 1979 |
| St. Patrick's Church, Donabate : centenary celebration | Bates, Peadar | Monograph or Collective Volume | St. Patrick's Church Centenary Committee | 2003 |
| St. Patrick's day in Dundee, c.1850-1900 : a contested Irish institution in a Scottish context | McCready, Richard B. | Article in Book | | 2009 |
| Stair Chumann na Sagart | Ó Fiaich, Tomás | Article in Journal | | 1988 |
| State formation in seventeenth-century Ireland : the restoration financial settlement, 1660–62 | Johnston, Neil | Article in Journal | | 2016 |
| State intervention in disputes between secular and regular clergy in early seventeenth-century Ireland | Empey, Mark | Article in Journal | | 2018 |
| State of Raphoe diocese in early 1880s from the documents of 'De Propaganda Fide' | Anonymous | Article in Journal | | 1987 |
| State of the diocese of Kildare and Leighlin - 1800 A.D. | Crowe, Austin | Article in Journal | | 1977 |
| State policy in Irish education, A.D. 1536 to 1816, exemplified in documents collected for lectures to post-graduate classes. With an introduction | | Monograph or Collective Volume | | 1916 |
| Statement issued by the cardinal primate and the archbishops and bishops of Ireland on the condition of their country | Anonymous | Article in Journal | | 1942 |
| Statement of the Irish hierarchy on the condition of the country | Anonymous | Article in Journal | | 1942 |
| Staten Island Irish | Ridge, John T. | Article in Journal | | 1998 |
| Stations past | Somers, Nancy | Article in Journal | | 1996 |
| Statistical Appendices | Kinnear, Timothy | Article in Book | Oxford University Press | 2023 |
| Status symmetry effect : the association of exposure and PTS in Israel-Palestine and Northern Ireland | Hirsch-Hoefler, Sivan ; Vashdi, Dana R. ; Lowe, Robert D. ; Muldoon, Orla ; Hobfoll, Stevan E. ; Canetti, Daphna | Article in Journal | | 2021 |
| Steadfast saints or malleable models? seventeenth-century Irish hagiography revisited | Ryan, Salvador | Article in Journal | | 2005 |
| Steering clear : broadcasting and the Church, 1926-1951 | Lynch, Brian | Article in Journal | | 2000 |
| Steps on my pilgrim journey : memories and reflections | Daly, Cathal B. | Monograph or Collective Volume | Veritas | 1998 |
| Stories from a sacred landscape : Crogan Hill to Clonmacnoise | O'Brien, Caimin | Monograph or Collective Volume | Offaly County Council|Mercier Press | 2006 |
| Strained neutrality : Irish-American Catholics, Woodrow Wilson, and the Lusitania | Rowland, Thomas J. | Article in Journal | | 1995 |
| Strange sermons, 1840-41 : a turbulent priest in Barndarrig and Kilbride | Hannigan, Ken | Article in Journal | | 2015 |
| Strange voices in the 'Land of Song' : Belgian and German organist appointments to Catholic cathedrals and churches in Ireland, 1859-1916 | Collins, Paul | Article in Book | | 2007 |
| Structure and agency : comparative perspectives on the Catholic Irish experience in New Zealand and the U.S. | Fraser, Lyndon | Article in Journal | | 1995 |
| Students of All Hallows College, Dublin, from the diocese of Kilmore, 1842-1895 | Mitchell, Kilian J. | Article in Journal | | 1965 |
| Students of Kilmore Academy | Cunningham, Terence | Article in Journal | | 1985 |
| Students of the Irish College at Salamanca, 1592-1638 | Fenning, Hugh | Article in Journal | | 2009 |
| Students of the Irish College, Salamanca | O'Doherty, D. J. | Article in Journal | | 1914 |
| Studies in Irish Cistercian history | Donovan, FinbarrÓ Conbhuidhe, Colmcille | Monograph or Collective Volume | Four Courts | 1998 |
| Studies in Irish Cistercian history : 2, the Irish Cistercians under the Stuarts | Ó Conbhuidhe, C. | Article in Journal | | 1965 |
| Subverting the flapper : the unlikely alliance of Irish popular and ecclesiastical press in the 1920s | Valiulis, Maryann Gialanella, 1947- | Article in Book | | 2004 |
| Succession lists of parish priests in the archdiocese of Dublin, 1771-1963 | O'Riordan, W. M. | Article in Journal | | 1971 |
| Sufficiently radical catholicism, progressivism, and the bishop's program of 1919 | McShane, Joseph | Monograph or Collective Volume | Catholic University of America Press | 1986 |
| Supernational catholicity : Dublin and the 1932 Eucharistic Congress | Boyd, Gary A. | Article in Journal | | 2007 |
| Survey of recent publications : III, Ecclesiastical history | Ó Fiaich, Tomás | Article in Journal | | 1954 |
| Survival and reorganisation, 1650-95 | Millett, Benignus | Monograph or Collective Volume | Gill | 1968 |
| Surviving the Civil Constitution of the Clergy : Luke Joseph Hooke's revolutionary experiences | O'Connor, Thomas | Article in Journal | | 1996 |
| Sustaining a confessional state : the Irish parliament and Catholicism | Kelly, James, 1959- | Article in Book | | 2010 |
| Sweet good mothers and young women out in the world : the roles of Irish American women in late nineteenth and early twentieth century Worcester, Massachusetts | Meagher, Timothy J. | Article in Journal | | 1986 |
| Sweetman breweries in eighteenth-century Dublin | Magee, Sean | Article in Journal | | 2015 |
| Swift and Catholic Ireland | Mahony, Robert | Article in Book | | 1995 |
| Sylvester Lloyd, O.F.M., bishop of Killaloe, 1728-1739 | Murphy, Ignatius | Article in Journal | | 1987 |
| Sylvester O'Halloran, 1728-1807 | Lyons, J. B. (John Benignus) | Article in Journal | | 1989 |
| Symbol of predjudice - football and the Catholic community in Scotland | Bradley, Joseph M. | Article in Journal | | 1996 |
| Synod of Bishops 1990 : formation of priests | Lovatt-Dolan, Elizabeth | Article in Journal | | 1990 |
| Tabula memorum | Connolly, Al | Article in Journal | | 1993 |
| Tabula memorum | Connolly, Al | Article in Journal | | 1994 |
| Tabula memorum (conclusion) | Connolly, Al | Article in Journal | | 1996 |
| Tabular memorum (conclusion) | Connolly, Al | Article in Journal | | 1996 |
| Tadhg Mac Eochaidh, easbog Chluain Fearta, 1678-1687 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1944 |
| Tadhg Ó Cianáin : an Irish scholar in Rome | NA | Monograph or Collective Volume | Mater Dei Institute of Education | 2011 |
| Tadhg Ó Conaill | O'Dwyer, Peter | Article in Journal | | 1946 |
| Taig talk | Mac Poilin, Aodán | Article in Book | | 2000 |
| Taking a stand : memoir of an Irish priest | McVeigh, Joe | Monograph or Collective Volume | Mercier Press | 2008 |
| Taking care of their own : Irish Catholics, health care and Saint Vincents Hospital | McCauley, Bernadette | Article in Journal | | 1993 |
| Taking sides : conformity in early modern Kilkenny | Brennan, Monica | Article in Book | | 2003 |
| Taking sides : the emergence of Irish Catholic ideology | Lennon, Colm | Article in Book | | 2003 |
| Tartaraghan precinct, north Armagh : an account of the district south of Lough Nenagh between the Rivers Bann and Blackwater | Fleming, W. E. C. | Monograph or Collective Volume | The author | 2006 |
| Teachers of Cashel and Emly, A.D. 1750-1760 | Dwan, Thomas | Article in Journal | | 1939 |
| Teachtaireacht an Athar Eoghan | Ó Doibhlin, Breandán | Article in Journal | | 1964 |
| Teagasc Críostaí Uí Eoghasa | Mag Raghnaill, Fearghal | Article in Journal | | 1961 |
| Teller of tales: an insight into the life and times of Brother Paul Carney (1844-1928), travelling 'quester' and chronicler of the life of James Lynchehaun, nineteenth-century Achill criminal | Byrne, Patricia | Article in Journal | | 2009 |
| Temperance in Tipperary : Father Mathew and Archbishop Slattery, 1839-1854 | Quinn, John F. | Article in Journal | | 1995 |
| Temple Hugh O'Connell alias Teampall Dubh revisited | MacMahon, Michael | Article in Journal | | 2003 |
| Ten documents relating to Irish diocesan affairs, 1740-84, from Franciscan Library, Killiney | Giblin, Cathaldus | Article in Journal | | 1978 |
| Ten more priests | Nash, Robert | Monograph or Collective Volume | Clonmore & Reynolds | 1965 |
| Terence Albert O'Brien's speech from the scaffold | Walsh, Edward F. | Article in Journal | | 1997 |
| Text and translation of James Gallagher's 'A sermon on the Assumption of Our Blessed Lady' (1736) | Mac Murchaidh, Ciarán | Article in Journal | | 2009 |
| That dangerous serpent: Garibaldi and Ireland, 1860-1870 | O'Connor, Anne | Article in Journal | | 2002 |
| That Old Time Religion | Logue, Rose Mary | Article in Journal | | 2010 |
| The "Antrim Plot" of 1641 - a myth? | Ohlmeyer, Jane H. | Article in Journal | | 1992 |
| The "Antrim plot" of 1641 - a myth? : a response | Perceval-Maxwell, Michael | Article in Journal | | 1994 |
| The "Antrim plot" of 1641 : a rejoinder | Ohlmeyer, Jane H. | Article in Journal | | 1994 |
| The "Battle of the Borough" and the "Saige O Timaru" : sectarian riot in colonial Canterbury | Brosnahan, Seán G. | Article in Journal | | 1994 |
| The "brick palace" at Drumcondra : Archbishop Walsh and the building of Archbishop's House | Sheehy, David C. | Article in Book | | 2000 |
| The "Christian Society" of Garret Fitzgerald and Pierre Elliott Trudeau | Dunlop, Joseph | Article in Journal | | 2009 |
| The "Hay plan" : an account of Anglo-French recruitment efforts in Ireland, August 1918 | De Wiel, Jérôme aan | Article in Journal | | 2000 |
| The "Highgate Affair" : episode in establishing the authority of the Roman Catholic diocese of Burlington | Murphy, Ronald ChasePotash, P. Jeffrey | Article in Journal | | 1984 |
| The "Udienze" series in the Roman archives of Propaganda Fide, 1750-1820 | Fenning, Hugh | Article in Journal | | 1994 |
| The "Urbs" and "Hibernia": Missionary connections
between the Irish community of Rome and Ireland in the Seventeenth Century | Sanfilippo, Matteo | Article in Book | | 2019 |
| The 'absenting of the bishop of Armagh' : eucharistic controversy and the English origins of Irish Catholic identity, 1550-51 | Murray, James | Article in Book | | 2013 |
| The 'Aggiornamento' of the Irish Catholic Church in the 1960s and 1970s | Bevant, Yann | Article in Journal | | 2014 |
| The 'Austral Light' group | Morgan, Patrick | Article in Journal | | 2001 |
| The 'greening' of Cardinal Manning | Casey, Fergal | Article in Book | | 2013 |
| The 'imperialistic bishop of Ross' and his political influence | O'Regan, Liam | Article in Journal | | 1997 |
| The 'local' Irish in the west of Scotland, 1851-1921 | Vaughan, Geraldine | Monograph or Collective Volume | Palgrave Macmillan | 2013 |
| The 'making of men' : the Idea and reality of Newman's university in Oxford and Dublin | Shrimpton, Paul | Monograph or Collective Volume | Gracewing | 2014 |
| The 'massacre' at Longford in 1641 | Mac Gleannáin, Liam | Article in Journal | | 1980 |
| The 'new' church at Shanballymore | Condon, Gerard | Article in Journal | | 2009 |
| The 'papal letters to the Irish' cited by Bede : how did he get them? | Herren, Michael | Article in Book | | 2015 |
| The 'Popish plot' in county Carlow | Duggan, Maura | Article in Journal | | 1977 |
| The 'prelections' of Nicholas Callan (1799-1864) | McLoughlin, Patrick J.I., Monsignor | Article in Journal | | 1964 |
| The 'Processus Datariae' for Denis O'Driscoll, 1640 | Giblin, Cathaldus | Article in Journal | | 1965 |
| The 'Processus Datariea' and the appointment of Irish bishops in the seventeenth century | Giblin, Cathaldus | Article in Book | | 1957 |
| The 'social volcano' : policing Victorian Belfast | Radford, Mark | Article in Book | | 2006 |
| The 'tithe war' in Co. Longford in the 1830s | O'Ferrall, Fergus | Article in Journal | | 2013 |
| The 1622 royal visitation of the Church of Ireland in Ulster | Scott, Brendan | Article in Book | NA | 2013 |
| The 1840s : decade of tribulation | Acheson, T. W. | Article in Book | | 1994 |
| The 1861 census from the Catholic parish of Paulstown-Goresbridge | | Article in Journal | | 2019 |
| The 1906 education bill : Catholic peers and Irish nationalists | Cashman, John | Article in Journal | | 1987 |
| The 1906 Education Bill : Catholic peers and Irish nationalists | Cashman, John | Article in Journal | | 1987 |
| The 1920's - Of the Experience 'from Below' | Higgins, Michael D. | Article in Book | | 2023 |
| The 1932 Congress and the Irish diaspora | O'Dwyer, Rory | Article in Book | | 2012 |
| The 1932 Patrician Pageant | Rankin, Fred | Article in Journal | | 2001 |
| The 1990 Synod of Bishops : priestly formation | Dalton, William | Article in Journal | | 1990 |
| The 20th century : an age of change and challenge | Forde, Walter | Article in Book | | 1999 |
| The 2nd Duke of Leinster and the establishment of St Patrick's College, Maynooth | Begadon, Cormac | Article in Book | | 2014 |
| The 31st International Eucharistic Congress, 1932 | O'Hara, Aidan | Article in Journal | | 2013 |
| The 50th International Eucharistic Congress, Dublin, 2012: communion with Christ and with one another | Fuller, Louise | Article in Book | NA | 2012 |
| The Abbé Edgeworth Bi-Centenary Commemoration | Morris, Martin | Article in Journal | | 2007 |
| The Abbé MacGeoghegan dies | Le Juen, Yves | Article in Journal | | 1998 |
| The abbey : Bantry's Fransican friary | Crowley, Seamus | Article in Journal | | 1991 |
| The Academy of Christian Art (1929-1946) : an aspect of Catholic cultural life in newly independent Ireland | Bhreathnach-Lynch, Síghle | Article in Journal | | 1996 |
| The Act Book of the Diocese of Armagh, 1518-1522 : PRONI, MS DIO/4/2/11 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2020 |
| The Act of Union, nationalism and religion : 1780-1850 | Girvin, Brian | Article in Book | | 1994 |
| The activities and personnel of the general committee of the Catholics of Ireland, 1767-84 | MacGeehin, Maureen | Thesis | | 1952 |
| The Adelaide Irish and the politics of St Patrick’s day 1900-1918 | Macintyre, Clement | Article in Book | | 1995 |
| The administration of the diocese of Dublin during the eighteenth century | Kennedy, Raymond Thomas | Thesis | | 1970 |
| The age of Pio Nono : the age of Paul Cullen | Duffy, Eamon, 1947- | Article in Book | | 2011 |
| The aims and achievements of Lord Grenville | Jupp, Peter, 1940-2006 | Article in Book | | 1976 |
| The American achievement : a report from Great Ireland | Greeley, Andrew M. | Article in Book | | 1980 |
| The American Catholic experience : a history from colonial times to the present | Dolan, Jay P., 1936- | Monograph or Collective Volume | Doubleday | 1885 |
| The American Catholic press and the Easter rebellion | Rowland, Thomas J. | Article in Journal | | 1995 |
| The American Catholic press and the Easter Rising | Rowland, Thomas J. | Article in Book | | 2016 |
| The analecta of David Rothe, Bishop of Ossory | Moran, Patrick Francis, cardinal, 1830-1911Roth, David, R. C. Bishop of Ossory | Monograph or Collective Volume | M.H. Gill & Son | 1884 |
| The Ancient Order of Hibernians in Donegal 1904-1927 | Beattie, Sean | Article in Journal | | 2018 |
| The Anglican world : problems of coexistence during the pontificates of Urban VIII and Innocent X (1623-1655) | Conway, Dominic | Article in Book | | 1972 |
| The annual collection for His Holiness Pope Leo XIII in the diocese of Dublin | Anonymous | Article in Journal | | 2000 |
| The apocalypse in Ireland : prophecy and politics in the 1820s | Power, Thomas P | Monograph or Collective Volume | Peter Lang | 2023 |
| The apostasy of Miler McGrath | Ó Mearáin, Lorcán | Article in Journal | | 1958 |
| The apparition at Knock : a critical analysis of facts and evidence | Walsh, Michael, [Rev.] | Monograph or Collective Volume | Veritas | 2008 |
| The apparition at Knock : a survey of facts and evidence | Walsh, Michael | Monograph or Collective Volume | The Leinster Leader Ltd. | 1955 |
| The appointment of Bishop Michael Flannery and proposed revival of Roscrea diocese, 1858 | Murphy, Ignatius | Article in Journal | | 1984 |
| The appointment of Bishop Tyrrell and its consequences | Ó Fiaich, Tomás | Article in Journal | | 1955 |
| The appointment of blessed Oliver Plunket to Armagh | Ó Fiaich, Tomás | Article in Journal | | 1958 |
| The appointment of Catholic bishops in 19th century Ireland | Whyte, J. H. | Article in Journal | | 1962 |
| The appointment of Catholic Bishops to Killaloe Diocese, 1819-50 | Murphy, Ignatius | Article in Journal | | 1983 |
| The appointments of Patrick Curtis and Thomas Kelly as archbishop and coadjutor archbishop of Armagh | Macaulay, Ambrose | Article in Journal | | 1982 |
| The archbishops of Tuam, 1700-2000 | Waldron, Kieran | Monograph or Collective Volume | Nordlaw Books | 2008 |
| The archbishops, bishops and priests who served in the Archdiocese of Dublin : 1900 to 2011 | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 2012 |
| The Architecture and Art of British and Irish Catholicism | Proctor, Robert | Article in Book | Oxford University Press | 2023 |
| The archives at Simancas as a source for Irish ecclesiastical history | Mooney, Canice | Article in Journal | | 1955 |
| The archives of St. Isidore's College, Rome | Millett, Benignus | Article in Journal | | 1985 |
| The archives of the archdiocese of Dublin | Sheehy, David C. | Article in Journal | | 1989 |
| The archives of the Catholic diocese of Ferns | De Vál, Séamas S. | Article in Journal | | 2005 |
| The archives of the diocese of Cork & Ross, Ireland | Bolster, M. A. | Article in Journal | | 1988 |
| The archives of the Missionary Sisters of the Holy Rosary | Richardson, Cora | Article in Journal | | 1991 |
| The arrest of Father Hugh Curley, Adm, Clare Island, 1921 | Waldron, Kieran | Article in Journal | | 2010 |
| The arrest of Oliver Plunkett | Brady, John, d.1963 | Article in Journal | | 1954 |
| The arrival of the Daughters of Charity of St Vincent de Paul to Drogheda, Ireland, November 1855 | Casey, CarmelPrunty, JacintaSherlock, Olivia | Article in Book | | 2014 |
| The attempted anglicization of Ireland in the seventeenth century : an exemplar of "British history" | Canny, Nicholas P. | Article in Book | | 1993 |
| The attitude of contemporary Irish historical writers towards Rinuccini's excommunication of the supporters of the cessation with Inchiquin to the outbreak of the Remonsttrance controversy | Corish, P.J., Rev. | Thesis | | 1952 |
| The attitude of the Irish Catholic clergy towards emigration during the great famine | MacDonagh, Oliver | Article in Journal | | 1947 |
| The attitude of the Roman Catholic Church towards trade unionism in the North of England, 1833-42 | Treble, James H. | Article in Journal | | 1970 |
| The Augustinians and Dunmore | Birmingham, Hubert | Article in Journal | | 1994 |
| The Augustinians in Abbeyside, 1290-1990 | Fraher, William | Monograph or Collective Volume | Augustinian 700 Committee | 1990 |
| The Aussi cardinal from Leighlin : Patrick Francis Moran | Farry, Michael | Article in Journal | | 2000 |
| The ballot not the bullet: the Northern Ireland Social Democratic and Labour Party | McAllister, Ian | Thesis | | |
| The Ballynowlart martyrs | Milner, William Henry | Article in Journal | | 1965 |
| The Baltinglass rebellion and its Kilcock connections, 1579-1583 | Lynch, Kevin | Article in Journal | | 1995 |
| The Baltinglass rebellion, 1580 : English dissent or a Gaelic uprising? | Maginn, Christopher | Article in Journal | | 2004 |
| The Band of Hope | Finlay, John | Article in Journal | | 2022 |
| The banning and unbanning of Kate O'Brien's "The Land of Spices" | Fischerova, Jana | Article in Journal | | 2018 |
| The base of a probable candlestick from the Mass Rock at Carrickanaltar, Aghanaglack, County Fermanagh | MacDonald, Philip | Article in Journal | | 2008 |
| The battle for affection : the Catholic church and radical politics 1790-1800 | Keogh, Dáire | Article in Journal | | 1995 |
| The battle of Portarlington | Powell, J. S. (John Stocks) | Article in Journal | | 2004 |
| The beatified martyrs of Ireland (1) : Patrick O'Healy, O.F.M., Conn O'Rourke, O.F.M. | Millett, Benignus | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (10) : Terence Albert O'Brien, O.P., Bishop of Emly | Valkenburg, Augustine | Article in Journal | | 2001 |
| The beatified martyrs of Ireland (11) : John Kearney, O.F.M. (Priest) | Millett, Benignus | Article in Journal | | 2001 |
| The beatified martyrs of Ireland (2) : Matthew Lambert, Robert Meyler, Edward Cheevers, Patrick Cavanagh, and companions | Corish, Patrick J. | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (3) : Dermot O'Hurley, Archbishop of Cashel | Meagher, J. J. | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (4) : Margaret Ball (née Birmingham) | Brady, Ciarán | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (5) : Maurice MacKenraghty | Coombes, James | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (6) : Dominic Collins, S.J. | Finegan, Francis | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (7) : Conor O'Devany, O.F.M., Bishop of Down & Conor; Patrick O'Loughran, Priest | Devlin, Kieran | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (8) : Francis Taylor | Lennon, Colm | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (9) : Peter Higgins, O.P. | Valkenburg, Augustine | Article in Journal | | 2001 |
| The beatified martyrs of Ireland, 12 : Wiliam Tirry, O.S.A., priest | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 2001 |
| The beauties of Ireland : being original delineations, topographical, historical, and biographical of each county. 2 vols. | Brewer, James Norris | Monograph or Collective Volume | | 1823 |
| The beginning of the Irish effort to provide for the Roman Catholic foreign missions before the famine | Larkin, Emmet | Article in Book | | 2005 |
| The beginnings of Irish Catholic organisation in the eighteenth century | O'Conor, Charles | Article in Journal | | 1943 |
| The beginnings of the Catholic parishes of Dundalk, Haggardstown and Kilkerly in the county of Louth | O'Sullivan, Harold | Article in Journal | | 2003 |
| The beginnings of the devotional revolution in Ireland: the Parish Mission Movement, 1825-1846 | Larkin, Emmet
| Article in Journal | | 2014 |
| The beginnings of the Irish College, Rome | Corish, Patrick J. | Article in Book | | 2008 |
| The Bellews of Mount Bellew : a Catholic gentry family in eighteenth-century Ireland | Harvey, Karen J. | Monograph or Collective Volume | Four Courts | 1998 |
| The bi-centenary of Culloden, 1746-1946 | Hayes, Richard Francis | Article in Journal | | 1946 |
| The Bible war in Ireland : the "Second Reformation" and the polarization of Protestant-Catholic relations, 1800-1840 | Whelan, Irene | Monograph or Collective Volume | Lilliput | 2005 |
| The Birkenhead Garibaldi riots of 1862 | Neal, F. | Article in Journal | | 1982 |
| The birth of a mission | Dempsey, Mary | Article in Journal | | 2006 |
| The birthplace of Father Matt Keefe | Prendergast, Ella | Article in Journal | | 1987 |
| The bishop in politics : life and career of John MacEvilly, Bishop of Galway 1857-81, Archbishop of Tuam 1881-1902 | Bane, Liam | Monograph or Collective Volume | Westport Historical Society | 1993 |
| The bishop's palace | Lynch, Helen | Article in Book | | 1994 |
| The bishops and education | Wall, Patrick | Article in Journal | | 1982 |
| The bishops of Ossory from the Anglo-Norman invasion to the present day | Moran, Patrick Francis, cardinal, 1830–1911 | Article in Journal | | 1883 |
| The bishops' banishment act of 1697 (9 Will. III, c.1) | Simms, J. G. (John Gerald) | Article in Journal | | 1970 |
| The Blackwater Catholics and county Cork society and politics in the eighteenth century | Cullen, L. M. (Louis Michael) | Article in Book | | 1993 |
| The Blakes of Ballyglunin: Catholic merchants and landownders of Galway town and county in the seventeenth and eighteenth centuries | Walsh, Philip | Thesis | | 2017 |
| The books that define Ireland | Fanning, BryanGarvin, Tom | Monograph or Collective Volume | Merrion | 2014 |
| The Boston Pilot reports the Civil War | Walsh, Francis R. | Article in Journal | | 1981 |
| The boycott at Fethard-on-Sea, 1957 : a study in Catholic-Protestant relations in modern Ireland | Broderick, Eugene | Monograph or Collective Volume | Cambridge Scholars Publishing | 2011 |
| The boycott at Fethard-on-sea, county Wexford, 1957 | Broderick, Eugene | Article in Journal | | 2009 |
| The Break with Rome and the Early Reformation | Marshall, Peter | Article in Book | | 2023 |
| The Brigidine Sisters in Ireland, America, Australia and New Zealand, 1807-1922 | Power, Ann | Monograph or Collective Volume | Four Courts Press | 2018 |
| The British government and Archbishop Daniel Mannix | O'Brien, John | Article in Journal | | 1988 |
| The British Government and the appointment of Tomás Ó Fiaich as Archbishop of Armagh | Rafferty, Oliver P. | Article in Journal | | 2014 |
| The British state and the education of the Irish Catholics, 1850-1921 | Comerford, R.V. (Richard Vincent) | Article in Book | NA | 1991 |
| The Brow, the Brothers and the Bogside : a history of the Christian Brothers School, Derry, 1854-1990 | Ledwidge, John | Monograph or Collective Volume | Guildhall Press | 1990 |
| The building of Ballinabranna Chapel 1823-1830 | Kinsella, Shay | Article in Journal | | 2024 |
| The building of St Colman's Cathedral, Cobh | Wilson, Ann | Article in Journal | | 2004 |
| The Burnells and the penal laws | Blackall, Henry, Sir | Article in Journal | | 1969 |
| The burning of Freeduff Presbyterian Church, 1743 | Farrell, Sean | Article in Journal | | 2005 |
| The Cahil propositions, 1629 | O'Connell, W. D. | Article in Journal | | 1943 |
| The Cahir estate in the 19th and 20th centuries | McCarthy, Robert | Article in Journal | | 2011 |
| The Callahans and the Murphys (MGM, 1927) : a case study of Irish-American and catholic church censorship | Walsh, Francis R. | Article in Journal | | 1990 |
| The Callan image | McLaughlin, P. J. | Article in Journal | | 1964 |
| The campaign for Catholic emancipation in Kerry, 1810-1830 | Bric, Maurice J. | Article in Book | | 2020 |
| The campaign for Catholic emancipation, 1823-9 | Doherty, Gillian M.,O'Riordan, Tomás | Article in Book | | 2011 |
| The campaign of the Irish royalist army in Cheshire, November 1643-January 1644 | Lowe, John | Article in Journal | | 1960 |
| The capture of Conor O Devany, martyr | Devlin, Kieran | Article in Journal | | 1993 |
| The Capuchins in Ireland | Paschal, Father | Article in Journal | | 1964 |
| The cardinal Tomás Ó Fiaich memorial library and archive | Ó Doibhlin, Crónán | Article in Journal | | 2001 |
| The career and problem of David Wolfe, 1528-1579? Jesuit and Papal Commissary to Ireland | Morrissey, Thomas J. | Article in Journal | | 2007 |
| The career of the 2nd Earl of Limerick : an wxample of James's policy of religious toleration | Corp, Edward T. | Article in Book | | 2005 |
| The Carlow College priest : from Australasia to the Americas | McEvoy, John | Article in Book | | 2008 |
| The Carmelite nuns in Dublin, 1644-1829 | Kingston, John | Article in Journal | | 1964 |
| The Carmelites in Ardee | Mac Íomhair, Diarmuid | Article in Journal | | 1983 |
| The Carroll Family of Maryland | Hoffman, Ronald | Article in Journal | | 2007 |
| The case for Brother Walfrid | Burke, Mark | Article in Book | | 2004 |
| The case of Sacred Heart parish | Guignard, Michael | Article in Journal | | 1982 |
| The case of Thaddeus O'Malley. Labour, nationality and religion in nineteenth-century Ireland | D'Arcy, Fergus A., 1943- | Article in Journal | | 1994 |
| The case of the convert bishop : John Clement Gordon, 1644-1726 | Quinn, James | Article in Journal | | 1958 |
| The case of the Cushendall schoolmaster | Buckley, Anthony D. | Article in Journal | | 1992 |
| The cathedral church of St Fachta | Peters, Christopher | Article in Journal | | 1999 |
| The cathedral church of St. Colman's, Cloyne : historical and descriptive | Berry, Hugh F. | Monograph or Collective Volume | Guy & Co. | 1937 |
| The Cathedral of SS Patrick and Felim, Cavan, 1919-47 | Duffy, Francis | Article in Journal | | 1992 |
| The Cathedral of the Assumption : an outline of its history | O'Toole, James | Article in Book | | 1989 |
| The Catholic and urban profile of Irish America | McCaffrey, Lawrence J., 1925- | Article in Journal | | 1993 |
| The Catholic bishops and revolutionary violence in Ireland. Some 19th and 20th century comparisons | Rafferty, Oliver P. | Article in Journal | | 1994 |
| The Catholic Bulletin and republican Ireland, with special reference to J. J. O'Kelly ('sceilg') | Murphy, Brian P. | Monograph or Collective Volume | Athol | 2005 |
| The Catholic Bulletin, 1911-39 : battle of civilizations or long revolution | Maume, Patrick | Article in Book | NA | 2021 |
| The Catholic chapel and the Catholic community : observance and tradition in nineteenth-cnetury County Down | Rafferty, Oliver P. | Article in Book | | 1997 |
| The Catholic chaplaincy | Leonard, Jane | Article in Book | | 1986 |
| The Catholic church | Kennedy, David | Article in Book | | 1957 |
| The Catholic church after the Famine : consolidation and change | Moran, Gerard | Article in Book | | 2002 |
| The Catholic Church and Catholic schools in Northern Ireland : the price of faith | McGrath, Michael | Monograph or Collective Volume | Irish Academic Press | 2000 |
| The Catholic Church and Catholics in an era of sanctions and restraints, 1690–1790 | O'Connor, Thomas | Article in Book | | 2018 |
| The Catholic church and community : an Australian history | O'Farrell, Patrick James | Monograph or Collective Volume | [s.n.] | 1992 |
| The Catholic Church and investor capitalism in late-nineteenth century Ireland | Roddy, Sarah ; Doyle, Patrick | Article in Journal | | 2023 |
| The catholic church and Ireland in the age of revolution and rebellion, 1782-1803 | O'Donoghus, Patrick, Rev. | Thesis | | 1975 |
| The Catholic church and Irish nationalism in Toronto, 1850-1900 | Stortz, Gerald J. | Article in Book | | 1988 |
| The Catholic church and Irish politics in the eighteen sixties | Norman, Edward Robert | Monograph or Collective Volume | Dundealgan Press | 1965 |
| The Catholic Church and partition 1918-22 | Rafferty, Oliver P. | Article in Journal | | 1997 |
| The Catholic church and politics in Ireland | Keogh, Dermot | Article in Book | | 1993 |
| The Catholic church and radicalism in Ireland in 1790s | Keogh, Daire | Thesis | | 1992 |
| The Catholic church and relief of the poor, 1815-45 | O'Neill, Timothy P. | Article in Journal | | 1973 |
| The Catholic Church and religious culture in nineteenth-century Mayo | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2014 |
| The Catholic church and revolution | Gilley, Sheridan | Article in Book | | 1988 |
| The Catholic church and revolution in nineteenth-century Ireland | Gilley, Sheridan | Article in Book | | 1984 |
| The Catholic Church and the 'Godless colleges', 1845--1995 | Keogh, Dermot | Article in Book | | 1997 |
| The Catholic Church and the campaign for Emancipation in Ireland and England | Macauley, Ambrose | Monograph or Collective Volume | Four Courts Press | 2018 |
| The Catholic church and the famine | Kerr, Donal A. | Monograph or Collective Volume | Columba | 1996 |
| The Catholic Church and the foundation of the Northern Ireland state, 1912-1930 | Harris, Mary N. | Monograph or Collective Volume | Cork University Press | 1993 |
| The Catholic church and the Irish Free State 1923-1932 | Keogh, Dermot | Article in Journal | | 1994 |
| The Catholic Church and the Irish State, 1916-1973 | Ó Corráin, Daithí | Article in Book | Oxford University Press | 2024 |
| The Catholic Church and the Irish temperance movement, 1838-1901 | Malcolm, Elizabeth | Article in Journal | | 1982 |
| The Catholic church and the Knights of Labor | Browne, Henry J.Monaghan, John P. | Monograph or Collective Volume | Catholic University of America Press | 1949 |
| The Catholic church and the labour movement: Dublin and Clydeside, 1906-1932 | Quigley, Dermot | Thesis | | 1991 |
| The Catholic Church and the Nationalist community in Northern Ireland since 1960 | Rafferty, Oliver P. | Article in Journal | | 2008 |
| The Catholic Church and the Northern Ireland crisis, 1968-1986 | McElroy, Gerald | Monograph or Collective Volume | | 1991 |
| The Catholic church and the promotion of a Gaelic identity in Irish secondary schools, 1893-1962 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 2002 |
| The Catholic Church and the Protestant state : nineteenth-century Irish realities | Rafferty, Oliver P. | Monograph or Collective Volume | Four Courts | 2008 |
| The Catholic Church and the secondary school curriculum in Ireland, 1922-1962 | O'Donoghue, Thomas A., 1953- | Monograph or Collective Volume | Peter Lang | 1999 |
| The Catholic Church and the War of Independence | Heffernan, Brian | Article in Book | | 2017 |
| The Catholic church from Parnell to Partition | Harris, Mary N. | Article in Book | | 2002 |
| The Catholic Church in contemporary Ireland | Kenney, James F. | Article in Journal | | 1932 |
| The Catholic church in county Kilkenny 1600-1800 | Ó Ferghail, Fearghus | Article in Book | | 1990 |
| The Catholic church in county Tipperary, 1700-1900 | Whelan, Kevin | Article in Book | | 1985 |
| The Catholic Church in England in the nineteenth century : the Irish dimension | Rafferty, Oliver P. | Article in Book | Institute for Theological Partnerships Publishing | 2015 |
| The Catholic Church in Ireland and Northern Ireland : nationalism, identity, and opposition | Crotty, William | Article in Book | | 2006 |
| The Catholic church in Ireland in the age of the North Atlantic revolution, 1775-1815 | Keogh, Dáire | Article in Book | | 2002 |
| The Catholic Church in Ireland Since the 1950s | Keogh, Dermot | Article in Book | | 2007 |
| The Catholic church in Ireland, 1914-1918 : war and politics | De Wiel, Jérome aan | Monograph or Collective Volume | Irish Academic Press | 2003 |
| The Catholic Church in nineteenth-century Ireland | Newsinger, John | Article in Journal | | 1995 |
| The Catholic Church in nineteenth-century Ireland : a sociological study | Keenan, D. J. | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| The Catholic Church in nineteenth-century Ireland : a sociological study | Keenan, D. J. | Thesis | | |
| The Catholic church in Strabane since c.1600 | Dooher, John | Article in Book | | 2000 |
| The Catholic church in the age of O'Connell | Kerr, Donal A. | Article in Book | | 2002 |
| The Catholic Church in the Diocese of Ardagh : 1650-1870 | Kelly, James, 1959- | Article in Book | | 1991 |
| The Catholic church in the present world | Ehler, Sidney Z. | Article in Journal | | 1962 |
| The Catholic Church in Ulster under the plantation, 1609-42 | Mac Cuarta, Brian | Article in Book | | 2012 |
| The Catholic church in Wexford town, 1800-58 | Glynn, Jarlath | Article in Journal | | 1984 |
| The Catholic church since the Reformation | Kelleher, Thomas | Article in Book | | 1994 |
| The Catholic Church's Irishmen in Rome: the correspondence of Paul Cullen and Tobias Kirby | Orschel, Vera | Article in Journal | | 2008 |
| The Catholic church, and the writing of the 1937 constitution | Keogh, DermotMcCarthy, Andrew | Article in Journal | | 2005 |
| The Catholic church, clergy and religion in the novels of Canon Sheehan | Fleischmann, Ruth | Article in Journal | | 2002 |
| The Catholic Church, Ireland and the British Empire, 1800-1921 | Rafferty, Oliver P. | Article in Journal | | 2011 |
| The Catholic Church, minority rights, and the founding of the Northern Irish state | Harris, Mary N. | Article in Book | | 1993 |
| The Catholic Church, the Holy See and the 1916 Rising | Keogh, Dermot | Article in Book | | 2007 |
| The Catholic Church, the Irish mission and the Irish language in the eighteenth century | Mac Murchaidh, Ciarán | Article in Book | | 2012 |
| The Catholic clergy and Irish politics in the 1830s and 1840s | Nowlan, Kevin B. | Article in Book | NA | 1974 |
| The catholic clergy and popular politics in the dioceses of Cashel and Emly, 1823-48 | McGrath, Thomas G. | Thesis | | 1980 |
| The Catholic clergy and the great famine | O'Neill, Thomas Patrick | Article in Journal | | 1956 |
| The Catholic clergy and the independence movement | Ó Fiaich, Tomás | Article in Journal | | 1970 |
| The Catholic clergy and the social question in Ireland, 1891-1916 | MacMahon, Joseph A. | Article in Journal | | 1981 |
| The catholic clergy in Ireland, 1820-45 | Cahill, Brid | Thesis | | 1975 |
| The Catholic community in eighteenth century county Wexford | Whelan, Kevin | Article in Book | | 1999 |
| The Catholic community in eighteenth-century county Wexford | Whelan, Kevin | Article in Book | | 1990 |
| The Catholic community in Hamilton c.1800-1914 | Mitchell, Martin J. | Article in Book | | 1995 |
| The catholic community in the nineteenth century | Corish, Patrick J. | Article in Journal | | 1983 |
| The catholic community in the seventeenth and eighteenth centuries | Corish, Patrick J. | Monograph or Collective Volume | Helicon | 1981 |
| The Catholic Community in the Seventeenth and Eighteenth Centuries | Corish, Patrick J. | Monograph or Collective Volume | Ulster Historical Foundation | 2021 |
| The Catholic community of Belfast, 1850-1940 | Hepburn, Anthony C. | Article in Book | | 1992 |
| The Catholic Confederacy, 1642-9: an Irish state at war | Lenihan, Pádraig | Thesis | | 1995 |
| The Catholic Convention and Anglo-Irish politics, 1791-3 | O'Flaherty, E. | Article in Journal | | 1985 |
| The Catholic counterculture in America, 1933-1962 | Fisher, James | Monograph or Collective Volume | University of North Carolina | 1989 |
| The Catholic Directory for 1821 | Cunningham, P. | Article in Journal | | 1960 |
| The Catholic emancipation movement in the county of Donegal | MacDonagh, J. C. T. | Article in Journal | | 1957 |
| The Catholic hierarchy and education, 1898-1908 | Wall, Patrick | Article in Journal | | 1981 |
| The Catholic hierarchy and the Irish university question, 1880-1908 | Pašeta, Senia | Article in Journal | | 2000 |
| The Catholic immigrant woman in urban America | Nolan Janet A. | Article in Journal | | 1992 |
| The Catholic interest in Irish politics in the reign of Charles II | Creighton, Margaret Anne | Thesis | | 2000 |
| The Catholic Irish and wealth in Glasgow | Aspinwall, Bernard | Article in Book | | 1991 |
| The Catholic Irish in Scotland : in search of identity | Gallagher, Tom | Article in Book | | 1991 |
| The Catholic isles of Scotland : The Catholic church in the Hebrides, 1560-1760 | Campbell, John L. | Article in Journal | | 1964 |
| The Catholic Library comes of age : 1922-1943 | Brown, Stephen | Monograph or Collective Volume | Central Catholic Library | 1943 |
| The Catholic literary revival in American, 1920-1960 | Sparr, Arnold | Monograph or Collective Volume | University of Wisconsin Press | 1985 |
| The Catholic middle classes in pre-Famine Cork | O'Brien, John B. | Monograph or Collective Volume | National University of Ireland | 1980 |
| The Catholic minority after the Americanist controversy, 1899-1917 - a survey | McAvoy, T. T. | Article in Journal | | 1959 |
| The Catholic parish churches of Cork | Cahalane, P. | Article in Journal | | 1943 |
| The Catholic parish of Bovevagh, Diocese of Derry | Donnelly, Philip | Article in Journal | | 2002 |
| The Catholic parish, the Catholic chapel and village development in Ireland | Whelan, Kevin | Article in Journal | | 1983 |
| The Catholic parishes in the Barony of Cooley | O'Sullivan, Harold | Article in Journal | | 2015 |
| The Catholic predicament in ‘Northern Ireland’: volume two. Resurgence 1969-2016 | Walsh, Pat, 1961- | Monograph or Collective Volume | Belfast Historical & Educational Society | 2016 |
| The Catholic press and nativism, 1840-60 | Heuston, R. F. V. | Monograph or Collective Volume | [s.n.] | 1976 |
| The Catholic press and nativism, 1840-60 | Hueston, Robert Francis | Monograph or Collective Volume | Arno P. | 1976 |
| The Catholic press in Munster in the eighteenth century | Fenning, Hugh | Article in Book | | 1996 |
| The Catholic priesthood of South Australia, 1844-1915 | Schumann, Ruth | Article in Journal | | 1990 |
| The Catholic question and the monarchy, 1827–1829 | Machin, George Ian Thom | Article in Journal | | 1997 |
| The Catholic question in English politics, 1820 to 1830 | Machin, George Ian Thom | Monograph or Collective Volume | | 1964 |
| The Catholic question in English politics, 1820 to 1830 | Mackin, G. I. T. | Monograph or Collective Volume | Clarendon Press | 1964 |
| The Catholic question in Ireland and England, 1798-1822 | MacDermot, Brian | Monograph or Collective Volume | [s.n.] | 1988 |
| The Catholic question in Ireland and England, 1798-1822 : the papers of Denys Scully | McDermott, BrianScully, Denys | Monograph or Collective Volume | Irish Academic Press | 1988 |
| The catholic question in Ireland, 1774-1793 | O'Flaherty, Eamon | Thesis | | 1981 |
| The Catholic question in the eighteenth century | Bartlett, Thomas | Article in Journal | | 1993 |
| The Catholic question, 1801-1812 | Connolly, Sean J. | Article in Book | | 1989 |
| The Catholic Registers of Killea and Crooke, Co. Waterford | | Article in Journal | | 2013 |
| The Catholic rent of 1829 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1942 |
| The Catholic Studderts of Clonderlaw | Faulkner, Ivor J. | Article in Journal | | 2002 |
| The Catholic University of Ireland | Wall, Thomas | Article in Journal | | 1954 |
| The Catholic University of Ireland: financial contributions from the diocese of Waterford and Lismore | Hearne, John M. | Article in Journal | | 2016 |
| The Catholic University school of medicine | Doolin, William | Article in Book | | 1954 |
| The Catholic Workers' College Dublin : a personal history | McKenna, Liam, SJSeery, Aidan | Article in Journal | | 2014 |
| The Catholics and the Union | Geoghegan, Patrick M. | Article in Journal | | 2000 |
| The Catholics of Galway 1708-13: a commentary on a report by Don Giovanni Donato Mezzafalce | Mitchell,James | Article in Journal | | 2009 |
| The Catholics of the towns and the quarterage dispute in 18th century Ireland | MacGeehin, Maureen | Article in Journal | | 1952 |
| The Catholics of Ulster : a history | Elliott, Marianne | Monograph or Collective Volume | Allen Lane | 2000 |
| The Catholics, the Irish delinquent and the origins of reformatory schools in nineteenth century England and Scotland | Stack, John A. | Article in Journal | | 1997 |
| The Celtic cross : a collection of fifteen hundred years of devotion by Irish churchmen | Jackson, Robert Wyse | Monograph or Collective Volume | A.P.C.K. | 1954 |
| The centenary of St. Mel's cathedral 1840-1940 | Masterson, M. J. | Article in Journal | | 1940 |
| The centenary of the Pioneer Total Abstinence Association of the Sacred Heart | O'Hare, P. J. | Article in Journal | | 1999 |
| The challenge of Fr John Sullivan, S. J. | Savage, Roland | Article in Journal | | 1946 |
| The Challenge of the Irish Catholic Community in Nineteenth-Century Montreal | Olson, SherryThornton, Patricia | Article in Journal | | 2002 |
| The challenges facing the promoters of Catholic education in Dungannon during the 19th and early 20th centuries | McLoughlin, Michael | Article in Journal | | 2017 |
| The change of religion | MacCulloch, Diarmaid | Article in Book | | 2001 |
| The changing face of Catholic Ireland | Fennell, Desmond | Monograph or Collective Volume | Chapman | 1968 |
| The changing fortunes of the Butlers of Munphin, county Wexford | Butler, Barbara | Article in Journal | | 2014 |
| The chantries in the Irish Reformation; the case of St Anne's Guild, Dublin, 1550-1630 | Lennon, Colm | Article in Book | | 1990 |
| The chapel at Castletown. One of two chapels attached tp private residences in Ireland | Monahan, Amy | Article in Journal | | 2004 |
| The chapel school | Paterson, T. G. F. | Article in Book | | 2013 |
| The chaplain in the war trenches. In memoriam : Fr Willie Doyle, SJ, Dalkeyman, 1873-1917 | Quinn, T. | Article in Journal | | 1995 |
| The Chevers family of Monkstown and Killyan | Cannon, Séamus | Article in Journal | | 2018 |
| The children, the ITGWU, and the archbishop | Nevin, Donal | Article in Book | | 1998 |
| The Chinese batch : the Maynooth mission to China, origins, 1911-1920 | Smyth, Bernard T. | Monograph or Collective Volume | Four Courts | 1994 |
| The choosing of Oliver Kelly for the See of Tuam, 1809-15 | Coen, Martin | Article in Journal | | 1978 |
| The Christian Brothers and the second reformation in Ireland | Keogh, Dáire | Article in Journal | | 2005 |
| The Christian Brothers in Borris, 1865-78 | Brady, Breda | Article in Journal | | 1986 |
| The Christian Brothers in Nenagh | G., J. S. | Article in Journal | | 1939 |
| The Christian Brothers in New Ross, first century, 1849-1949 | Donovan, Patrick | Monograph or Collective Volume | The People Newspaper | 1952 |
| The Christian Brothers in Thurles | Ó Dúgáin, Seán | Article in Book | | 1989 |
| The church and change | Fisher, Desmond | Article in Book | | 1986 |
| The church and Fenianism | McCartney, Donal | Article in Journal | | 1967 |
| The Church and Fr John Murphy of Boolavogue 1753-1798 | Furlong, Nicholas | Article in Book | | 1997 |
| The church and Irish nationalism | Corish, Patrick J. | Article in Journal | | 1957 |
| The church and Northern Ireland | Hogan, Edmund | Article in Journal | | 1980 |
| The church and the artist : practice and patronage, 1922-45 | Bhreathnach-Lynch, Síghle | Article in Journal | | 1991 |
| The Church and the Easter Rising | Rafferty, Oliver P. | Article in Journal | | 2016 |
| The church and the pill : Irish and Australian debates of the 1960s | Noone, Val | Article in Book | | 1996 |
| The church in contemporary Ireland | Blanchard, Jean | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| The church in Dublin : 1940-1965 | Burke Savage, Roland | Article in Journal | | 1965 |
| The church in education - second thoughts | Comiskey, Brendan | Article in Book | | 1990 |
| The Church in England and Wales: An Historical Overview, | Bullivant, Stephen | Article in Book | Oxford University Press | 2023 |
| The church in Hawaii | Kelly, Charlotte | Article in Journal | | 1948 |
| The Church in nineteenth century Louth | Murtagh, Michael | Article in Journal | | 2020 |
| The church in the catacombs | Keogh, Dáire | Article in Book | | 2012 |
| The church militant : the Irish in Birkenhead | Boyle, C. J. | Article in Book | | 2000 |
| The church of Clonroche | McDonald, Tom | Article in Journal | | 2006 |
| The Church of Ireland : a history | Milne, Kenneth | Monograph or Collective Volume | A.P.C.K. | 1966 |
| The Church of Ireland in Eire since 1922 : a study of the assimilation of an ethno-religious group | Bowen, Kurt | Thesis | | |
| The Church of Ireland in the age of Catholic Emancipation | Brynn, Edward | Monograph or Collective Volume | Garland | 1982 |
| The Church of the Immaculate Conception, Barefield. The stained glass windows. The people of Barefield and friends abroad | Kearns, Mary | Article in Journal | | 2009 |
| The Church of the Sacred Heart, Donnybrook : 150th anniversary | Pegum, Colette | Monograph or Collective Volume | Donnybrook Parish | 2016 |
| The church on the hill : the story of a parish : St Thérese, Mount Merrion, Co. Dublin | | Monograph or Collective Volume | Parish of St Thérese | 2000 |
| The Church since emancipation : Church building | Kennedy, T. P. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Church since emancipation : Church reorganization | Cunningham, T. P. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Church since emancipation : Ecclesiastical learning | Corkery, John | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Church since emancipation : Epilogue : Modern Ireland | McKevitt, Peter | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The church under the penal code | Brady, John, d.1963Corish, Patrick J. | Article in Book | | 1968 |
| The church under the penal code | Brady, John, d.1963Corish, Patrick J. | Monograph or Collective Volume | Gill | 1971 |
| The church upon the hill : 1892-1992 | O'Loughlin, Joe | Monograph or Collective Volume | [s.n.] | 1992 |
| The church, education and control of the state in Ireland | Ryan, Patricia Twomey | Article in Journal | | 1987 |
| The Church, the State and the Fenian threat, 1861-75 | Rafferty, Oliver P. | Thesis | | |
| The church, the state and the women's movement in Northern Ireland | McWilliams, Monica | Article in Book | | 1993 |
| The churches and schools of Ashford and Glenealy Parish | | Article in Journal | | 2009 |
| The churches and society | Loughlin, James | Article in Journal | | 1989 |
| The churches of the archdiocese of Tuam | Waldron, Kieran | Article in Journal | | 1998 |
| The city and the church : catholic beginnings in Newark, 1840-1870 | Ralph, Raymond M. | Article in Journal | | 1978 |
| The civil rights crisis, 1962-9 | Corbett, Robin | Article in Book | | 1985 |
| The clergy and the Connacht rebellion | Mulloy, Sheila | Article in Book | | 1997 |
| The clergy in Carlow during the 1798 insurrection | McKenna, Dermot | Article in Journal | | 1998 |
| The Clergy of Down and Connor, 1400–1900 | | Monograph or Collective Volume | Ulster Historical Foundation|The Diocese of Down and Connor | 2020 |
| The clergy of Oliver Plunkett | Mac Phóil, Donnchadha | Article in Journal | | 1984 |
| The clergy of Oliver Plunkett [part 5] | Campbell, Patrick J.Mac Phóil, Donnchadha | Article in Journal | | 1986 |
| The clergy of the diocese of Derry : an index | Daly, EdwardDevlin, Kieran | Monograph or Collective Volume | Four Courts | 1997 |
| The clergy of the Diocese of Derry : an index | Daly, Edward
Devlin, Kieran | Monograph or Collective Volume | Four Courts | 2009 |
| The clergy of the parish of Dunleer | Faulkner, Pádraig | Article in Journal | | 1994 |
| The collected letters of Canon Sheehan of Doneraile 1883-1913 | | Monograph or Collective Volume | Smenos | 2013 |
| The college and the nation | Williams, Thomas | Article in Book | | 1954 |
| The college boys : students of Kilmore Academy and St Patrick's College, Cavan, 1839-2000 | Dunne, RaymondMac Kiernan, Francis J. | Monograph or Collective Volume | Cumann Seanchais Bhreifne | 2008 |
| The colourful Father Ned Lambe | Ní Chonaill, Áine | Article in Journal | | 2013 |
| The commercial aspect of the Irish penal code | Arkins, T. | Article in Journal | | 1912 |
| The communion of saints and Catholic reformation in early seventeenth-century Ireland | McCafferty, John | Article in Book | | 2006 |
| The communities of Ireland and the British state, 1660-1707 | Smyth, Jim | Article in Book | | 1996 |
| The completion of the Tudor conquest and the advance of the Counter-Reformation, 1571-1603 | Hayes-McCoy, G. A. (Gerard Anthony) | Article in Book | | 1976 |
| The Confederacy's fighting chaplain : Father John B. Bannon | Tucker, Phillip Thomas, 1953- | Monograph or Collective Volume | University of Alabama Press | 1992 |
| The Confederate Catholics of Ireland : the personnel of the Confederation, 1642-9 | Cregan, Donal F. | Article in Journal | | 1995 |
| The confederate Catholics of Ireland and popular politics | Darcy, Eamon | Article in Book | | 2019 |
| The Confederates and the Irish wars of the 1640's | Ó Siochrú, Micheál | Article in Book | | 2001 |
| The confederation of Kilkenny and Catholic Europe | Doyle, S. | Article in Journal | | 1957 |
| The confederation of Kilkenny reviewed | Beckett, J. C. (James Camlin) | Article in Book | | 1959 |
| The confessionalisation of Ireland? Assessment of a paradigm | Robinson-Hammerstein, Helga | Article in Journal | | 2001 |
| The Confraternity of Christian Doctrine in Ireland : AD 1775-1835. A chapter of organised Catholic action through popular education | Brenan, Martin | Monograph or Collective Volume | Browne & Nolan | 1934 |
| The Congregation of the Holy Ghost and the evolution of the modern Irish missionary movement | Hogan, Edmund M. | Article in Journal | | 1984 |
| The Connolly Association, the Catholic Church, and anti-communism in Britain and Ireland during the early Cold War | Madden, Gerard | Article in Journal | | 2018 |
| The Constitution of the Dominican Order : 1216-1360 | Galbraith, Georgina Rosalie | Monograph or Collective Volume | Manchester University Press | 1925 |
| The constitutional revolution, 1828-32 | Best, Geoffrey Francis Andrew | Article in Journal | | 1959 |
| The construction of argument : Henry Fitzsimon, John Rider and religious controversy in Dublin, 1599-1614 | Jackson, Brian | Article in Book | | 2005 |
| The construction of Insiders as Outsiders : Catholic accounts of Protestant converts in pre-Famine western Ireland | Hynes, Eugene | Article in Journal | | 2009 |
| The continuity of disaffection in eighteenth-century Ireland | Morley, Vincent | Article in Journal | | 2007 |
| The continuity of the Gaelic tradition in eighteenth-century Ireland | Bromwich, R. S. | Article in Journal | | 1947 |
| The contribution of Irish Franciscans on the Continent in the seventeenth century | Giblin, Cathaldus | Article in Book | | 1981 |
| The contribution of O'Connell | MacDonagh, Oliver | Article in Book | | 1973 |
| The contribution of the Presentation Brothers to Irish education 1960-1998 : a study of a Roman Catholic religious teaching institute in a time of change and transition | Kenneally, Michael Martin | Thesis | | |
| The convent national school in Mallow | Leahy, Melissa | Article in Journal | | 1990 |
| The conversion experience : the case of Fr James O'Farrell, OP, 1785-7 | Kelly, James, 1959- | Article in Book | | 2005 |
| The conversion of Connemara and conflict between Paul Cullen and John MacHale | Moffitt, Miriam | Article in Book | | 2011 |
| The conversion of the Barbarian peoples | Wood, Ian N. | Article in Book | | 1981 |
| The convict priests : Irish Catholicism in early colonial New South Wales | Whitaker, Anne-Maree | Article in Book | | 1996 |
| The Cootehill riot of 1833 | Curran, Daragh | Article in Journal | | 2014 |
| The Corballis/Corbally families of Co. Dublin | Parkinson, Danny | Article in Journal | | 1992 |
| The Corballis/Corbally families of Co. Dublin | Parkinson, Danny | Article in Journal | | 1992 |
| The correspondence of Abbot Smith, O.S.B. | Curran, M. J. | Article in Journal | | 1955 |
| The correspondence of Catherine McAuley, 1818-1841 | McAuley, Catherine | Monograph or Collective Volume | Four Courts | 2004 |
| The Correspondence of Edmund Burke, 1 : April 1774 to June 1768; 2 : July 1768 to June 1774; 3 : July 1774 to June 1778; 4 : July 1778 to June 1782; 5 : July 1782 to June 1789; 6 : July 1789 to Dec. 1791; 7 : Jan. 1792 to Aug. 1794; 8 : Sept. 1794 to Apr. 1796; 9 : May 1796 to July 1797; 10 : Index volume. 10 vols. | | Monograph or Collective Volume | | 1958 |
| The correspondence of William Good SJ and the Jesuit mission in Elizabethan Ireland,1564–c.1570 | DeWitt, Alexander G.McCoog, Thomas M. | Article in Book | | 2022 |
| The Council of Trent and Irish historiography | Lennon, Colm | Article in Book | Brepols | 2017 |
| The Counter-Reformation | Jones, F. M. | Monograph or Collective Volume | Gill | 1967 |
| The counter-reformation and the people of catholic Ireland, 1596-1641 | Bossy, John | Article in Book | | 1971 |
| The Crickstown Barnewalls: Judges of the Pale, 1435-1690 | Kenny, Colum
| Article in Journal | | 2019 |
| The Crimean journals of the Sisters of Mercy, 1854-56 | | Monograph or Collective Volume | Four Courts | 2004 |
| The Cromwellian persecution, and the Catholic Church in Ireland | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1937 |
| The Cromwellian settlement in Balyna parish, 1641-1688 | Hickey, N. M. | Article in Journal | | 1985 |
| The Cross of Saint Patrick : the Catholic Unionist tradition in Ireland | Biggs-Davison, JohnChowdharay-Best, George | Monograph or Collective Volume | The Kensal Press | 1984 |
| The Crown, Empire loyalism and the assimilation of non-British white subjects in the British world : an argument against "ethnic determinism" | Lowry, Donal | Article in Journal | | 2003 |
| The crozier and the Dáil : church and state in Ireland | Cooney, John | Monograph or Collective Volume | Mercier Press | 1986 |
| The crystal fountain : the story of an inner journey | Mackey, Noreen | Monograph or Collective Volume | Columba | 2007 |
| The Cullen era | Leslie, John Randolph (Shane), 1885–1971 | Article in Journal | | 1965 |
| The curious case of the Mayo librarian | Walsh, Pat | Monograph or Collective Volume | Mercier | 2009 |
| The current state of Catholic archives in Ireland : an overview | Sheehy, David C. | Article in Journal | | 1995 |
| The Dady Brothers, Irish music and the power of place in postwar America | Shannon, Christopher | Article in Journal | | 2018 |
| The dark cave and the divine light: verses on the human condition by Giolla Brighde Ó hEódhasa | Ó Corráin, Ailbhe | Monograph or Collective Volume | Novus Press | 2016 |
| The day St Michael's Church was destroyed by fire, Wednesday 28th July 1965 | Clarke, Carl | Article in Journal | | 2007 |
| The de Birminghams, barons of Athenry: a suggested outline lineage, from first to last | Mohr, Paul | Article in Journal | | 2011 |
| The dear old tongue in the heart of Babylon : the Catholic church and the Irish language in South London, 1750-1914. | Royds, John | Article in Journal | | 1992 |
| The death of an Archbishop of Armagh - Hugh McCawell OFM, Rome, 22 September 1626 | McEvoy, James | Article in Journal | | 2009 |
| The decade of the United Irishmen : contemporary accounts 1791-1801 | | Monograph or Collective Volume | Blackstaff Press | 1997 |
| The decoration of Cork cathedral | Pyle, Hilary | Article in Journal | | 1989 |
| The defeat of the church in penal Kinsale | McSwiney, P. | Article in Journal | | 1941 |
| The defence of Protestant Ireland, 1660-1760 | Connolly, Sean J. | Article in Book | | 1996 |
| The Defenders and Lawrence O'Connor | Kelly, Martin J. | Article in Journal | | 1972 |
| The defenders of Clonmel | O'Connell, Philip | Article in Book | | 1950 |
| The delayed development of parochial education among Irish Catholics in Worcester | Meagher, Timothy J. | Article in Journal | | 1984 |
| The demographic impact of Irish immigration on Birmingham Catholicism, 1800-1850 | Champ, J. F. | Article in Book | | 1989 |
| The development of the Catholic church in Derry under the leadership of Bishop Francis Kelly (1849-88) | McLaughlin, Stephen | Article in Book | | 2000 |
| The development of the Scottish catholic community, 1878-1978 | Ross, A. | Article in Journal | | 1978 |
| The devil is a jackass : being the dying works of the autobiographer, William Bernard Ullathorne 1806-1889 | | Monograph or Collective Volume | Gracewing | 1995 |
| The devil was the first protestant : gender and intolerance in Irish Catholic fiction | McDannell, Colleen | Article in Journal | | 1989 |
| The devotional landscape of medieval Irish cultural Catholicism inter hibernicos et inter anglicos, c.1200 - c.1550 | Ryan, Salvador | Article in Book | | 2013 |
| The devotional world of the Irish Catholic exile in early-modern Galicia, 1598-1666 | O'Scea, Ciaran | Article in Book | | 2001 |
| The devout priest & devoted patriot Fr Albert Bibby OFM Cap. 1877-1925 | Kavanagh, Myles | Article in Journal | | 2017 |
| The diary of a country curate : Reverend Henry Murphy in Ennis, 1844-1846 | Ó Murchadha, Ciarán | Article in Journal | | 1990 |
| The diary of Alicia Walshe (Mother Catherine), Religious Sister of Charity | McCabe, Ciarán | Article in Journal | | 2017 |
| The diary of John Mac Laverty, Maynooth student, 1896 - a commentary | O'Neill, Hugh | Article in Journal | | 2013 |
| The Digbys of Drumdaff | Ganly., Jim | Article in Journal | | 2019 |
| The diocesan clergy of Ferns : some reflections | Gahan, John | Article in Book | | 1999 |
| The diocesan school of Armagh & Connor : on the demolition of the building in Ballymena with an antecedent history in Carrickfergus | Dunlop, Eull | Article in Journal | | 1992 |
| The diocese of Clogher in 1714 | | Article in Journal | | 1955 |
| The diocese of Derry in the twentieth century | Bradley, ThomasMadden, Finbar J. | Article in Book | | 2000 |
| The diocese of Elphin 1747-1802 : documents from Roman archives | | Article in Journal | | 1994 |
| The diocese of Ferns and the penal days | Corish, Patrick J. | Article in Journal | | 1970 |
| The diocese of Killaloe in the eighteenth century | Murphy, Ignatius | Monograph or Collective Volume | | 1991 |
| The diocese of Killaloe in the past : items of interest about some parish priests | Clancy, John | Article in Journal | | 1941 |
| The diocese of Killaloe, 1800-1850 | Murphy, Ignatius | Monograph or Collective Volume | Four Courts | 1992 |
| The Diocese of Killaloe, 1800-1850 | Murphy, Ignatius | Monograph or Collective Volume | | 1992 |
| The Diocese of Kilmore 1800-1950 | Gallogly, Daniel | Monograph or Collective Volume | Cumann Seanchais Bhreifne | 1999 |
| The diocese of Kilmore, the Irish college in Paris and Alexander McCabe | Walsh, Micheline | Article in Journal | | 1979 |
| The diocese of Meath under Bishop John Cantwell, 1830-66 | Connell, Paul | Monograph or Collective Volume | Four Courts | 2004 |
| The diocese of Raphoe, 1773-1805 : documents illustrating the history of the diocese from the 'Congressi' volumes in the archives of the 'Propaganda Fide', Rome | | Monograph or Collective Volume | | 1980 |
| The dissolution of the monasteries and the parishes of the western liberty of Meath in the seventeenth century | Masterson, Rory | Article in Book | | 2016 |
| The distribution and segregation of Roman Catholics in Belfast | Jones, Emrys | Article in Journal | | 1956 |
| The domestic and international roles of Irish overseas colleges, 1590-1800 | O'Connor, Thomas | Article in Book | | 2017 |
| The Dominicans in Kerry, 1243-1987 | | Monograph or Collective Volume | Kerry County Library | 1987 |
| The Dominicans of Galway, 1488-1988 | Fenning, Hugh | Article in Book | | 1991 |
| The Doneraile mass-rock | Shine, Michael | Article in Journal | | 2000 |
| The Donnelly murders | Fazakas, Ray | Article in Journal | | 1994 |
| The dream lives forever : the story of St Patrick's Cathedral, New York | Burton, Katherine | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| The dream of Bishop Loras : a catholic Iowa | Auge, Thomas E. | Article in Journal | | 1980 |
| The Dreyfus affair in the Irish nationalist press, 1898-1899 | Barrett, Richard | Article in Journal | | 2007 |
| The Dublin / Murphy report : a watershed for Irish Catholicism | | Monograph or Collective Volume | Columba Press | 2010 |
| The Dublin Catholic Mob (1700-1750) | Fagan, Patrick, 1922-2011 | Article in Journal | | 1989 |
| The Dublin Diocesan Archives | Sheehy, David C. | Article in Journal | | 2005 |
| The Dublin Review, (1836-75), its reviewers and a "philosophy of knowledge" | Warren, John | Article in Journal | | 1992 |
| The Dublin University Mission Society, 1890-1905 | Walsh, Oonagh | Article in Journal | | 1995 |
| The Dublin years : 1886 | Thornton, R. K. R. | Article in Book | | 1988 |
| The duel between 'Danny' and Dizzy' | Rodden, John | Article in Journal | | 2022 |
| The duke of Ormond, the Popish Plot and the Exclusion Crisis, 1677-82 | Doyle, Thomas J. | Thesis | | 2004 |
| The duke of Wellington and the Catholic question | Noyce, Karen A. | Article in Book | NA | 1990 |
| The dust of Maynooth : Fenian funeral as political theater - St. Louis, 1865 | Morgan, Jack | Article in Journal | | 1998 |
| The dynamics of religious difference in contemporary Northern Ireland | Bell, John | Article in Book | | 2013 |
| The dynamics of the clerical-lay relationship in the Roscommon Gaelic League | McMahon, Timothy G.Paton, Monica | Article in Journal | | 2013 |
| The earl of Antrim and Irish aid to Montrose in 1644 | Lowe, John | Article in Journal | | 1960 |
| The earl of Tyrconnell and James II's Irish policy, 1685-1688 | Miller, John | Article in Journal | | 1977 |
| The earl-bishop of Derry and the Catholic question | Noakes, Robert | Article in Journal | | 1940 |
| The early failures of the Irish College Rome, 1628–78 | Binasco, Matteo | Article in Book | | 2018 |
| The early history of the Irish Sisters of Mercy in Connacht | Cryan, Rosarii | Thesis | | 1963 |
| The early Irish Catholic missionaries in Australia | Newman, Jeremiah | Article in Journal | | 1988 |
| The early Irish Catholic schools of Lowell, Massachusetts, 1835-1852 | Walsh, Louis S. | Monograph or Collective Volume | T. A. Whelan | 1901 |
| The early penal days : Clogher under the administration of Hugh MacMahon, (1701-1715) | Jefferies, Henry A. | Article in Book | | 2005 |
| The early response of the Irish Catholic clergy to the co-operative movement | Kennedy, Liam, 1946- | Article in Journal | | 1978 |
| The early response to the Irish Catholic clergy and the co-operative movement | Kennedy, Liam, 1946- | Article in Book | | 1987 |
| The Early Stuarts | Ó hAnnracháin, Tadhg | Article in Book | | 2023 |
| The early-modern Irish college network in Iberia, 1590-1800 | O Connell, Patricia | Article in Book | | 2001 |
| The ecclesiastical history of Laragh parish | Cunningham, Terence | Monograph or Collective Volume | The author | 1984 |
| The ecclesiastical structure, 1714-60 | McCracken, J. L. | Article in Book | | 1986 |
| The educational ideas of Paul Cardinal Cullen | Hayes, C. | Article in Journal | | 1980 |
| The educational views of John McHale. Part I | MacAtasney, Gerard | Article in Journal | | 1994 |
| The elusive quest : reconciliation in Northern Ireland | Porter, Norman | Monograph or Collective Volume | Blackstaff Press | 2003 |
| The embassy in Ireland of Monsignor G. B. Rinuccini, Archbishop of Fermo, in the years 1645-49 | Lenihan, Maurice | Article in Journal | | 1883 |
| The emergence of liberal Catholicism in America | Cross, R. D. | Monograph or Collective Volume | [s.n.] | 1958 |
| The emergence of maritime catholicism, 1781-1830 | Murphy, Terrence | Article in Journal | | 1984 |
| The emergence of the clergy in Borris | Joyce, Tom | Article in Journal | | 2016 |
| The emergence of the Irish Catholic nation, 1750-1850 | Bartlett, Thomas | Article in Book | | 2014 |
| The emergence of the Irish Episcopal Conference 1788-1882 | Murphy, Pádraig | Article in Journal | | 2009 |
| The emergence of the Irish Episcopal Conference 1788-1882 | Murphy, Pádraig | Article in Journal | | 2009 |
| The emerging identity of an Irish military group in the Spanish Netherlands : 1556-1610 | Henry, Gráinne | Article in Book | | 1990 |
| The Encyclopédie in eighteenth-century Ireland | Kennedy, Máire | Article in Journal | | 1996 |
| The End of Disadvantage? The descendants of Irish-Catholic immigrants in modern Scotland since 1945 | Devine, Thomas Martin | Article in Book | | 2008 |
| The end of Gaelic Ulster : a thematic interpretation of events between 1534 and 1610 | Morgan, Hiram | Article in Journal | | 1988 |
| The enduring testimony : St. Mary's Cemetery, Saint John | McDevitt, Mary | Article in Book | | 1988 |
| The English Benedictines in Eighteenth-Century Lorraine | Richard-Maupillier, Frédéric | Article in Book | | 2018 |
| The English catholic press and the home rule bill, 1885-86 | Greene, Thomas R. | Article in Journal | | 1975 |
| The English Catholics, 1850-1950 : essays to commemorate the centenary of the restoration of the hierarchy of England and Wales | NA | Monograph or Collective Volume | NA | 1950 |
| The epic of Catholic Boston | Harney, Martin P. | Article in Journal | | 1944 |
| The episcopal succession in Ireland during the first years of Elizabeth's reign | Murphy, N. | Article in Journal | | 1883 |
| The episcopal succession of Killaloe | Clancy, John | Article in Journal | | 1941 |
| The episcopal succession of Killaloe diocese | Gleeson, Dermot F. | Article in Journal | | 1942 |
| The episcopate of Dr Anthony O'Regan - "An t-Easpag briste" - the third bishop of Chicago | Kilgarriff, Kevin | Article in Journal | | 2005 |
| The Esmonde family of Co. Wexfrod and Catholic loyalty | Keogh, RichardMcConnel, James | Article in Book | | 2013 |
| The Eucharistic Congress of 1932 and Irish identity | Holmes, David G. | Article in Journal | | 2000 |
| The Eucharistic Congress, Dublin 1932 | O'Dwyer, Rory | Monograph or Collective Volume | Nonsuch | 2009 |
| The European culture wars in Ireland : the Callan schools affair, 1868-81 | Barr, Colin | Monograph or Collective Volume | University College Dublin | 2010 |
| The evolution of Catholic parishes in Dublin city from the sixteenth to the nineteenth centuries | Ó Fearghail, Conchubhair | Article in Book | | 1992 |
| The evolution of the Catholic parishes in County Wexford [part 1] | Culleton, Edward | Article in Journal | | 2007 |
| The exclusion of Catholics from the legal profession in Ireland, 1537-1829 | Kenny, Colum | Article in Journal | | 1987 |
| The expansion of Irish christianity to 1200; an historiographical study | Ó Briain, Felim | Article in Journal | | 1944 |
| The experience of Irish migrants to Glasgow, Scotland, 1863-1891 : a new way of being Irish | McBride, Terence | Monograph or Collective Volume | Edwin Mellen Press | 2006 |
| The failed attempts to implement a native rector at the Irish College in Rome, 1773–98 | | Article in Journal | | 2014 |
| The failure of Newman's Catholic University of Ireland | Barr, Colin | Article in Journal | | 2001 |
| The failure of the Irish revolution - and its success|Comments on the foregoing article | Fennell, Desmond | Article in Journal | | 1964 |
| The failure of the reformation in sixteenth-century Meath | Scott, Brendan | Article in Journal | | 2006 |
| The faithful Fathers McEnroe in and near Pennsylvania, 1880s-1950s | Buffington, Rosemary | Article in Journal | | 2021 |
| The fall and return of John Macmoyer | Ó Fiaich, Tomás | Article in Journal | | 1958 |
| The fall of the Catholic cosmopolitan : Charles O'Conor and the Catholic debate on the Act of Union | Livesey, James | Article in Journal | | 2013 |
| The famine and the Catholic church : a review article | McGrath, Thomas | Article in Journal | | 1997 |
| The famine and the Church in England | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| The famine and the development of the Church in Scotland | Handley, J. E. | Article in Journal | | 1947 |
| The fateful split : Catholics and the Royal Ulster Constabulary | Ryder, Chris | Monograph or Collective Volume | Methuen | 2004 |
| The Fennelly brothers and the Maynooth mission to India | Ní Chearbhaill, Máire | Article in Book | | 2015 |
| The fifth Earl Fitzwilliam and the School Wars | Gratton, D. J. | Article in Journal | | 2002 |
| The fighting Irish of Toronto : sport and Irish catholic identity at St. Michael's College, 1906-1916 | Ryan, Dennis P.Wamsley, K. B. | Article in Journal | | 2007 |
| The fighting Irish: historical archaeology of nineteenth-century Catholic immigrant experiences in South Bend, Indiana | Rotman, Deborah L. | Article in Journal | | 2010 |
| The Fingall family link with Douai Abbey Woolhampton, Berkshire, England and Killeen/Dunsany Parish, Co. Meath, Ireland | Carty, Mary Rose | Article in Journal | | 2018 |
| The first Catholic mission to Australia | Anonymous | Article in Journal | | 1996 |
| The first duke : an introduction to the Charles II-charter | Irwin, Liam | Article in Journal | | 1977 |
| The first Loreto sister : Mother Teresa Ball, 1794-1861 | Forristal, Desmond | Monograph or Collective Volume | Dominican | 1994 |
| The first man on the hill: The life and times of Rev. Patrick O'Connell (1850-1923) | O'Brien, Hugh B. | Article in Journal | | 2012 |
| The first national schools of the parish | MacMahon, Bryan | Article in Book | | 2012 |
| The first Rosminians in England and Ireland; Rosminian houses in England | Emery, C. J. | Article in Book | | 1960 |
| The Fitzwilliam episode | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Journal | | 1966 |
| The five martyrs of Drogheda | Rice, Gerard | Article in Journal | | 1997 |
| The flight of the earls, 1607 | McCavitt, John | Article in Journal | | 1994 |
| The flowering of the confraternities and sodalities in Ireland, c. 1860-c. 1960 | Kavanagh, RobinLennon, Colm | Article in Book | Columba | 2012 |
| The forgotten labour struggle : the 1911 Wexford lockout | Roche, Kieran S. | Article in Journal | | 2013 |
| The forgotten war : the Catholic church & Biafra (1967-1970) | Staunton, Enda | Article in Journal | | 2000 |
| The formation of the Catholic community in the west of Scotland | Aspinwall, Bernard | Article in Journal | | 1982 |
| The formation of the modern Catholic church in the diocese of Kilmore, 1580-1880 | Kelly, James, 1959- | Article in Book | | 1995 |
| The formation of the Old English élite in Ireland | Canny, Nicholas P. | Monograph or Collective Volume | National University of Ireland | 1975 |
| The formation of the parishes of Killala Diocese | Heffron, Liam Alex | Article in Journal | | 2018 |
| The formative development of the Dominican and Franciscan orders in Ireland, with special reference to the Observant reform | Flanagan, J.G., Rev. | Thesis | | 1947 |
| The Fottrell papers, 1721-39 : an edition of the papers found on the person of Fr. John Fottrell, Provincial of the Dominicans in Ireland at his arrest | Fenning, HughFottrell, John | Monograph or Collective Volume | Public Record Office of Northern Ireland | 1980 |
| The foundation of Carlow College | Duggan, Maura | Article in Journal | | 1972 |
| The foundation of Christianity in the parish of Kilkeevan (Castlerea) | Wall, Oliver | Article in Journal | | 1994 |
| The foundation of the Geraldine College of the Blessed Virgin Mary, Maynooth, 1518 | Lyons, Mary Ann | Article in Journal | | 1994 |
| The foundations of the Catholic Church in English-speaking New Brunswick | Toner, P. M. | Article in Book | | 1988 |
| The fourth centenary of the arrival of the first Jesuits in Ireland | Corboy, James | Article in Journal | | 1943 |
| The Franciscan Brothers in Westport | Thomas, Conal | Article in Journal | | 1999 |
| The Franciscan College Multyfarnham 1897-1997 : centenary lists | Fennessy, Ignatius | Article in Journal | | 1998 |
| The Franciscan friary at Kildare | Fennessy, Ignatius | Article in Journal | | 1996 |
| The Franciscan house in Thurles | Conlan, Patrick, 1940- | Article in Book | | 1989 |
| The Franciscan house in Thurles | Conlon, Patrick | Article in Journal | | 1977 |
| The Franciscan houses of Thomond in 1616 | Ryan, Martin | Article in Journal | | 1967 |
| The Franciscan Library Killiney: the journey of a valuable historical repository | Bhreathnach, Edel | Article in Journal | | 2007 |
| The Franciscan noviciate in Wexford, 1805-22 | Conlan, Patrick | Article in Journal | | 2010 |
| The Franciscan petition lists : diocese of Armagh 1670-71 | Campbell, Patrick J. | Article in Journal | | 1992 |
| The Franciscan Third Order Regular in Donegal | Conlan, Patrick, 1940- | Article in Journal | | 1997 |
| The Franciscans in Clonmel : 1269-1998 | Conlan, Patrick, 1940- | Article in Journal | | 1999 |
| The Franciscans in County Wexford | Conlan, Patrick, 1940- | Article in Journal | | 2006 |
| The Fransciscans in Antrim | Conlan, Pat | Article in Journal | | 2013 |
| The French connection with Maynooth College, 1795-1855 | Turner, Michael | Article in Journal | | 1981 |
| The French disease : the Catholic Church and Irish radicalism, 1790-1800 | Keogh, Dáire | Monograph or Collective Volume | Four Courts | 1993 |
| The French exiled clergy in the British Isles after 1789. An historical introduction and working list | Bellenger, Dominic Aidan | Monograph or Collective Volume | | 1986 |
| The French revolution and the Irish regiments in France | Scott, Sam | Article in Book | | 1990 |
| The Friars Minor and the Honan Hostel, University College, Cork | Egan, Bartholomew, OFM | Article in Journal | | 1980 |
| The future returns : a journey with Columba and Augustine of Canterbury | McMaster, Johnston | Monograph or Collective Volume | Corrymeela Press | 1997 |
| The Gaelic response to conquest | Ó Buachalla, Breandán | Article in Book | | 1998 |
| The Gangs of Manchester : The Story of the Scuttlers, Britain's First Youth Cult | Davies, Andrew, 1962 Feb. 8- | Monograph or Collective Volume | Milo Books | 2008 |
| The general : his life and times | Greensmyth, Harry | Monograph or Collective Volume | Harry Greensmyth | 2007 |
| The general election of 1892 : the Catholic clergy and the defeat of the Parnellites | Woods, C. J. (Christopher John) | Article in Book | | 1980 |
| The genesis of convent foundations and their institutions in Ulster, 1840-1920 | O'Connell, Marie | Article in Book | | 1994 |
| The genius of Fr Browne | | Monograph or Collective Volume | Wolfhound Press | 1990 |
| The gentlemen O'Reillys of the old family | Curran, Mary T.
| Article in Journal | | 2017 |
| The geography of poverty: Dublin, 1850-1900: the social mission of the [Catholic] church with particular reference to Margaret Aylward and co-workers | Prunty, Jacinta Lucy | Thesis | | 1993 |
| The geopolitics of the Irish-Catholic parish in nineteenth-century Montreal | Trigger, Rosalyn | Article in Journal | | 2001 |
| The Geraldine war - rebellion of crusade? | Mac Curtain, Benvenuta | Article in Journal | | 1965 |
| The Geraldine war : rebellion or crusade? | Mac Curtain, Benvenuta | Article in Journal | | 1964 |
| The golden age of the Irish Franciscans, 1615-50 | Mooney, Canice | Article in Book | | 1944 |
| The good old priests of the olden parish of Ida | O'Farrell, Ed | Article in Book | | 2001 |
| The Gosfords and the Mullaghbrack Catholics : an ecumenical relationship? | McGlennon, C. F. | Article in Journal | | 2003 |
| The Gothic revival in the Diocese of Armagh and the influence of John Murray, architect and surveyor | Geraghty, Peter J. | Article in Journal | | 2021 |
| The Graces, 1625-41 | Clarke, Aidan | Monograph or Collective Volume | | 1968 |
| The grammar school of Thomas Leverous and the town of Adare | Spillane, Milo | Article in Journal | | 2018 |
| The Great Famine and beyond : Irish migrants in Britain in the nineteenth and twentieth centuries | | Monograph or Collective Volume | Irish Academic Press | 2000 |
| The great famine and clergy in Galway city | O'Dowd, Peadar | Article in Journal | | 1995 |
| The great Father Tom Burke | Cassidy, James F. (James Francis), b. 1890 | Monograph or Collective Volume | Gill | 1947 |
| The great hunger and Irish Catholicism | Hynes, Eugene | Article in Journal | | 1978 |
| The Great War: Irish Australian perspectives | Cusack, Danny | Article in Journal | | 2016 |
| The Grenvilles' eminence grise : the Reverend Charles O'Conor and the latter days of Anglo-Gallicanism | Sack, James J. | Article in Journal | | 1979 |
| The growing demand for Catholic education in the eighteenth century, leading to the establishment of St. Patrick's, Maynooth in 1795 | O'Connor, R. | Article in Journal | | 1981 |
| The growth and origin of the diocese of Meath | Brady, John, d.1963 | Article in Journal | | 1949 |
| The growth of devotion to the Sacred Heart in Ireland | Burke-Savage, Roland | Article in Journal | | 1968 |
| The growth of sectarianism in Ireland in the later eighteenth century | O'Callaghan, Nora F. | Thesis | | 1975 |
| The Hallinan family of Quartertown | Forde, Robert | Article in Journal | | 1991 |
| The Hamilton High School premises : part 3 : seven county inspectors of constabulary | Hamilton, Pádraig | Article in Journal | | 1990 |
| The Hamilton High School premises, Bandon : part 2 : twin pillars of the establishment : Revd. William Sullivan B.A. (1775-1836) and Alexander Swanton J. P. (1809-1882) and the other residents of no. 2 Devonshire Square 1812-1848 | Hamilton, Pádraig | Article in Journal | | 1989 |
| The Hamilton High School premises, Bandon : part 4 | Hamilton, Pádraig | Article in Journal | | 1991 |
| The Hamilton High School premises, Bandon. Part 5 : “Governor” Thomas Biggs (c.1750-1824) woollen proprietor, miller and provost | Hamilton, Pádraig | Article in Journal | | 1995 |
| The Hamilton High School premises, Bandon. Part 1 : the residents of no. 1 Devonshire Square | Hamilton, Pádraig | Article in Journal | | 1988 |
| The Harold-Barrys of Doneraile, brothers, cousins, nephew and uncle, in arms | Linehan, Barry | Article in Journal | | 2016 |
| The hereditary bondsman : Daniel O'Connell 1775-1829 | MacDonagh, Oliver | Monograph or Collective Volume | Weidenfeld and Nicolson | 1988 |
| The hidden Gaeltacht in Old New York : nineteenth-century preaching in the Irish language | Ridge, John T. | Article in Journal | | 1991 |
| The hidden hand of God : the life of Veronica O'Brien and our common apostolate | Suenens, Léon Joseph | Monograph or Collective Volume | Vertias | 1994 |
| The historian and the archivist | McCartney, Donal | Article in Journal | | 1989 |
| The historic Irish, Scots and English Colleges of Louvain and the Irish presence in other colleges of the University | McEvoy, James | Article in Journal | | 2010 |
| The historical and social ground of religion and conflict in modern Ireland : a critical, holistic approach | Fulton, John | Thesis | | |
| The historical background | Darby, John | Article in Book | | 1983 |
| The historical dimension of Irish Catholicism | Larkin, Emmet | Monograph or Collective Volume | [s.n.] | 1984 |
| The historical links of Drum south Roscommon with the 31st International Eucharist Congress, Dublin 1932 | Drum Heritage Group | Monograph or Collective Volume | Drum Heritage Group | 2002 |
| The Historical Manuscripts Commission and the Franciscan manuscripts | Gillespie, Raymond, 1955-2024 | Article in Journal | | 2007 |
| The historical writings of Brendan Jennings, O.F.M. (1883-1970) | Lynch, Anthony | Article in Book | | 1995 |
| The historical writings of Felim Ó Briain, O.F.M. (1895-1957) | Lynch, Anthony | Article in Book | | 1995 |
| The historical writings of Patrick J. Corish to 1989 | | Article in Book | | 1990 |
| The historiography of the papers of Bishop James Doyle OSB, 1786-1834, in the Kildare and Leighlin diocesan archives | McGrath, T. G. | Article in Journal | | 1988 |
| The history and antiquities of the diocese of Ossory | Carrigan, William, 1860-1924 | Monograph or Collective Volume | [s.n.] | 1981 |
| The history and antiquities of the diocese of Ossory. 1:Introduction and Extent, Deaneries, Bishops, Chapter and Colleges of the diocese of Ossory; 2 : Northern Deanery of Ossory Diocese; 3 : The Middle Deanery, including the Cathedral City of the Diocese of Ossory; 4 : The Southern Deanery of the Diocese of Ossory. 4 vols. | Carrigan, William, 1860-1924 | Monograph or Collective Volume | | 1905 |
| The history of the construction of Tuam Cathedral | Higgins, Patrick | Article in Journal | | 2010 |
| The history of the Irish Presentation Sisters in the twentieth century : from autonomy to union | O'Reilly, Louise | Thesis | | 2009 |
| The history of the suppressed Irish College, Rome, part I: 1798-1808 | Korten, Christopher | Article in Journal | | 2014 |
| The Holy See and Ireland, 1780-1802 | O'Donoghue, P. | Article in Journal | | 1976 |
| The Holy See and the Irish movement for the repeal of the union with England, 1829-47 | Broderick, J. F. | Monograph or Collective Volume | Universitas Gregoriana | 1951 |
| The Holy See and the Irish National Schools | Barry, P. C. | Article in Journal | | 1959 |
| The holy wells of County Louth | Conlon, Larry | Article in Journal | | 1999 |
| The holy wells of County Wicklow : traditions and legends | Lynch, Geraldine | Article in Book | | 1994 |
| The Home Rule Bill, map showing distribution of the non-Catholic population | Anonymous | Article in Journal | | 1912 |
| The Honan chapel, University College, Cork | O'Kelly, M. J. (Michael Joseph) | Monograph or Collective Volume | Cork University Press | 1967 |
| The Honourable Robert Edward Clifford (fl. 1788-1817) : officer in Dillon's regiment | Ravenhill, William | Article in Journal | | 1991 |
| The house that Harry built : Irish Presentation Brothers in Trinidad | Feheny, John M. | Article in Book | | 2015 |
| The household of faith | Taves, Ann | Monograph or Collective Volume | # | 1988 |
| The I.H.S. monogram as a symbol of Catholic resistance in seventeenth-century Ireland | Donnelly, Colm J. | Article in Journal | | 2005 |
| The identity of Ulster : the land , the language and the people | Adamson, Ian | Monograph or Collective Volume | Baird | 1982 |
| The identity of Ulster : the land, the language and the people | Adamson, Ian | Monograph or Collective Volume | Pretani Press | 1991 |
| The image of a relationship in blood : Párliament na mBan and Burke's Jacobite politics | O'Donnell, Katherine, 1966- | Article in Journal | | 2000 |
| The image of O'Connell in Australia | O'Farrell, Patrick James | Article in Book | | 1980 |
| The image of O'Connell: a reappraisal | O'Mahony, Edmund Gerard | Thesis | | 1983 |
| The imagining of place : representation and identity in contemporary Ireland | Graham, B. J. (Brian J.) | Article in Book | | 1997 |
| The immigrant alternative : ethnic and sectarian mutuality among the Liverpool Irish during the nineteenth century | Belchem, John | Article in Book | | 1995 |
| The immigrant church : New York's Irish and German Catholics, 1815-1865 | Dolan, Jay P., 1936- | Monograph or Collective Volume | Johns Hopkins University Press | 1975 |
| The impact of British colonialism on Irish Catholiciam and national identity: Repression, reemergence, and divergence | White, Timothy J. | Article in Journal | | 2010 |
| The impact of Daniel O'Connell on the origin and development of the Catholic movement in Germany, 1830-50 | Grogan, Geraldine F. | Thesis | | 1989 |
| The impact of Irish Catholic priests in seventeenth-century Gaelic-speaking Scotland | McInally, Tom | Article in Book | | 2005 |
| The impact of the anniversary celebrations of 1929 and 1932 on the religious atmosphere in early-independent Ireland | Moffitt, Miriam | Article in Book | | 2016 |
| The impact of the battle of Aughrim (1691) on the Irish Catholic elite | Lenihan, Pádraig | Article in Book | | 2011 |
| The impact of the Irish on the missionary activities of Dominic Barberi, 1840-1849 | Hamer, Dominic Savio | Article in Journal | | 2001 |
| The impact of the Irish on the missionary activities of Dominic Barberi, 1840-1849 | Hamer, Dominic Savio | Article in Journal | | 2001 |
| The impact of the penal laws | Kelly, James, 1959- | Article in Book | | 2000 |
| The Imperial anxieties of a nineteenth-century bigamy case | Gill, Rebecca | Article in Journal | | 2004 |
| The Imperial Irish: Canada's Irish Catholics Fight the Great War, 1914-1918 | McGowan, Mark G. | Monograph or Collective Volume | McGill-Queen's University Press | 2017 |
| The implications of Thomas Wentworth's proposals for a plantation in Connacht and the provincial old English | Duignan, Aoife | Article in Journal | | 2001 |
| The impossible diplomatic mission of Giovanni Battista Rinuccini 1645-1649 | O'Sullivan, T. F. | Article in Journal | | 1993 |
| The income of Catholic priests in pre-Famine Ireland: some evidence from the Diocese of Killaloe | Grace, Daniel | Article in Journal | | 2017 |
| The influence of Catholic nationalism on the legislature of the Irish Free State | Nolan, Michael | Article in Journal | | 1975 |
| The influence of Ireland on the Newfoundland ballad | Kirwin, William | Article in Book | | 1977 |
| The influence of O'Connell on French liberal Catholicism | Rollet, Henri | Article in Book | | 1980 |
| The influence of the Irish Catholic clergy in shaping the religious and political allegiances of Irish Catholics, 1603-41 | Finnegan, David | Article in Book | | 2013 |
| The influence of the Irish on the Catholic church in America in the nineteenth century | Egan, Patrick K. | Monograph or Collective Volume | National University of Ireland | 1968 |
| The inspired life of Fr Patrick O'Grady | O'Grady, Ethna | Article in Journal | | 2016 |
| The Institute of Charity: Rosminians. Their Irish story, 1860-2003 | Bates, Bríd Fahey | Monograph or Collective Volume | Institute of Charity, Dublin | 2003 |
| The institutional churches and the process of reconciliation in Northern Ireland; recent progress in Presbyterian-Roman Catholic relations | Beeman, Josiah HortonMahony, Robert | Article in Book | | 1993 |
| The integral Irish tradition | Ó Floinn, D. | Monograph or Collective Volume | Gill | 1954 |
| The International Eucharistic Congress 1932 | Sobolewski, Peter | Article in Journal | | 2013 |
| The interrogation of Gerald Keating: trouble, tension and treason | Empey, Mark | Article in Journal | | 2024 |
| The inventory of the Franciscan Friary of Kinalehan (1698) | Smith, Keith | Article in Journal | | 2016 |
| The involvement of the Catholic Clergy with the Republican struggle in Carlow from 1913-21 | Joyce, Tom | Article in Journal | | 2016 |
| The Ireland of Edward Cahill (1868-1941): a liberal or a Christian state? | Morrissey, Thomas J. | Article in Journal | | 2017 |
| The Ireland of Edward Cahill, SJ, 1868-1941 : a secular or a Christian state? | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2016 |
| The Irish abroad : Michael Condon in Scotland, 1845-1878 | Aspinwall, Bernard | Article in Book | | 1989 |
| The Irish abroad, 1534-1691 | Silke, John J. | Article in Book | | 1976 |
| The Irish Act of Union, the Catholic question and the collapse of Pitt's ministry: a study in high politics, 1798-1801 | Geoghegan, Patrick Martin | Thesis | | 1997 |
| The Irish adjustment in Montreal | Keep, G. R. C. | Article in Journal | | 1950 |
| The Irish American response to Catholic Emancipation | Moriarty, T. F. | Article in Journal | | 1980 |
| The Irish and Catholic power : an American interpretation | Blanshard, PaulHyde, Harford Montgomery | Monograph or Collective Volume | Verschoyle | 1954 |
| The Irish and the Christian Churches in America | Doyle, David Noel | Article in Book | | 1980 |
| The Irish Augustinians in Australia, 1839-1992 : Australia remembers St. Patrick's College, Rome | Hunt, Thomas | Article in Book | | 1994 |
| The Irish Augustinians in Ecuador, 1977-1992 | O'Connor, Paul G. | Article in Book | | 1994 |
| The Irish Augustinians in England and Scotland, 1539-1992 : the Irish province-restorer of its Anglo-Scottish mother province | Hackett, Michael Benedict | Article in Book | | 1994 |
| The Irish Augustinians in India, 1834-1841 | Clancy, Peter | Article in Book | | 1994 |
| The Irish Augustinians in Kenya, 1991-1992 | Brosnan, Declan T. | Article in Book | | 1994 |
| The Irish Augustinians in Nigeria, 1939-1992 | Hickey, Raymond | Article in Book | | 1994 |
| The Irish Augustinians in North America, 1794-1992 : the Irish Augustinian mission to the United States of America | Schnaubelt, Joseph C. , 1931- | Article in Book | | 1994 |
| The Irish Augustinians in Rome, 1656-1994 and Irish Augustinian missions throughout the world | | Monograph or Collective Volume | Augustinian House of Studies|St Patrick's College | 1994 |
| The Irish barn church | Bradley, John, Rev. | Article in Journal | | 2008 |
| The Irish battalion in the papal army of 1860 | Berkeley, G. F. H. | Monograph or Collective Volume | Talbot Press | 1929 |
| The Irish Battalion of St. Patrick at the defence of Spoleto, September, 1860 | Crean, Cyril P. | Article in Journal | | 1959 |
| The Irish bishops and the conscription issue 1918 | Ó Fiaich, Tomás | Article in Journal | | 1968 |
| The Irish Bishops and the Conscription Issue, 1918 | Ó Fiaich, Tomás | Article in Journal | | 2019 |
| The Irish brigade in the Papal army 1860 | Corkery, Séamus | Article in Journal | | 1990 |
| The Irish Brigade with Montrose | Duggan, Lucy | Article in Journal | | 1958 |
| The Irish Carmelites come to the Bronx | Isacsson, Alfred | Article in Journal | | 1988 |
| The Irish Catholic Benevolent Union | Donohue, Joan Marie | Monograph or Collective Volume | Catholic University of America Press | 1953 |
| The Irish Catholic burial habit | Fenlon, Maria | Article in Book | | 2004 |
| The Irish Catholic Church and the Internet | Maignant, Catherine | Article in Journal | | 2017 |
| The Irish Catholic Church under Charles II : the ‘Popish Plot’ and the martyrdom of Oliver Plunkett | Considère-Charon, Marie-Claire | Article in Journal | | 2013 |
| The Irish Catholic clergy and emigration during the great famine | MacDonagh, Oliver | Article in Journal | | 1947 |
| The Irish Catholic Episcopal Corps, 1657-1829: a prosopographical analysis | Derr, Eric | Thesis | | 2014 |
| The Irish Catholic experience : a historical survey | Corish, Patrick J. | Monograph or Collective Volume | Gill & Macmillan | 1985 |
| The Irish Catholic female religious and the transnationalisation of care : an historical perspective | Yeates, Nicola | Article in Journal | | 2002 |
| The Irish Catholic interest at the London Inns of Court, 1674-1800 | Bergin, John | Article in Journal | | 2009 |
| The Irish Catholic petition of 1805, the diary of Denys Scully | MacDermot, BrianScully, Denys | Monograph or Collective Volume | Irish Academic Press | 1992 |
| The Irish Catholic Press in Toronto 1887-1892 : the years of transition | Stortz, Gerald J. | Article in Journal | | 1984 |
| The Irish Catholic press in Toronto, 1874-1887 | Stortz, Gerald J. | Article in Journal | | 1980 |
| The Irish Catholic schooling of James T. Farrell, 1914-23 | Ebest, Ron | Article in Journal | | 1996 |
| The Irish Catholic secular clergy, 1850-1900 | Bane, Liam | Thesis | | 1994 |
| The Irish Catholic, Halifax's first minority group | Punch, Terence M. | Article in Journal | | 1980 |
| The Irish catholics and the legislative union | Burke, T.A., Rev. | Thesis | | 1942-1943 |
| The Irish Christian Brothers in England, 1825-80 | Gillespie, W.J. | Thesis | | 1976 |
| The Irish church and taxation in the fourteenth century | Lydon, James F. | Article in Journal | | 1964 |
| The Irish church and the papacy | Corish, Patrick J. | Article in Journal | | 1979 |
| The Irish church in the sixteenth century | Mooney, Canice | Article in Journal | | 1963 |
| The Irish clergy and Archbishop Manning's apostolic visitation of the western district of Scotland, 1867 | McClelland, Vincent Alan | Article in Journal | | 1967 |
| The Irish clergy of the diocese of Bordeaux during the revolution | Loupès, Philippe | Article in Book | | 1990 |
| The Irish clergyman | McAvoy, T. T. | Article in Book | | 1970 |
| The Irish clergyman in the United States | McAvoy, Thomas T. | Article in Journal | | 1964 |
| The Irish College Antwerp | Nilis, Jeroen | Article in Journal | | 1996 |
| The Irish College at Alcalá de Henares 1649-1785 | O Connell, Patricia | Monograph or Collective Volume | Four Courts | 1997 |
| The Irish college at Salamanca | Henchy, Monica | Article in Book | | 2007 |
| The Irish college at Salamanca | Henchy, Monica | Article in Journal | | 1981 |
| The Irish college at Salamanca | Corboy, James | Article in Journal | | 1944 |
| The Irish College at Santiago de Compostela : two documents about its early days | Davies, Gareth | Article in Book | | 1987 |
| The Irish College at Santiago de Compostela, 1605-1769 | O Connell, Patricia | Monograph or Collective Volume | Four Courts | 2007 |
| The Irish college at Toulouse | Walsh, T. J. (Timothy J.) | Article in Journal | | 1954 |
| The Irish College of Alcala de Henares | Walsh, Micheline Kerney | Article in Journal | | 1985 |
| The Irish College of Bordeaux : some Cork association with the Gironde | Walsh, T. J. (Timothy J.) | Article in Journal | | 1947 |
| The Irish College of Madrid | Walsh, Micheline Kerney | Article in Journal | | 1993 |
| The Irish College Rome | Hanly, John J. | Monograph or Collective Volume | Eason | 1989 |
| The Irish College under the Jesuits (1635-1772) | Devitt, Patrick | Article in Journal | | 1968 |
| The Irish College, Rome and the appointment of Irish bishops to the United States 1830-1851 | Barr, Colin | Article in Book | | 2008 |
| The Irish College, Santiago de Compostela : 1605-1767 | O Connell, Patricia | Article in Journal | | 1996 |
| The Irish College, Seville | Silke, John J. | Article in Journal | | 1961 |
| The Irish colleges at Douai and Antwerp | | Article in Journal | | 1947 |
| The Irish colleges in Europe and the counter-reformation | Brady, John, d.1963 | Article in Journal | | 1957 |
| The Irish colleges in Spain | Henchy, Monica | Article in Journal | | 1999 |
| The Irish colleges in the Low Countries | | Article in Journal | | 1949 |
| The Irish colleges of Bordeaux and Lille | Walshe, T., Rev. | Thesis | | 1952 |
| The Irish colleges on the continent | Giblin, Cathaldus | Article in Book | | 1978 |
| The Irish colleges on the continent : Their origin and history | O'Boyle, James | Monograph or Collective Volume | | 1935 |
| The Irish community in eighteenth-century Cadiz | Fannin, Samuel | Article in Book | | 2003 |
| The Irish community in Greenock in the 19th century | Lobban, R. D. | Article in Journal | | 1971 |
| The Irish congregations in nineteenth-century Montreal | Keep, G. R. C. | Article in Journal | | 1950 |
| The Irish continental college movement : the colleges at Bordeaux, Toulouse and Lille | Walsh, T. J. (Timothy J.) | Monograph or Collective Volume | Golden Eagle Books | 1973 |
| The Irish continental colleges | Swords, Liam | Article in Journal | | 1982 |
| The Irish contribution to the organization of the catholic church in South Africa in the nineteenth century | Doyle, J., Rev. | Thesis | | 1963 |
| The Irish Convention in Trinity College | Connell, Joseph E.A., Jr | Article in Journal | | 2017 |
| The Irish dames of Ypres and the Butler connection | Butler, John J. | Article in Journal | | 1988 |
| The Irish dimension of the British Kulturkampf : Vaticanism and civil allegiance, 1870-1875 | Jenkins, H. | Article in Journal | | 1979 |
| The Irish discalced Carmelites, 1625-53 | O'Mahony, Séamus Anthony | Thesis | | 1978 |
| The Irish disestablishment conference of 1869 | Fair, John D. | Article in Journal | | 1975 |
| The Irish Dominican mission to the Danish West Indies, 1758-1771 | Fenning, Hugh | Article in Journal | | 1965 |
| The Irish Dominican mission to the Danish West Indies, 1758-71 | Fenning, Hugh | Article in Journal | | 1965 |
| The Irish Dominican province (1761-1765), with some notes on its missionaries in Scotland (1765-1773) | Fenning, Hugh | Article in Journal | | 1977 |
| The Irish Dominican province (1765-1778) | Fenning, Hugh | Article in Journal | | 1979 |
| The Irish Dominican province (1778-1785) | Fenning, Hugh | Article in Journal | | 1985 |
| The Irish Dominican province 1778 | Fenning, Hugh | Article in Journal | | 1979 |
| The Irish Dominican Province 1785-1797 | Fenning, Hugh | Article in Journal | | 1986 |
| The Irish Dominican province at the beginning of its decline (1745-1761) | Fenning, Hugh | Article in Journal | | 1975 |
| The Irish Dominican province in the final decades of persecution (1721-1745) | Fenning, Hugh | Article in Journal | | 1972 |
| The Irish Dominican province under appointed superiors (1698-1721) | Fenning, Hugh | Article in Journal | | 1968 |
| The Irish Dominicans, 1534-1641 | Flynn, Thomas Simeon | Thesis | | 1988 |
| The Irish Dominicans, 1536-1641 | Flynn, Thomas S. | Monograph or Collective Volume | Four Courts | 1993 |
| The Irish Dominicans, 800 years, 1224-2024 | Crotty, Terence | Monograph or Collective Volume | Dominican Publications | 2025 |
| The Irish Ecclesiastical Record and Maynooth | Wall, Thomas | Article in Journal | | 1945 |
| The Irish Emigrant Chaplaincy Scheme in Britain, 1957-82 | O'Shea, Kieran | Monograph or Collective Volume | The author | 1985 |
| The Irish episcopate and pastoral care, 1318-1534 | Burrows, Michael | Thesis | | 1986 |
| The Irish flood : famine, philanthropy, and the emergence of duelling Liverpool Catholic identities, 1845-1865 | Dye, Ryan | Article in Journal | | 2003 |
| The Irish Franciscan continental colleges and the doctrine of the Immaculate Conception | Mac Craith, Mícheál | Article in Book | | 2019 |
| The Irish Franciscan mission ot the Highlands and Islands | Harris, Jason | Article in Book | | 2016 |
| The Irish Franciscan mission to Scotland in the 17th century | Giblin, Cathaldus | Article in Journal | | 1952 |
| The Irish Franciscans in Poland | Jennings, Brendan | Article in Journal | | 1957 |
| The Irish Franciscans in Prague 1629-1786 : history of the Franciscan College of the Immaculate Conception of the Virgin Mary in Prague | Kucharova, HedvikaParez, Jan | Monograph or Collective Volume | Charles University | 2015 |
| The Irish fright of 1688 : real violence and imagined massacre | Jones, G. H. | Article in Journal | | 1982 |
| The Irish hedge schoolmaster in the American backcountry | Koos, Greg | Article in Journal | | 2001 |
| The Irish hierarchy and the queen's colleges (1845-50) | Hegarty, W. J. | Article in Journal | | 1945 |
| The Irish Holy Ghost Order's involvement in the Nigerian civil war, 1967-1970 | Mooney, Olive | Thesis | | 1999 |
| The Irish hybrid lists of the Seven Heavens | Smyth, Marina | Article in Book | | 2015 |
| The Irish in Asturias : the footprint of the Irish College, Salamanca, 1913-1950 | Richardson, Regina Whelan | Article in Journal | | 2012 |
| The Irish in Britain | O'Connor, Kevin | Monograph or Collective Volume | Sidgwick & Jackson | 1972 |
| The Irish in Britain, 1780-1921 | Collins, Brenda | Article in Book | | 1993 |
| The Irish in Britain, 1815-1939 | | Monograph or Collective Volume | Pinter | 1989 |
| The Irish in Canada | Wilson, David A. | Monograph or Collective Volume | Canadian Historical Association | 1989 |
| The Irish in Kilburn : myth and reality | Colloms, MarianneWeindling, D. | Article in Journal | | 2002 |
| The Irish in Kilburn and the Church of the Sacred Heart, Quex Road | Alpert, Michael | Article in Journal | | 2001 |
| The Irish in modern Scotland | Handley, J. E. | Monograph or Collective Volume | University P. | 1947 |
| The Irish in North America : Catholic or Protestant? | Akenson, Donald Harman | Article in Journal | | 1991 |
| The Irish in North America : new perspectives | Wilson, David A. | Article in Journal | | 1988 |
| The Irish in the Argentine republic : John Cullen's 1888 report | Walsh, Edward | Article in Journal | | 2001 |
| The Irish in the Iberian Atlantic and Rome: Globalized individuals and the rise of Transatlantic networks of information | Pérez Tostado, Igor | Article in Book | | 2019 |
| The Irish in the Victorian city | | Monograph or Collective Volume | Croom Helm | 1985 |
| The Irish influence on the Australian Catholic Church | Ryan, Christopher | Article in Journal | | 2000 |
| The Irish influence on the Roman Catholic church in South Africa | Brain, J. B. | Article in Book | | 1992 |
| The Irish instruction of 1775 | Ó Fearghail, Fearghus | Article in Journal | | 2008 |
| The Irish laity : some findings of the 1984 national survey | Weafer, John | Article in Journal | | 1986 |
| The Irish land question and sectarian violence | Crotty, Raymond, 1925-1994 | Monograph or Collective Volume | Economic & Social Research Council | 1981 |
| The Irish layman | Brown, T. N. | Article in Book | | 1970 |
| The Irish legal profession and the Catholic revival 1660-89 | Maynard, Hazel | Article in Book | | 2009 |
| The Irish martyrs | Corish, Patrick J. | Monograph or Collective Volume | Veritas | 1989 |
| The Irish martyrs and Irish history | Corish, Patrick J. | Article in Journal | | 1993 |
| The Irish mission in west Florida | Din, Gilbert C. | Article in Journal | | 1971 |
| The Irish Missionary Movement : A historical survey 1830-1980 | Hogan, Edmund M. | Monograph or Collective Volume | | 1990 |
| The Irish missionary movement : a historical survey, 1830-1980 | Hogan, E. M. | Monograph or Collective Volume | Gill & Macmillan|Catholic University of America Press | 1990 |
| The Irish Pallottines | McCarthy, Donal | Article in Book | | 1989 |
| The Irish Papal Brigade : origins, objectives and fortunes | O'Carroll, Ciarán | Article in Book | | 2014 |
| The Irish parliamentary tradition : With three essays on the Treaty debate by F.S.L. Lyons | Lyons, F. S. L. (Francis Stewart Leland) | Monograph or Collective Volume | Gill & Macmillan|Barnes & Noble Books | 1973 |
| The Irish Peasant and the conflict between Irish-Ireland and the Catholic bishops | Biletz, Frank A. | Article in Book | | 2000 |
| The Irish Popery laws : a study of 18th century legislation and behavior | Burns, R. E. | Article in Journal | | 1962 |
| The Irish presence in the north of England, 1850-1914 | Steele, Edward David | Article in Journal | | 1976 |
| The Irish priests in the penal times (1660-1760) | Burke, William P. | Monograph or Collective Volume | | 1914 |
| The Irish question and the question of drunkenness : Catholic loyalty in nineteenth-century Liverpool | Beckingham, David | Article in Journal | | 2009 |
| The Irish question and the revival of anti-Catholicism in the 1920's | Cuddy, E. | Article in Journal | | 1981 |
| The Irish regulars in early-modern Paris : a re-examination | Chambers, Liam | Article in Book | NA | 2022 |
| The Irish remonstrance of 1317 : an international perspective | Phillips, J.R.S. (John Roland Seymour) | Article in Book | | 2009 |
| The Irish shrines of our Lady | Canice, Fr. | Article in Journal | | 1947 |
| The Irish Sisters of Mercy in the Crimea | Bolster, Ellen | Thesis | | 1961 |
| The Irish Ulster Scot | Logan, Liam | Article in Journal | | 2013 |
| The Irish war of defence, 1598-1600 : extracts from the 'De Hibernia Insula Commentarius' of Peter Lombard, archbishop of Armagh. Edited, with introduction and translation | | Monograph or Collective Volume | | 1930 |
| The Irish World, FDR, and the Great Depression | Hanley, Brian | Article in Journal | | 2003 |
| The Irish-French conflict in catholic episcopal nominations : the Western Sees and the struggle for domination within the church | Huel, R. | Article in Journal | | 1975 |
| The Irish-speaking clergy in the nineteenth century: Education, trends and timing | Wolf, Nicholas M. | Article in Journal | | 2008 |
| The island of the saints and the homeland of the martyrs : Monsignor O’Riordan, Father Hagan and the boundaries of the Irish Nation (1906-1916). | Cefaloni, Simon | Article in Journal | | 2019 |
| The Jacobite Chapel Royal at Saint-Germain-en-Laye | Corp, Edward T. | Article in Journal | | 1997 |
| The Jacobites : Britain and Europe, 1688-1788 | Szechi, Daniel | Monograph or Collective Volume | Manchester University Press | 1994 |
| The Jesuit fathers and University College | Gwynn, Aubrey | Article in Book | | 1954 |
| The Jesuit houses in Ireland | Scantlebury, C. | Article in Journal | | 1944 |
| The Jesuit mission to Ireland, 1596-1626 | Corboy, James | Thesis | | 1941 |
| The Jesuit university of Dublin, c.1627 | Little, G. A. | Article in Journal | | 1952 |
| The Jesuit urban mission in Ireland, c.1598–1650 | Lennon, Colm | Article in Book | | 2022 |
| The Jesuits - Limerick and Oola connections | Ryan, Patrick M. | Article in Journal | | 1997 |
| The Jesuits and Athlone in the 17th and 18th centuries | Finegan, Francis | Article in Journal | | 1971 |
| The Jesuits and music in early modern Ireland | Gillespie, Raymond, 1955-2024 | Article in Book | | 2022 |
| The Jesuits and the 1937 constitution | Keogh, Dermot | Article in Journal | | 1989 |
| The Jesuits and the 1937 constitution | Keogh, Dermot | Article in Book | | 2012 |
| The Jesuits and the drafting of the Irish constitution of 1937 | Faughnan, Seán | Article in Journal | | 1988 |
| The Jesuits come to Ireland | O'Donoghue, Fergus | Article in Journal | | 1991 |
| The Jesuits in Dublin 1598-1998 | Browne, FrankO'Donnell, E. E. | Monograph or Collective Volume | Wolfhound Press | 1999 |
| The Jesuits in Limerick before and after the siege | Roche-Kelly, Hubert | Article in Book | | 1951 |
| The Jesuits in Waterford | Power, P. | Article in Journal | | 1947 |
| The Jesuits, Mary, and Joseph : the Catholic Workers' College, Dublin, 1951-66 | Limond, David | Article in Journal | | 2016 |
| The Jesuits, Mary, and Joseph :the Catholic Workers' College, Dublin, 1951-66 | Limond, David | Article in Journal | | 2016 |
| The Jews, Fr. Creagh and the Mayor's court of conscience | Ryan, Desmond | Article in Journal | | 2002 |
| The journey of James Lyons from Rome to Sligo, 1763-5 | | Article in Journal | | 1968 |
| The journey to establish a second National School at Lismagirl, Killinkere | Tansey, Mary Flynn | Article in Journal | | 2021 |
| The keeper's recital : music and cultural history in Ireland, 1770-1970 | White, Harry | Monograph or Collective Volume | Cork University Press in association with Field Day | 1998 |
| The Kennedys, Ireland and Irish America | Ahtes, John H. | Article in Journal | | 1991 |
| The Killaloe anthology | Kierse, Sean | Monograph or Collective Volume | Boru Books | 2001 |
| The Kinsale nuns in the Crimea, 1854-1856 | Hurley, Frank | Article in Journal | | 1986 |
| The Knights of Columbanus : lay activism from the origins through the Great Depression | Kauffman, C. J. | Article in Journal | | 1990 |
| The Knights of Columbanus : lay activism from the origins through the Great Depression | Kauffman, C. J. | Article in Journal | | 1990 |
| The Knights of Malta : 900 years of care | McHugh, Rosita | Monograph or Collective Volume | Irish Association of the Sovereign, Military and Hospitaller Order of St John of Jerusalem, of Rhodes and of Malta | 1996 |
| The Knights of Saint Columbanus | Bolster, Evelyn | Monograph or Collective Volume | | 1979 |
| The Knights of St. Columbanus | Bolster, Evelyn | Monograph or Collective Volume | Gill & Macmillan | 1979 |
| The lady next door | Begbie, Edward HaroldMaume, Patrick | Monograph or Collective Volume | University College Dublin Press | 2006 |
| The Lancashire Irish and the Catholic Church 1846-71 : the social dimension | Lowe, W. J. | Article in Journal | | 1976 |
| The lands of the Cross of Holy Trinity, Dublin, in Lechaathel | Connolly, Al | Article in Journal | | 1998 |
| The last community : Irish Franciscans after the dissolution of the Prague College, 1786 | Kucharova, HedvikaParez, Jan | Article in Book | NA | 2014 |
| The last Irish scribe | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1941 |
| The last priests of Lisanuffy | Browne, Raymond | Article in Journal | | 1996 |
| The last speech and prayer of Blessed Terence Albert O'Brien, Bishop of Emly, 1651 | | Article in Journal | | 1996 |
| The last speech of Blessed Oliver Plunket | | Article in Journal | | 1947 |
| The last will and testament of archbishop Daniel Murray of Dublin (d. 1852) | | Article in Journal | | 1979 |
| The last years of a confessor of the Faith : Fr. David Wolf | Da Costa, Manuel | Article in Journal | | 1946 |
| The last years of Bishop T. A. O'Brien, O.P. | Taheny, L. | Article in Book | | 1951 |
| The later pilgrimage - Irish poetry on Lough Derg | Ní Chatháin, Próinséas | Article in Book | | 1988 |
| The Lavey Green walk | Cunningham, Terence | Article in Journal | | 1961 |
| The law the nun and Edmund Burke | Lambert, Elizabeth R. | Article in Book | | 2005 |
| The Lawless sortie into Co. Monaghan : September-October 1828 | Murnane, James H. | Article in Journal | | 1990 |
| The leading Catholics of Waterford in 1792 | Ffolliott, Rosemary | Article in Journal | | 1976 |
| The legacy of a pioneer of female education in Ireland : tercentennial considerations of Nano Nagle and Presentation schooling | Bennett, DeirdreDelaney, CatrionaRaftery, Deirdre | Article in Journal | | 2019 |
| The legacy of Newman | Meehan, D. | Article in Journal | | 1946 |
| The legal and constitutional organization of the Catholic Church in nineteenth-century Ireland | Rafferty, Oliver P. | Article in Book | | 2021 |
| The Lenaghan Fathers of Crossmaglen | Hanratty, Dennis | Article in Journal | | 2002 |
| The letter under the pillow : 150 years, 2 continents, 840 heroic Irish women | Aherne, Clare | Monograph or Collective Volume | Carrowmore Publishing | 2016 |
| The letters and diaries of John Henry Newman : Vol 16 | Dessain, C. S.Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1965 |
| The letters and diaries of John Henry Newman, Vol 14 : Papal agression, 1850 - 1851 | Blehl, Vincent FerrerDessain, Charles StephenNewman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1963 |
| The letters and diaries of John Henry Newman, Vol 21 : The Apologia, 1864-1865 | Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1971 |
| The letters and diaries of John Henry Newman, Vol. 18 : new beginnings in England, 1857-1858 | Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1968 |
| The letters and diaries of John Henry Newman. Vol. 15 | Blehl, Vincent FerrerDessain, Charles StephenNewman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1964 |
| The letters and diaries of John Henry Newman. Vol. 17 | Blehl, Vincent FerrerDessain, Charles StephenNewman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1967 |
| The letters of an Irish Brother Edward Sinnott S.J., from Calcutta, Part 2, 1837-43 | Laheen, Kevin | Article in Journal | | 2006 |
| The letters of Charles O'Connor of Belanagare; vol. 1 : 1731-1771 | O'Connor, CharlesWard, C. C.Ward, Robert E. | Monograph or Collective Volume | UMI, Monographs for the Irish American Cultural Institute | 1980 |
| The letters of Charles O'Conor of Belanagare. 2 vols. | Ward, C. C.Ward, R. E. | Monograph or Collective Volume | | 1980 |
| The letters of Luke Wadding | Mooney, Canice | Article in Journal | | 1957 |
| The letters of Oliver Plunkett, 1625-81, archbishop of Armagh and primate of all Ireland | Hanly, JohnPlunkett, Oliver, bishop and saint, 1625-1681 | Monograph or Collective Volume | Dolmen Press | 1979 |
| The letters of Saint Oliver Plunkett, 1625-1681 : Archbishop of Armagh and Primate of all Ireland | | Monograph or Collective Volume | | 1979 |
| The letters of Saint Oliver Plunkett, 1625-1681, Archbishop of Armagh and Primate of All Ireland | | Monograph or Collective Volume | | 1979 |
| The letters of St. Oliver Plunkett | | Monograph or Collective Volume | Dolmen Press | 1979 |
| The Levellers and the conquest of Ireland in 1649 | Carlin, Norah | Article in Journal | | 1987 |
| The liberal Catholicism of Patrick O'Donohue and the Tasmanian crisis of 1850 | Davis, Richard P. | Article in Journal | | 1969 |
| The library of a parish priest of the penal days : introduction | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| The library of a preacher of Drogheda : John Donnelly, O.P. (d. 1748) | | Article in Journal | | 1978 |
| The library of an Irish Catholic émigré : Michael Moore's 'bibliotheque', 1726 | Chambers, Liam | Article in Journal | | 2004 |
| The library of Archbishop Piers Creagh | Mooney, Canice | Article in Journal | | 1955 |
| The library of Bishop William Daton of Ossory, 1698 | | Article in Journal | | 1978 |
| The library of Dennis Molony (1650-1726), an Irish Catholic lawyer in London | [Sale catalogue] | Article in Journal | | 2009 |
| The library of the Augustinians of Galway in 1731 | | Article in Journal | | 1990 |
| The life & times of Patrick Comerford O.S.A. (1586-1652) : Counter-Reformation Bishop of Waterford and Lismore 1629-1652 | Olden, Michael G. | Monograph or Collective Volume | The author | [2013?] |
| The life and times of a rural parish priest, 1896-1908 | Higgins, Seán | Article in Book | | 2006 |
| The life and times of Archbishop Denis O'Driscoll (1600-1650) | Coombes, James | Article in Journal | | 1965 |
| The life and times of Bishop Edward Kernan | Mulligan, Patrick | Article in Journal | | 1981 |
| The life and times of Daniel Murray : Archbishop of Dublin, 1823-1852 | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2018 |
| The life and times of Father Bernard Murphy : Termon, Carrickmore 1832-1897 | Bradley, John, Rev.Murphy, Eddie | Monograph or Collective Volume | Eddie Murphy | 1994 |
| The life and times of Father Mathew | Shaw, H.B.P., Rev. | Thesis | | 1939 |
| The life and times of Fr Michael O'Donovan SVD | O'Donovan, Michael | Article in Journal | | 2006 |
| The life and times of Fr. Sean Manning (a Gaelic leader) | Guckian, Des | Monograph or Collective Volume | The author | 1979 |
| The life of Dr Thomas Hussey (1746-1803), bishop of Waterford and Lismore | Murphy, William Gerald | Thesis | | 1968 |
| The life of Elisabeth, Lady Falkland, 1585-1639 | Fullerton, G. C. | Monograph or Collective Volume | | 1883 |
| The life of Elizabeth, Lady Falkland, 1585-1639 | Fullerton, Brian | Monograph or Collective Volume | [s.n.] | 1883 |
| The life of Father Theobald Mathew, O. M. Cap., apostle of temperance | Rogers, Patrick | Article in Journal | | 1939 |
| The life of Frederick Lucas, M.P. 2 vols. | Lucas, Edward | Monograph or Collective Volume | | 1886 |
| The life of Sir Denis Henry : Catholic Unionist | McDonnell, A. D. | Monograph or Collective Volume | Ulster Historical Foundation | 2000 |
| The life of the Rev. James Coigly ... as written by himself | Coigly, James | Monograph or Collective Volume | | 1798 |
| The life, times, and correspondence of the Rt. Rev. Dr. Doyle, Bishop of Kildare and Leighlin | Fitzpatrick, W. J., 1830-1895 | Monograph or Collective Volume | | 1861 |
| The light that never goes out : the life of Father Joe Foy, PP, 1841-1918 | McGuire, Jim | Monograph or Collective Volume | Jim McGuire | 2012 |
| The Limerick bishop who said no to papal infallibility | Irwin, Liam | Article in Journal | | 1993 |
| The Little Ark of Kilbaha | Ó Sé, Liam | Article in Journal | | 2003 |
| The logic of collective sacrifice : Ireland and the British army, 1914-1918 | Fitzpatrick, David | Article in Journal | | 1995 |
| The Lombards of Lombardstown | Lombard, John | Article in Journal | | 2015 |
| The London Catholic Ragged School : an experiment in education for Irish destitute children | Feheney, J. P. M. | Article in Journal | | 1984 |
| The long rupture, 1870–1970 : the darker side of Franco-Irish relations | aan de Wiel, Jéróme | Article in Journal | | 2015 |
| The Lord and Labour: Irish clerical attitudes to the workers' question, 1903-1920 | Maguire, Paul | Article in Journal | | 2011 |
| The Lords Baltimore in Ireland and North America: the beginning of an Atlantic world | Lyttleton, James | Article in Journal | | 2013 |
| The Lost Paradise : an account of the Jesuits in Paraguay, 1607-1768 | Caraman, Philip, 1911- | Monograph or Collective Volume | Sidgwick & Jackson | 1975 |
| The MacGlynn affair and the shaping of the new conservatism in American Catholicism 1886-1894 | Curran, Robert Emmet | Article in Journal | | 1980 |
| The Madonna of Lettershendony, Co. Derry | Jefferies, Henry A. | Article in Journal | | 1997 |
| The Maher-Crolly controversy, 1850 | MacAuley, Ambrose | Article in Journal | | 1984 |
| The Maher-Crolly controversy, 1850 | Macaulay, Ambrose | Article in Journal | | 1984 |
| The making of an ethnic collectivity : Irish Catholic immigrants in nineteenth-century Christchurch | Fraser, Lyndon A. | Article in Journal | | 1996 |
| The making of an Irish and a Jewish Boston, 1820-1900 | Dwyer-Ryan, Meaghan | Article in Journal | | 2016 |
| The making of an Irish nuncio. The early career of Paschal Robinson OFM, the first papal nuncio the the Irish Free State, 1929-1948 | Morrissey, Thomas J. | Article in Journal | | 2019 |
| The making of folk plays | Molloy, Michael J. | Article in Book | | 1977 |
| The making of Hibernian; 2 : 1893-1914, the brave years | Lugton, Alan | Monograph or Collective Volume | John Donald | 1997 |
| The making of the archbishops of Tuam : the appointment of Archbishop John McEvilly | Waldron, Kieran | Article in Journal | | 2006 |
| The Making of the Modern Diocese of Galloway | Aspinwall, Bernard | Article in Book | | 1997 |
| The making of the Roman Catholic church in Ireland, 1850-1860 | Larkin, Emmet | Monograph or Collective Volume | University of North Carolina Press | 1980 |
| The manuscripts of the Annals of the Four Masters | Cunningham, Bernadette | Article in Journal | | 2007 |
| The marginal kingdom : Ireland as a problem in the first British empire | Canny, Nicholas P. | Article in Book | | 1991 |
| The Marian shrine of Knock : the first decade | Donnelly, James S., Jr | Article in Journal | | 1993 |
| The Marian Society | Behan, Maura | Article in Journal | | 2000 |
| The Marist sisters | McGuinness, Brigid Jane | Article in Journal | | 1998 |
| The Martyrology of Donegal : a calendar of the saints of Ireland | | Monograph or Collective Volume | Irish Archaeological & Celtic Society | 1864 |
| The Mary missions of Matthew Gibney, part 1-2 | Carrey, Joan Francis | Article in Journal | | 2002 |
| The Mass rock - Poll an Aifrinn in Kilclohane Wood : the martyrdom of Fr. Thaddeus (Tadhg) Moriarty O.P. | Lawlor, Lally | Article in Journal | | 1997 |
| The mauve decade : American life at the end of the nineteenth century | Beer, Thomas | Monograph or Collective Volume | Garden City | 1926 |
| The Maynooth College archive | Corish, Patrick J. | Article in Journal | | 1995 |
| The Maynooth grant, the dissenters and disestablishment, 1845-7 | Machin, George Ian Thom | Article in Journal | | 1967 |
| The Maynooth question of 1845 | Norman, E. R. | Article in Journal | | 1966 |
| The Memoir of Dermot O'Conor Donelan (1853-1929) | Foster, R. F. (Robert Fitzroy) (Roy), 1949- | Article in Journal | | 2024 |
| The memoirs of John M. Regan : a Catholic officer in the RIC and RUC, 1909-1948 | Regan, John M., 1889-1971 | Monograph or Collective Volume | Four Courts | 2007 |
| The migration of Ulster Catholics to Connaught, 1795-96 : an addendum | Hogan, Patricia | Article in Journal | | 1986 |
| The military and hospitaller order of St Lazarus of Jerusalem | Lee, Gerard A. | Article in Journal | | 1968 |
| The ministry of music - remembering Palestrina | Daly, Cathal B. | Article in Journal | | 1994 |
| The minority problem in the 26 counties | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1967 |
| The miracle of Ireland | | Monograph or Collective Volume | Clonmore & Reynolds | 1959 |
| The Missionary Society of Columban, 1916-1954 | Collins, Neil | Thesis | | 2007 |
| The missions : Africa and the Orient | McGlade, Joseph | Monograph or Collective Volume | Gill | 1967 |
| The mitred earl : an 18th century eccentric | Fothergill, Brian | Monograph or Collective Volume | Faber | 1974 |
| The modern Irish missionary movement | Cooke, Colm | Article in Journal | | 1980 |
| The modern story of St Cronan's Roscrea, Co. Tipperary : its clergy, people and parochial buildings | Cunningham, George | Monograph or Collective Volume | Roscrea People | 2001 |
| The Molly Maguires and the Catholic church | Kenny, Kevin, 1960- | Article in Journal | | 1995 |
| The monasteries, Magdalen asylums and reformatory schools of Our Lady of Charity in Ireland, 1853-1973 | Prunty, Jacinta | Monograph or Collective Volume | Columba Press | 2017 |
| The Moneystown Mass Paths | Timmons, Mauny | Article in Journal | | 2004 |
| The Moriarty chalice | Anonymous | Article in Journal | | 2006 |
| The mortgage papers of St. Patrick's College, Maynooth 1871-1923 | Dooley, Terence A. M. | Article in Journal | | 2005 |
| The mother and child scheme | Coyne, E. J. | Article in Journal | | 1998 |
| The Motivation of the Modern Irish Missionary Movement 1912-1939 | Hogan, Edmund M. | Article in Journal | | 1979 |
| The Moylan correspondence in Bishop's House, Killarney | NA | Article in Journal | | 1972 |
| The Mullyash murders of 1837 | Curran, Daragh | Article in Journal | | 2015 |
| The Murnaghan memos : Catholic concerns with the third Home Rule bill, 1912 | Mulvagh, Conor | Article in Book | | 2014 |
| The Murphy riots : a Victorian dilemma | Arnstein, Walter L. | Article in Journal | | 1975 |
| The Murphys of Lullymore, 1800-1932: a modern fiefdom | McKernan, Fiona | Article in Journal | | 2019 |
| The name of the diocese | McKenna, John | Article in Journal | | 1991 |
| The narrow ground : patterns of Ulster history | Stewart, Anthony Terence Quincey, 1929-2010 | Monograph or Collective Volume | Pretani Press | 1986 |
| The narrow ground : the roots of conflict in Ulster | Stewart, Anthony Terence Quincey, 1929-2010 | Monograph or Collective Volume | Faber | 1989 |
| The narrow road : Harry Midgley and Catholic schools in Northern Ireland | McGrath, Michael | Article in Journal | | 1997 |
| The nationalism of Canon Sheehan | Hurley, James | Thesis | | 1956 |
| The network structure of Catholic Irish migration to nineteenth- century Canterbury, New Zealand | Fraser, Lyndon | Article in Book | | 1996 |
| The new Church of St Patrick - laying the foundation stone, 1856 | Walsh, Chris | Article in Journal | | 1994 |
| The new St Malachy's : building and finance | Ó Muirí, Réamonn | Article in Book | | 2013 |
| The New Zealand Tablet and the Irish Catholic Press Worldwide, 1898-1923 | McNamara, Heather | Article in Journal | | 2003 |
| The nineteenth century novel and Irish social history : some aspects | MacDonagh, Oliver | Monograph or Collective Volume | National University of Ireland | 1971 |
| The North : a conundrum of identity | Bennett, Jack | Article in Book | | 1998 |
| The northern Catholic | Fennell, Desmond | Monograph or Collective Volume | Mount Salus Press | 1958 |
| The northern dioceses and the Irish College of Alcalá, Spain | O Connell, Patricia | Article in Journal | | 1993 |
| The Northern Ireland civil rights movement | Purdie, Bob | Article in Book | | 1995 |
| The Northern Ireland problem : a study in group relations | Barritt, D. P. | Monograph or Collective Volume | Oxford University Press | 1972 |
| The novelist of 'New Street' | Mícheál, Fr. | Article in Book | | 1942 |
| The nun of Kenmare | Boyle, Brian | Monograph or Collective Volume | The author | 2014 |
| The nuns in Kerry : the unsung heroines of the famine | O'Shea, Kieran | Article in Book | | 1997 |
| The O'Sullivan bourse in Louvain | De Rís, Seorise | Article in Journal | | 1997 |
| The obligation of Titus: a theological opinion concerning worthiness for episcopal office in the diocese of Ferns, 1645 | McHugh, Jason | Article in Journal | | 2017 |
| The official Presbyterian Irish language policy in the 18th and 19th centuries | Fitzsimons, J. | Article in Journal | | 1949 |
| The Old Brotherhood of the English secular clergy : catalogue of the archives | Anonymous | Monograph or Collective Volume | Catholic Record Society | 1968 |
| The old chapel in the late 1920s and early 1930s | Ó hÁdhmaill, Pádraig | Article in Book | | 2013 |
| The old school tie - no 2, Rockwell College | Collins, Tom | Article in Journal | | 1946 |
| The oldest church in Ireland's 'oldest town' | Ó Donnchadha, Brian | Article in Journal | | 2007 |
| The oldest Skerries society [Talk given 1973] | Harford, Margaret | Article in Journal | | 2008 |
| The only lever ... ? : the Catholic priest in Irish politics 1823-29 | O'Ferrall, Fergus | Article in Journal | | 1981 |
| The opening of the Vatican archives (1880-1881) and Irish historical research | Walsh, K. | Article in Journal | | 1981 |
| The operation of the anti Popery laws against Catholic property | Ó Dálaigh, Brian | Article in Journal | | 2006 |
| The operation of the penal laws against the protestant non-conformists in Ireland in the eighteenth century | Beckett, J.C. | Thesis | | 1941 |
| The Orange and Green Riots (New York City : July 12, 1870 & 1871) | Sullivan, Stephen J. | Article in Journal | | 1991 |
| The Orange card : racism, religion and politics in Northern Ireland | Campbell, Flann | Monograph or Collective Volume | Connolly Publications | 1979 |
| The ordeal of O'Conor of Belanagare | Ward, C. C.Ward, R. E. | Article in Journal | | 1979 |
| The order of Carmel and the Blackrock Monastery | O'Neill, Monica | Article in Journal | | 1998 |
| The Order of Liberators | Snoddy, Oliver | Article in Journal | | 1966 |
| The Order of Liberators | Barron, Declan | Article in Journal | | 2020 |
| The ordination in Ireland of Jansenist clergy from Utrecht, 1715-16 : the role of Fr Paul Kenny, ODC of Co. Galway, part 1 | Mitchell, James | Article in Journal | | 1989 |
| The ordination in Ireland of Jansenist clergy from Utrecht, 1715-16 : the role of Fr Paul Kenny, ODC, of Co. Galway | Mitchell, James | Article in Journal | | 1991 |
| The organization of the Irish church, 1603-1641 | Corish, Patrick J. | Article in Journal | | 1957 |
| The origin of Irish Catholic-nationalism | Clifford, Brendan | Monograph or Collective Volume | Athol | 1992 |
| The origin of Mount Melleray Abbey | Heaney, Columban | Article in Journal | | 1983 |
| The origins and progress of the Catholic question in Ireland, 1690-1800 | Bartlett, Thomas | Article in Book | | 1990 |
| The origins of Catholic nationalism | Corish, Patrick J. | Monograph or Collective Volume | Gill | 1968 |
| The origins of sectarianism in early modern Ireland | | Monograph or Collective Volume | Cambridge University Press | 2005 |
| The origins of St Mary's Church, Ballygar,its history, and importance to Ballygar, Elphin diocese and Ireland. {1832-1863} | MacNamara, Jarlath | Article in Journal | | 2019 |
| The origins of the Catholic University of Ireland, 1845-54 | Vale, Mary D. | Article in Journal | | 1954 |
| The origins of the Irish in Newcastle and County Durham | Duffy, Godfrey | Article in Journal | | 2002 |
| The origins of the troubles in northern Ireland : an historical background | McCarney, W. G. | Article in Journal | | 1996 |
| The origins, development and decline of vocationalism in twentieth-century Ireland | O'Leary, Donald | Thesis | | 1996 |
| The other '98 | Whelan, Ruth | Article in Book | | 2003 |
| The other Irish mission: Spanish patronage and Catholic hierarchy in the Seventeenth Century | Bravo Lozano, Cristina | Article in Book | | 2019 |
| The outbreak of the Irish rebellion of 1641 | Perceval-Maxwell, Michael | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| The Oxford History of British and Irish Catholicism, Volume I : Endings and New Beginnings, 1530-1640 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume II : Uncertainty and Change, 1641-1745 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume III : Relief, Revolution, and Revival, 1746-1829 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume IV : Building Identity, 1830-1913 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume V : Recapturing the Apostolate of the Laity, 1914-2021 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The papacy and episcopal appointments in Ireland, 1305-34 | Williams, Patrick | Thesis | | 1961 |
| The papal brigade of St Patrick | O'Carroll, Ciaran | Article in Book | | 2008 |
| The papal mission to Ireland of James Taaffe in 1668 | Millett, Benignus | Article in Book | | 1995 |
| The papers of Nicholas Archdeacon (bishop of Kilmacduagh and Kilfenora 1800-1823) | Murphy, P. J. | Article in Journal | | 1973 |
| The parish church of Saints Mary and Peter, Arklow | Tyrrell, Dolores | Article in Journal | | 1985 |
| The parish churches of North Tipperary : commemorating a two-hundred year heritage | Hayes, William J.Kennedy, Joseph | Monograph or Collective Volume | Lisheen Publications | 2007 |
| The parish clergy of Tuam, 1712-1809 | | Article in Journal | | 1998 |
| The parish fraternities and county Meath in the late middle ages | Lennon, Colm | Article in Journal | | 2008 |
| The Parish Mission Movement, 1850-1880 | Larkin, Emmet | Article in Book | | 2002 |
| The parish of Cloughbawn | Harte, Laurence | Article in Journal | | 1925 |
| The Parish of Denn in the early 1800s | Kelly, Liam | Article in Journal | | 2011 |
| The parish of Iniscealtra | Madden, Gerard | Article in Book | | 1993 |
| The parish of Kilmeen (Boherbue-Kilkeam) | McCarthy, Louis | Article in Journal | | 1997 |
| The Parish of Kilmore | Ó Fiaich, Tomás, d.1990 | Article in Journal | | 2010 |
| The parish of St Joseph's, Hannahstown, Co. Antrim, 1826-1993 | Fulton, Eileen | Monograph or Collective Volume | Ulster Journals | 1993 |
| The parish of Stradbally, Ballylaneen, Faha, Co. Waterford 1685-1990 | Ryan, Michael | Monograph or Collective Volume | Michael J. Ryan | 1990 |
| The parish priests of Maryborough, 1815-1941(obituaries) | Leinster Express | Article in Journal | | 1992 |
| The parliamentary reform movement of the 1780s and the Catholic question | Kelly, James, 1959- | Article in Journal | | 1988 |
| The Parnell split, 1890-91 | Callanan, Francis | Thesis | | 1991 |
| The partition of Ireland : how and why it was accomplished | O'Neill, David | Monograph or Collective Volume | Gill | 1946 |
| The Passionists : centenary of the Passionists in Ireland, 1856-1956 | Anonymous | Monograph or Collective Volume | St Paul's Retreat | 1956 |
| The past is history : Catholics in modern Scotland | McCrone, DavidRosie, Michael | Article in Book | | 2000 |
| The pastoral and education letters of Bishop James Doyle of Kildare and Leighlin, 1786-1834 | | Monograph or Collective Volume | Four Courts | 2004 |
| The pastoral function of church archives : a reflection on the theological, juridical and pastoral context of Roman Catholic diocesan archives | Bracken, David | Article in Journal | | 2017 |
| The pastoral letters and other writings of Cardinal Cullen, Archbishop of Dublin ... 3 vols. | | Monograph or Collective Volume | | 1882 |
| The pastoral politics of Paul Cullen | O'Carroll, Ciaran | Article in Book | | 2000 |
| The pastoral role of the Roman Catholic Church in pre-famine Ireland 1750-1850 | Larkin, Emmet | Monograph or Collective Volume | Four Courts|Catholic University of America Press | 2006 |
| The pastoral vision of Paul Cullen | O'Carroll, Ciaran | Article in Book | | 2011 |
| The pastoral zeal of Robert Wauchope | Millett, Benignus | Article in Journal | | 1956 |
| The path of Mercy : the life of Catherine McAuley | Sullivan, Mary C. | Monograph or Collective Volume | Four Courts|Catholic University of America | 2012 |
| The Patrician brothers in Fethard, 1873-1993 | McInerney, J.Others | Monograph or Collective Volume | Fethard Historical Society | 1997 |
| The Patrician brothers in Mallow ... 1879 to 1994 | Ruane, Kevin | Article in Journal | | 1994 |
| The patriot priest Fr. Nicholas Sheehy, Clogheen | Gallahue, John | Article in Book | | 2004 |
| The pattern day | MacMahon, Bryan | Article in Book | | 2012 |
| The pattern of Mullinakill | Murphy, William | Article in Journal | | 1970 |
| The patterns of Kilmakilloge | Lyne, G. J. | Article in Journal | | 1989 |
| The peace mission of Archbishop Clune | Hopkinson, Michael | Article in Book | | 2008 |
| The peak of Marianism in Ireland, 1930-60 | Donnelly, James S., Jr | Article in Book | | 2000 |
| The Peep O' Day Boys and Defenders in the County Armagh | McEvoy, Brendan | Article in Journal | | 1987 |
| The penal laws | Connolly, Sean J. | Article in Book | | 1990 |
| The penal laws : origins, purpose, enforcement and impact | McGrath, Charles Ivar | Article in Book | | 2021 |
| The penal laws against Irish Catholics : were they too good for them? | Bartlett, Thomas | Article in Book | | 2013 |
| The Penal laws against religion in county Clare in the eighteenth century | Murphy, Ignatius | Article in Journal | | 1983 |
| The penal laws and Irish folk tradition | Danaher, Kevin, 1913-2002 | Article in Journal | | 1962 |
| The penal laws and Irish land | Arkins, T. | Article in Journal | | 1912 |
| The penal laws in county Clare, 1677-1685 | Howard, Leonard | Article in Journal | | 1970 |
| The penal laws in Limerick, 1670-84 | Howard, Leonard | Article in Journal | | 1969 |
| The people's primate : a memoir of Joseph Cardinal MacRory | Murphy, J. J. | Monograph or Collective Volume | Priory P. | 1946 |
| The persecuted primate | Ó Meachair, Liam S. | Article in Journal | | 1957 |
| The personal, marriage and baptismal register of the Reverend Michael Thomas Merritt, Catholic curate, Dublin, 1800-1805 | | Article in Journal | | 1940 |
| The personality of Mary Aikenhead | O'Carroll, Michael | Article in Journal | | 1958 |
| The personnel of the Catholic convention, 1792-3 | Woods, C. J. (Christopher John) | Article in Journal | | 2003 |
| The Petrine claims of Rome | Oulton, J. E. L. | Monograph or Collective Volume | John T Drought | c. 1930 |
| The Phoenix conspiracy (contd.) | Ó Broin, León, 1902-1990 | Article in Journal | | 1980 |
| The pioneers | Dunne, John J. | Monograph or Collective Volume | Pioneer Total Abstinence Association | 1981 |
| The place of Daniel O'Connell in the liberal Catholic movement of the nineteenth century | Conzemius, Victor | Article in Book | | 1980 |
| The planter and the Gael : cultural dimensions of the Northern Ireland problem | Buchanan, R. H. (Ronald Hull) | Article in Book | | 1982 |
| The plenary synod of Thurles | Ahern, John | Article in Journal | | 1951 |
| The poetry of Canon Anthony Fahy O.P. (1805-71) | Fahy, Anthony, O.P., 1805-1871 | Article in Journal | | 2012 |
| The political background to the establishment of Maynooth College | O'Connell, Maurice R. | Article in Journal | | 1956 |
| The political behavior of the English Catholics, 1850-67 | Altholz, Josef Lewis, 1933- | Article in Journal | | 1964 |
| The political involvement of the Catholic clergy in Ireland, 1922-1937 | Murray, Patrick | Thesis | | 1997 |
| The political scene in Northern Ireland, 1926-1937 | McCracken, J. L. | Article in Book | | 1967 |
| The politician - a reassessment | McMahon, Deirdre | Article in Journal | | 1998 |
| The politicization of the Irish Catholic bishops, 1800-1850 | MacDonagh, Oliver | Article in Journal | | 1975 |
| The politics of a divided society | Beaumont, Joan | Article in Book | | 1995 |
| The politics of antagonism : understanding Northern Ireland | McGarry, JohnO'Leary, Brendan | Monograph or Collective Volume | Athlone Press | 1993 |
| The politics of Cardinal McCabe, archbishop of Dublin, 1879-85 | Woods, C. J. (Christopher John) | Article in Journal | | 1973 |
| The politics of clerical radicalism in the 1790s | Cullen, L. M. (Louis Michael) | Article in Book | | 1997 |
| The politics of Paul Cullen | Delaney, John Francis Pius | Thesis | | 1984 |
| The politics of the "Protestant Ascendancy" : County Galway 1650-1832 | Kelly, James, 1959- | Article in Book | | 1996 |
| The poor belong to us : Catholic charities and American welfare | Brown, Dorothy M.McKeown, Elizabeth | Monograph or Collective Volume | Harvard University Press | 1997 |
| The Poor Clare Order of nuns in Ireland | Ó Cuilinn, Peadar C. (Cullen, Peadar C.) | Article in Journal | | 2015 |
| The Poor Sisters of Nazareth and Derry : 1892-1992 | Canning, B. J. (Bernard J.) | Monograph or Collective Volume | John Burns | 1992 |
| The Pope's children, génération lyrique. The decline of Catholic practices in Ireland's Celtic Tiger and Quebec's Révolution tranquille | Matte, Isabelle | Article in Journal | | 2007 |
| The Pope's green island | Ryan, William | Monograph or Collective Volume | Nisbet | 1912 |
| The Pope's Irish Battalion, 1860 | Doyle, Robert | Article in Journal | | 2010 |
| The Pope's man in Ireland : the mission of Nuncio Rinuccini 1645-1649 | Ó Conluain, Proinsias | Article in Journal | | 1995 |
| The pope, the prelate, the soldiers and the controversy : Paul Cullen and the Irish Papal Brigade | O'Connor, Anne | Article in Book | | 2011 |
| The pope, the Protestants, and the Irish : papal aggression and anti-Catholicism in mid nineteenth-century England | Klaus, R. J. | Monograph or Collective Volume | | 1987 |
| The pope’s man in London: Anglo-Vatican relations, the nuncio question and Irish concerns, 1938-82 | Ó Corráin, Daithí | Article in Journal | | 2020 |
| The population of Dublin in the eighteenth century with particular reference to the proportions of Protestants and Catholics | Fagan, Patrick, 1922-2011 | Article in Journal | | 1991 |
| The port of tears : the life of Father John Sullivan, S. J. | Bodkin, Mathias | Monograph or Collective Volume | Burns & Oates | 1954 |
| The post-Reformation bishops of Kerry | O'Ryan, J. C. | Article in Journal | | 1997 |
| The post-Reformation Catholic bishops of Kilfenora | Coen, Martin | Article in Journal | | 1969 |
| The Power boy from Eyon | Ryan, Christopher | Article in Journal | | 1995 |
| The practice of religious controversy in Dublin, 1600-1641 | Gaffney, Declan | Article in Book | | 1989 |
| The prayers before Mass on Sundays and holidays in Ireland | Brady, John, d.1963 | Article in Journal | | 1947 |
| The Preacher and the Prelate: The Achill Mission Colony and the battle for souls in Famine Ireland | Byrne, Patricia | Monograph or Collective Volume | Merrion Press | 2018 |
| The presbyterian synod and catholic emancipation, 1825-9 | Gallagher, J.R. | Thesis | | 1970 |
| The preservation and management of the archives of the Roman Catholic church in Ireland, 1850-2005 | Cosgrave, MarianneSheehy, David C. | Article in Book | | 2006 |
| The price of a wife? the priest and the divorce trial | Cunningham, Anne E. | Monograph or Collective Volume | Anchor Books Australia | 2013 |
| The price of freedom : Edmund Rice, educational leader | McLaughlin, Denis | Monograph or Collective Volume | David Lovell Publishing, in association with The Trustees of the Christian Brothers (Queensland) | 2007 |
| The priest and the Mass in Irish place-names | Mac Aodha, Breandán S. | Article in Journal | | 1992 |
| The priest in politics | Flannery, Austin | Article in Book | | 2000 |
| The priest in the Gaelic folklore of Nova Scotia | Wilsen, Kenneth E. | Article in Journal | | 1996 |
| The priesthood of St Oliver | Ó Fiaich, Tomás | Article in Journal | | 1975 |
| The priests of Knockcroghery, St Johns and Rahara | Feeley, Donald | Article in Journal | | 2005 |
| The priests of the diocese of Limerick, 1878-1917 | Tobin, Matthew | Thesis | | 2006 |
| The priests of the parish of Muckalee | Carrigan, William, 1860–1924 | Article in Journal | | 1883 |
| The priests of the parish of St. John's, Kilkenny | Carrigan, William, 1860–1924 | Article in Journal | | 1883 |
| The priests of the parish of St. Patrick's, Kilkenny | Carrigan, William, 1860–1924 | Article in Journal | | 1883 |
| The priory and parish of Killeigh | Comerford, M., P.P. | Article in Journal | | 1883 |
| The private estate of James II | Kingston, John | Article in Journal | | 1960 |
| The problem of religious dissent in Ireland, 1660-1740 | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Journal | | 1945 |
| The Protestant ascendancy in Ireland from the American revolution to the Act of Union, 1776-1801 | Asch, Ronald G. | Article in Book | | 1993 |
| The Protestant Association and the anti-Maynooth agitation of 1845 | Cahill, G. A. | Article in Journal | | 1957 |
| The protestant crusade in Ireland, 1800-70 : a study of protestant-catholic relations between the Act of Union and Disestablishment | Bowen, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1978 |
| The Protestant crusade, 1800-1860 | Billington, R. A. | Monograph or Collective Volume | [s.n.] | 1938 |
| The Protestant response to repeal : the case of the Dublin working class | Hill, Jacqueline R. | Article in Book | Clarendon Press | 1980 |
| The protestants and catholic emancipation | Day, John P. | Thesis | | 1973 |
| The publisher James Moore and his Dublin edition of the "Encyclopedia Britannica": a notable eighteenth-century publication | Kafker, Frank A.Loveland, Jeff | Article in Journal | | 2011 |
| The pure stream : the story of St Canice's parish church, Finglas | Robinson, Theo | Monograph or Collective Volume | Theo Robinson | 1993 |
| The purpose of Cardinal Ó Fiaich | Faul, Denis | Article in Journal | | 1991 |
| The quarantine of Archbishop Mannix : a British preventive policy during the Anglo-Irish troubles | Hachey, Thomas E. | Article in Journal | | 1970 |
| The quarrel among the Roman Catholic hierarchy over the national system of education in Ireland, 1838-41 | Larkin, Emmet | Article in Book | | 1964 |
| The queen of Ireland | Concannon, Helena | Article in Journal | | 1940 |
| The queen of Ireland : an historical account of Ireland's devotion to the Blessed Virgin | Concannon, Helena | Monograph or Collective Volume | Gill | 1938 |
| The Queen of the Hearth | Dinneen, Patrick Stephen, 1860-1934 | Monograph or Collective Volume | University College Dublin Press | 2013 |
| The quiet leader : the episcopacy of John Cardinal D'Alton, 1946-63 | Ó Corráin, Daithí | Article in Journal | | 2006 |
| The quiet tragedy of Canon Sheehan | Garvin, Tom | Article in Journal | | 2009 |
| The radical face of Paul Cardinal Cullen | Corish, Patrick J. | Article in Book | | 1985 |
| The Raphoe marriage registers : some eighteenth century Catholic marriages in the Protestant registers of the diocese of Raphoe | MacDonagh, J. C. T. | Article in Journal | | 1960 |
| The rationale of Catholic education | Loughran, Gemma | Article in Book | | 1987 |
| The re-energising of Catholicism, 1790–1880 | Barr, Colin | Article in Book | | 2018 |
| The re-establishment of Tuam C.B.S. | Waldron, John J. | Article in Book | | 1997 |
| The real archbishop Mannix from the sources | | Monograph or Collective Volume | Connor Court | 2015 |
| The rebel priests of Mullagh - Fr Pat Gaynor, Fr Michael McKenna and the War of Independence | Hensey, Aine | Article in Journal | | 2021 |
| The reception of My Lord of Ormonde at Kilkenny upon the first peace 1646 | Fletcher, Alan J. | Article in Journal | | 2003 |
| The rector and students of the Irish College at Alcalá de Henares, Spain 1649-1785 | O Connell, Patricia | Article in Journal | | 1997 |
| The rector who wouldn't pray for rain | Semple, Patrick | Monograph or Collective Volume | Mercier Press | 2007 |
| The rectors and students of the Irish College at Alcalá de Henares, Spain 1649-1785 | O Connell, Patricia | Article in Journal | | 1996 |
| The recusancy revolt of 1603 : a reinterpretation | Sheehan, A. J. (Anthony J.) | Article in Journal | | 1983 |
| The Redemptorists in Ireland, 1851-2011 | McConvery, Brendan | Monograph or Collective Volume | Columba | 2012 |
| The Redingtons of Clarinbridge : leading Catholic landlords in the 19th century | Murphy, Joseph | Monograph or Collective Volume | [Joseph Murphy] | 1999 |
| The redoubtable John Hennessy, first archbishop of Dubuque | Coogan, M. Jane | Article in Journal | | 1980 |
| The Reformation in Dublin, 1536-1558 (from original sources) | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Longmans, Green | 1926 |
| The Reformation in Ireland under Elizabeth, 1558-1580 (from original sources) | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Longmans, Green | 1930 |
| The Reformation in Ireland: interpretations old and new | Jefferies, Henry A. | Article in Journal | | 2016 |
| The reformation of Philadelphia catholicism, 1830-1860 | Light, D. | Article in Journal | | 1988 |
| The Reformation, Catholicism and religious change in Co Kildare, 1560-1640 | Cox, Jeffrey | Thesis | | 2016 |
| The regiment of MacElligott 1688-89 | Garland, J. L. | Article in Journal | | 1950 |
| The regiment of Walter Bourke | Murtagh, Diarmuid | Article in Journal | | 1949 |
| The Regional Impact of Irish Catholicism 1700-1850 | Whelan, Kevin | Article in Book | | 1988 |
| The registration of the clergy in 1704 | Ó Fiaich, Tomás | Article in Journal | | 1971 |
| The regular clergy and the episcopate in Ireland, 1600-1650 | Ó hAnnracháin, Tadhg | Article in Book | NA | 2022 |
| The regulars in the post-reformation period | O'Connell, W. D. | Article in Journal | | 1943 |
| The relations between Church and State in the age of emancipation | Nowlan, Kevin B. | Article in Journal | | 1961 |
| The relations between the Irish catholics and the government from the treaty of Limerick (1691) to the abandonment of the Stuarts by the catholic clergy (1702) | O'Dowd, Thomas D., Rev. | Thesis | | 1945 |
| The relationship between Civil and Catholic parishes | Hickey, Nora | Article in Journal | | 1987 |
| The religious condition of Ireland, 1770-1850 | Yates, Nigel | Monograph or Collective Volume | Oxford University Press | 2006 |
| The religious condition of Ireland, 1770-1850 | Yates, Nigel | Monograph or Collective Volume | Oxford University Press | 2006 |
| The religious context of the women's suffrage campaign in Ireland | Murphy, Cliona | Article in Journal | | 1997 |
| The religious development of Daniel O'Connell, I : from Deist to Roman Catholic | Guilfoyle, James E. | Article in Journal | | 1998 |
| The religious development of Daniel O'Connell, II : the making of a devotional Catholic | Guilfoyle, James E. | Article in Journal | | 1998 |
| The religious difficulty under home rule : 1, the nonconformist view | Prenter, Samuel | Article in Book | | 1912 |
| The Religious Factor in the 1798 Rebellion in Wexford | Whelan, Kevin | Article in Book | | 1987 |
| The religious life of the Catholic laity of Dublin, 1920-40 | Hartigan, Maurice | Article in Book | | 2000 |
| The religious mission of the Irish people and Catholic colonization | Spalding, John Lancaster | Monograph or Collective Volume | Arno P. | 1978 |
| The religious question in Ireland | Hammond, Thomas C. | Article in Journal | | 1913 |
| The religious sisters and brothers of the diocese of Kilmore | Smith, Gerald | Monograph or Collective Volume | Cumann Seanchais Bhre´ifne | 2010 |
| The Remaking of Irish-America, 1845-1880 | Doyle, David Noel | Article in Book | | 2006 |
| The remarkable Luke Cullen O.D.C., (1793-1859) | Scannell, James | Article in Journal | | 1999 |
| The remonstrance of December 1661 and Catholic politics in restoration Ireland | Creighton, Anne | Article in Journal | | 2004 |
| The remonstrance of Irish princes, 1317 | Scully, Diarmuid | Article in Journal | | 2013 |
| The renewal of Catholic religious culture in eighteenth-century Dublin | Begadon, Cormac | Article in Book | | 2011 |
| The reorganisation of the Irish church, 1603-41 | Corish, Patrick J. | Article in Journal | | 1957 |
| The resident church : middle class catholics and the shaping of American catholic identity, 1889-1899 | Robichaud, Paul G. | Monograph or Collective Volume | University of California Press | 1989 |
| The response of the Roman Catholic Church to the introduction of vocational education in Ireland, 1930-1942 | Clark, Mary | Article in Journal | | 2012 |
| The Restoration and the Jacobite War (1660-91) | Simms, J. G. (John Gerald) | Article in Book | | 1967 |
| The Retraction of Peter Walsh, OFM, 1688 | Fennessy, Ignatius | Article in Journal | | 1992 |
| The Reverend John McKenna, Loyalist Chaplain | Kelly, Edward | Article in Journal | | 1933 |
| The revival of plainchant in the Roman Catholic church in Ireland, 1777-1858 : some sources and their commerce with England | Zon, Bennett M. | Article in Book | | 1996 |
| The revival of the anti-Maynooth campaign in Britain, 1850-1852 | Wallis, Frank | Article in Journal | | 1987 |
| The rhetoric of religious innovation : perceptions and reactions to the Catholic charismatic renewal in Ireland | Szuchewycz, B. G. | Article in Journal | | 1993 |
| The right of patronage of the Maguires of Tempo | Faulkner, Anselm | Article in Journal | | 1977 |
| The Right Reverend James Magaurin, D.D. Titular Bishop of the Diocese of Ardagh examined at The Select Committee appointed to enquire into The State of Ireland, 1825 | O'Hara, Aidan | Article in Journal | | 2008 |
| The rise and fall of the Irish Franciscan monasteries | Meehan, C. P. | Monograph or Collective Volume | | 1869 |
| The rise in sectarianism in 1820s Ireland | Moffitt, Miriam | Article in Book | | 2013 |
| The rise of recusancy among the Dublin patricians, 1580-1613 | Lennon, Colm | Article in Book | | 1989 |
| The rise of the Catholic middle class : O'Connellites in County Longford, 1820-50 | O'Ferrall, Fergus | Article in Book | | 2010 |
| The rise of the Rainbow Chasers: Advanced Irish political nationalism in Britain 1916-22 | Gannon, Darragh | Article in Journal | | 2014 |
| The rising of 1641 and the Catholic confederacy, 1641-5 | Corish, Patrick J. | Article in Book | | 1976 |
| The role and influence of the Irish Missions of the Society of Jesus in the implementation of a Counter Reformation among the Old English in Ireland, 1542-1633 | Jackson, Brian | Thesis | | 2008 |
| The role of Ne Temere in the decline of an Irish custom regarding the religious affiliation of the children of mixed marriages | Buck, Jesse | Article in Journal | | 2011 |
| The Role of the Catholic Priest in the 1798 Rebellion in County Wexford | Whelan, Kevin | Article in Book | | 1987 |
| The role of the Roman Catholic and Church of Ireland in the distribution of relief during the 1822 famine in County Roscommon | Casey, Brian | Article in Book | NA | 2018 |
| The role of Vincentian parish missions in the 'Irish counter-reformation' of the mid nineteenth century | Murphy, James H. | Article in Journal | | 1984 |
| The role of women and religion in the 1916 Rising | Murphy, Sandra | Article in Journal | | 2015 |
| The Roman Catholic chapel in Drumbanaway | Harkness, Dick | Article in Journal | | 1994 |
| The Roman Catholic Church and economic growth in nineteenth-century Ireland | Kennedy, Liam, 1946- | Article in Journal | | 1978 |
| The Roman Catholic Church and the emergence of the modern Irish political system, 1874-1878 | Larkin, Emmet | Monograph or Collective Volume | Four Courts | 1996 |
| The Roman Catholic church and the Home Rule movement in Ireland, 1870-1874 | Larkin, Emmet | Monograph or Collective Volume | University of North Carolina Press | 1990 |
| The Roman Catholic Church and the Irish Civil War | Murray, Patrick | Article in Journal | | 2015 |
| The Roman Catholic Church and the Irish poor | Samuel, Raphael Elkan, 1934-1996 | Article in Book | | 1985 |
| The Roman Catholic Church and the Nineteenth Century Irish Diaspora | Gilley, Sheridan | Article in Journal | | 1984 |
| The Roman Catholic Church and the Plan of Campaign in Ireland, 1886-1888 | Larkin, Emmet | Monograph or Collective Volume | Cork University Press | 1978 |
| The Roman Catholic Church in Ireland 1800-1922 : A survey of recent historiography | Silke, John J. | Article in Journal | | 1975 |
| The Roman Catholic church in Ireland : 1898-1918 | Miller, David William, 1940- | Article in Journal | | 1968 |
| The Roman Catholic Church in Ireland and Sir Robert Peel's administration 1841-1846 | Kerr, Donal A. | Thesis | | |
| The Roman Catholic church in Ireland and the fall of Parnell | Larkin, Emmet | Monograph or Collective Volume | University of North Carolina Press | 1979 |
| The Roman Catholic church in Ireland and the fall of Parnell | Larkin, Emmet | Monograph or Collective Volume | Liverpool University Press | 1979 |
| The Roman Catholic church in Ireland, 1898-1918 | Miller, David William, 1940- | Article in Book | | 1987 |
| The Roman Catholic church, the state and Al Smith | Smylie, James H. | Article in Journal | | 1960 |
| The Roman Catholic ethos of Irish secondary schools, 1924-62, and its implications for teaching and school organisation | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1990 |
| The Roman Catholic hierarchy and the fall of Parnell | Larkin, Emmet | Article in Journal | | 1961 |
| The Roman Catholic mission to the Irish in London | Gilley, Sheridan | Article in Journal | | 1969 |
| The Roman Catholic Mission to the Irish in London, 1840-60 | Gilley, Sheridan | Article in Journal | | 1969 |
| The Roman Catholic parish registers of Wexford town from c.1672 : some considerations of their significance and use in historical research | Rafferty, Celestine | Article in Journal | | 1994 |
| The Roman Catholic peerage and the Crown in late seventeenth-century Ireland | Ellwood, Mark Richard | Thesis | | 2012 |
| The Roman mould of the Australian Catholic church | Molony, John N. | Monograph or Collective Volume | Melbourne University Press | 1969 |
| The roots of violence : Catholic grievances and Irish nationalism during the civil rights period | Hewitt, Christopher | Article in Book | | 1991 |
| The Rothe collection: a legacy of the Counter-Reformation in Ireland | Morgan, Hiram | Article in Journal | | 2013 |
| The round tower 'evil eye' and holy well at Balla, Co. Mayo | Rynne, Etienne | Article in Book | | 1998 |
| The Roundwood Healyites, an unseemly row in the Chapel yard | 'The Glendalough Goose' | Article in Journal | | 1997 |
| The sacred in the secular : religious change in Catholic Ireland, 1500-1700 : the fifth annual lecture in Catholic studies, sponsored by the Edmundite trust fund for Catholic Studies and Ministry at St. Michael's College, 21 April 1993 | Gillespie, Raymond, 1955-2024 | Monograph or Collective Volume | St Michael's College | 1993 |
| The sad tale of Michael Welsh (the reluctant Ribbonman) | Kerrigan, John | Article in Journal | | 1990 |
| The saints and martyrs of Ireland | Montagne, H. Patrick | Monograph or Collective Volume | Smythe | 1981 |
| The Salamanca archives | Richardson, Regina Whelan | Article in Book | | 1995 |
| The Salamanca letters : a catalogue of correspondence (1619-1871) from the Archives of the Irish colleges in Spain in the library of St. Patrick's College, Maynooth, Ireland = Las cartas salmantinas : un catalogo de correspondencia (1619-1871) de los colegios irlandeses in Espana en la biblioteca del colegio de San Patricio, Maynooth, Irlanda | | Monograph or Collective Volume | St. Patrick's College | 1995 |
| The schools cultural studies project : a contribution to peace | Robinson, Alan | Monograph or Collective Volume | [s.n.] | 1981 |
| The Scottish response to the 1641 rebellionin Connacht : the case of Sir Frederick Hamilton | Duignan, Aoife | Article in Book | | 2016 |
| The Scullys of Kilfeacle : Catholic middlemen of the 1770s | O'Donoghue, James, d. 2004 | Article in Journal | | 1989 |
| The sea apostolate in Ireland | Anson, Peter F. | Monograph or Collective Volume | Irish Messenger Publications | 1946 |
| The search for missing friends - volume 1 : 1831-1850 | Ahern, Dennis J. | Article in Journal | | 1998 |
| The search for the Celtic rite : the TCD Sarum divine office MSS reassessed | Brannon, Patrick | Article in Book | | 1993 |
| The second burial of Bishop Shanahan | Forristal, Desmond | Monograph or Collective Volume | Veritas | 1990 |
| The Second Reformation in west Galway: Alexander R. Dallas and the Society for Irish Church Missions to the Roman Catholics, 1849-1859 | Majerus, Pascal André | Thesis | | 1991 |
| The secular and the radical in Irish associational culture of mid-Victorian Glasgow | McBride, Terence | Article in Journal | | 2010 |
| The secular clergy of the archdiocese of Armagh, 1518-58 | Jefferies, Henry Allen | Thesis | | 1996 |
| The secular priests of the diocese of Ferns : lists of priests who served in each parish, with short biographical notes | Gahan, John | Monograph or Collective Volume | Editions de Signe | 2000 |
| The selection of the American Catholic hierarchy, 1789-1851 | Manfra, Jo Ann | Article in Journal | | 1990 |
| The service of Roman Catholics in the British Army 1750 to 1830 | Fontana, V. J. L. | Article in Journal | | 2006 |
| The seventeenth century | Millett, Benignus | Article in Book | | 1991 |
| The shaping of Sunday : Sunday and Eucharist in the Irish tradition | Ryan, Vincent | Monograph or Collective Volume | Veritas | 1997 |
| The siege of Derry | Macrory, Patrick | Monograph or Collective Volume | | 1988 |
| The siege of Derry in Ulster protestant mythology | McBride, Ian | Monograph or Collective Volume | Four Courts | 1997 |
| The siege of Derry, 1689 | McCartney, Peter | Monograph or Collective Volume | Guildhall Press | 1988 |
| The siege of Golden Castle, James Butler of Boytonrath, captain in the Confederate Catholic army, 1642-53 | Butler, Toby | Article in Journal | | 1994 |
| The siege of Paris seen from Collège des Irlandais by Canon Ouin-la-Croix | | Article in Book | | 1978 |
| The sins of our fathers : roots of conflict in Northern Ireland | Edwards, Owen Dudley | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Sisters of Crossmolina | Anonymous | Article in Journal | | 1990 |
| The Sisters of Mercy Ennis | O'Brien, Pius | Monograph or Collective Volume | Congregation of the Sisters of Mercy | 1992 |
| The Sisters of Mercy of Birr and Nenagh | O'Brien, Sister Pius | Monograph or Collective Volume | Congregation of the Sisters of Mercy, Killaloe Mercy Generalate | 1994 |
| The Sisters of Mercy of Kilrush and Kilkee | O'Brien, Pius | Monograph or Collective Volume | Congregation of the Sisters of Mercy | 1997 |
| The situational dimension of the educational apostolate and the configuration of the learner as a cultural and political subject : the case of Our Lady of the Missions in the Canadian prairies | Bruno-Jofré, Rosa | Article in Book | | 2016 |
| The sixteenth century | Lennon, Colm | Article in Book | | 1991 |
| The social and cultural background of a Counter-Reformation episcopate 1618-60 | Cregan, Donal F. | Article in Book | | 1979 |
| The social composition of the Catholic convention, 1792-3 | Woods, C. J. (Christopher John) | Article in Book | | 2003 |
| The social composition of the senior officers of the Royal Irish Constabulery, 1881-1911 | Campbell, Fergus | Article in Journal | | 2009 |
| The social teaching of the Catholic Church : to what purpose? to what effect? | O'Shea, Eamon | Article in Journal | | 1990 |
| The socializationof uncertainty : the Ancient Order of Hibernians in Butte, Montana 1880-1925 | Emmons, David M. | Article in Journal | | 1994 |
| The Society of Jesus in Ireland, Scotland, and England, 1598–1606: “Lest Our Lamp be Entirely Extinguished” | McCoog, Thomas M. | Monograph or Collective Volume | BRILL|Institutum Historicum Societatis Iesu | 2017 |
| The Society of Jesus of Ireland, Scotland, and England 1541-1588 : 'our way of proceeding?' | McCoog, Thomas M. | Monograph or Collective Volume | Brill | 1996 |
| The Society of St Patrick for Foreign Missions | Moynagh, J. | Article in Journal | | 1944 |
| The Society of St Vincent de Paul in Carlow | O'Neill, Pat | Article in Journal | | 2011 |
| The Society of St Vincent de Paul in Dublin, 1926-1975 | Ní Chearbhaill, Máire | Thesis | | 2008 |
| The Society of St Vincent de Paul in Ireland : 170 years of fighting poverty | | Monograph or Collective Volume | New Island | 2014 |
| The Society of St Vincent de Paul in Ireland, 1845-1945 | Dillon, T. | Article in Journal | | 1945 |
| The Society of the Sacred Heart ... 1875 | Finlay, John | Article in Journal | | 2020 |
| The society of the Sacred Heart in Armagh, 1851-9 | Kilroy, Phil | Article in Journal | | 1979 |
| The sodality of Our Lady in Ireland in the nineteenth century | O'Conor, Charles | Article in Journal | | 1945 |
| The sources of Trí Bior-Ghaoithe an Bháis : another French sermon | Cunningham, Bernadette | Article in Journal | | 1999 |
| The Spanish Court, Ecclesiastical Patronage, and the Irish College of Santiago de Compostela (1611–17) | O’Scea, Ciaran | Article in Book | | 2018 |
| The Spanish monarchy and Irish mercenaries : the wild geese in Spain 1618-68 | Stradling, R. A. | Monograph or Collective Volume | Irish Academic Press | 1994 |
| The Spanish-language 'Manifesto' of the Catholic Confederation of Ireland, 1642 | Darcy, Eamon | Article in Journal | | 2014 |
| The spirit of Irish sectarianism | Buckley, Anthony D. | Article in Journal | | 1989 |
| The spiritual government of the entire world : a memorial for the Irish College, Rome, January 1783 | Carroll, Clare | Article in Book | | 2008 |
| The splendid cause : the Catholic action movement in Ireland in the twentieth century | Curtis, Maurice | Monograph or Collective Volume | Original Writing | 2008 |
| The splendid cause : the Missionary Society of St. Columban, 1916-1954 | Collins, Neil, 1938- | Monograph or Collective Volume | Columba | 2009 |
| The St Louis Catholic press and political issues, 1845-61 | Cross, Jasper W. | Article in Journal | | 1969 |
| The St. Louis Irish : an unmatched Celtic community | Faherty, William Barnaby | Monograph or Collective Volume | Missouri Historical Society Press | 2001 |
| The state of religion in the province of Leinster during the 17th century, illustrated by extracts from synodical decrees | Comerford, M., P.P. | Article in Journal | | 1879 |
| The Stations | Collins, Kit | Article in Journal | | 2007 |
| The Stations | Cadogan, Anne | Article in Journal | | 2001 |
| The stations, part 1 | Quain, James T. | Article in Journal | | 1990 |
| The stations, part 2 | Quain, James T. | Article in Journal | | 1991 |
| The statue on the hill | Anonymous | Article in Journal | | 1998 |
| The Statutes of the Irish college, Toulouse, 'le séminaire royal de Sainte Anne' | Ferté, Patrick | Article in Journal | | 2010 |
| The Stepinic file | Agee, Chris | Article in Book | | 2003 |
| The Stockdales of Ballynarry | Crea, Willie | Article in Journal | | 2002 |
| The Stockport riots of 1852 : a study of anti-Catholic and anti-Irish sentiment | Millward, Pauline | Article in Book | | 1985 |
| The story of Benada | Butler, Katherine | Monograph or Collective Volume | Sisters of Charity | 1983 |
| The story of Lieutenant Robert Stanton, 6th battalion The Royal Dublin Fusiliers | Burke, Tom | Article in Journal | | 1997 |
| The story of Matt Talbot | Carroll, Malachy Gerard | Monograph or Collective Volume | Mercier Press | 1948 |
| The story of Mercy in Derry | Bolster, Angela | Article in Book | | 2000 |
| The story of the Canon Sheehan monument at Doneraile | O'Connor, J. J. | Article in Journal | | 1946 |
| The story of the Loreto convent in Coleraine | Coyle, Madeleine | Article in Journal | | 2005 |
| The story of the native Irish sisters who entered the Congregation of the Sisters, Servants of the Immaculate Heart of Mary Scranton, Pennsylvania | Keenan, M. Michel | Monograph or Collective Volume | Congregation of the Sisters, Servants of the Immaculate Heart of Mary Scranton, Pennsylvania | 2006 |
| The story of the Vincentians. a record of the achievements in Ireland and Britain of the priests and lay-brothers of the congregation of the mission founded by St Vincent de Paul | Purcell, Mary | Monograph or Collective Volume | All Hallows College | 1973 |
| The strange case of Colonel Robert Byrne, 1667 | Meagher, John | Article in Journal | | 1960 |
| The structure of voter preferences : the 1921, 1925, 1973 and 1975 Northern Irish parliamentary elections | Dutter, Lee E. | Article in Journal | | 1982 |
| The struggle for Catholic emancipation in county Longford 1824-9 | O'Ferrall, Fergus | Article in Journal | | 1978 |
| The Stuart nomination of Irish bishops, 1687-1765 | Giblin, Cathaldus | Article in Journal | | 1965 |
| The succession of parish priests in the archdiocese of Dublin, 1771-1851 | O'Riordan, W. M. | Article in Journal | | 1956 |
| The support of Connacht's Catholic hierarchy for the Legislative Union of Great Britain and Ireland, 1800 | Hogan, Patrick | Article in Journal | | 2006 |
| The support of the Catholic clergy in Ireland, 1750-1850 | Murphy, John A. | Article in Book | | 1965 |
| The suppression and restoration of the Society of Jesus in Ireland | Savage, Roland | Article in Journal | | 1942 |
| The survival of the Catholic Church in Ulster in the era of the flight of the earls and the Ulster plantation | Ó hAnnracháin, Tadhg | Article in Book | | 2010 |
| The Sword and the Prayerbook : Ideals of Authentic Irish Manliness | Nugent, Joseph | Article in Journal | | 2008 |
| The synod of Thurles, 1850 : discipline and education | Doherty, Gillian M.,O'Riordan, Tomás | Article in Book | | 2011 |
| The Synod of Thurles, 1850 : documents | MacCarthy, John Paul,O'Riordan, Tomás | Article in Book | | 2011 |
| The Talbots and Carton House in the seventeenth century | Byrne, Joseph | Article in Journal | | 2013 |
| The Taylors of Swords | Marks, Bernadette | Article in Book | | 1998 |
| The testament of Mary : the Irish account of the death of the Virgin | Willard, Rudolph | Article in Journal | | 1937 |
| The Theatre Royal bottle riot of 1822 and the Orange Order in Dublin | O'Reilly, Hugh | Article in Journal | | 2019 |
| The theft of the relic of Holy Cross Abbey | Fennessy, Ignatius | Article in Journal | | 2000 |
| The theology and liturgy of conversion from Catholicism to Anglicanism | Power, Thomas P. | Article in Book | | 2005 |
| The Thoresby Miscellany, 16 | Anonymous | Monograph or Collective Volume | | 1974 |
| The three lives of Gavan Duffy | Pearl, C. | Monograph or Collective Volume | O'Brien Press|New South Wales University Press | 1979 |
| The Tilson case : church and state in 1950s Ireland | Jameson, David | Monograph or Collective Volume | Cork University Press | 2023 |
| The times and life of Nicholas Sweetman, Bishop of Ferns, (1744-86) | Furlong, Nicholas | Article in Journal | | 1983 |
| The Tirry documents in the Archives de France, Paris | | Article in Journal | | 1957 |
| The Tirry documents in the Augustinian General Archives | Hackett, M. B. | Article in Journal | | 1957 |
| The tomb of Miler Magrath. The monument and the message | Ryan, Patrick J. | Article in Journal | | 2020 |
| The tragedy of belief : division, politics, and religion in Ireland | Fulton, John | Monograph or Collective Volume | Clarendon Press | 1991 |
| The transcendent role of Catholic discourse in the Irish Land War | Kane, Anne | Article in Book | | 2013 |
| The transformation of the Irish College, Paris: war, education, and administration, 1870–1918 | Stover, Justin Dolan | Article in Book | | 2018 |
| The transformation of the Society of United Irishmen into a mass-based revolutionary organisation, 1794-6 | Curtin, Nancy J. | Article in Journal | | 1985 |
| The Travails of Contemporary Irish Catholicism from John Paul II to Pope Francis | Ó Corráin, Donnchadh | Article in Book | Oxford University Press | 2023 |
| The Treaty of Limerick | Simms, J. G. (John Gerald) | Monograph or Collective Volume | Dundalgan Press | 1961 |
| The trial of Oliver Plunkett | Curtayne, Alice | Monograph or Collective Volume | Sheed & Ward | 1953 |
| The trial of Oliver Plunkett | Curtayne, Alice | Article in Journal | | 1954 |
| The trials and tribulations of Fr John Quinn (1827-88), Middletown | Gilmore, Brian | Article in Journal | | 2012 |
| The tribes at Louvain : Francis Martin, S.T.D. | Spelman, J. P. | Article in Journal | | 1886 |
| The Tridentine evolution of modern Irish Catholicism, 1563-1962 : a re-examination of the "devotional revolution" thesis | McGrath, T. G. | Article in Journal | | 1991 |
| The Tridentine evolution of modern Irish Catholocism, 1563-1962 : a re-examination of the 'devotional revolution' thesis | McGrath, Thomas G. | Article in Journal | | 1991 |
| The triumph of the Catholic Committee : the Irish Catholic Campaign, 1790-1793 | Selzer, Eric | Thesis | | |
| The trouble with France: Making Scots priests in France, 1818–78 | Saarinen, Iida | Article in Book | | 2018 |
| The troubled contemporary Irish Catholic church | Donnelly, James S., Jr | Article in Book | | 2002 |
| The truth about Ulster | Moore, Frank Frankfort | Monograph or Collective Volume | Nash | 1914 |
| The Turas (Sts Peter & Paul) | Carr, Kathleen | Article in Journal | | 1994 |
| The twin churches book, Wexford, 1858-2008 | | Monograph or Collective Volume | Carraig Mór House | 2008 |
| The Ulster canal and sectarian strife | Dillon, Charles | Article in Journal | | 1988 |
| The Ulster Catholic | McCullagh, Francis | Article in Journal | | 1914 |
| The Ulster Defence Regiment and the question of Catholic recruitment, 1970-1972 | Ó Faoleán, Gearóid | Article in Journal | | 2015 |
| The Ulster rebellion of 1641 in county Cavan | Corbett, Freyne | Article in Journal | | 2010 |
| The Ulster refuge of the Northern army | Casway, Jerrold | Article in Journal | | 2006 |
| The Ulster rising of 1641 | Bradshaw, Brendan | Article in Book | | 1998 |
| The ultramontane spirituality of Paul Cullen | Rafferty, Oliver P. | Article in Book | | 2011 |
| The undertheorisation of sectarianism | McVeigh, Robbie | Article in Journal | | 1990 |
| The unfortunate Michael Campbell : a study of two Defender documents 1796 | Mac Giolla Choille, Breandán | Article in Journal | | 1998 |
| The union of Navan in 1766 | Gurrin, Brian F. | Article in Journal | | 2003 |
| The United Irishmen in Wexford | Cullen, L. M. (Louis Michael) | Article in Book | | 1996 |
| The United States of America : the Irish clergyman | McAvoy, T. T. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The University question | McGrath, Fergal | Article in Book | | 1968 |
| The unpopular front : Catholic revival and Irish cultural identity, 1932-48 | Riordan, Susannah | Article in Book | | 2000 |
| The Ursulinés in Thurles : the first hundred years, 1787-1887 | Lillis, Mercedes | Article in Book | | 1989 |
| The uses and abuses of censorship : God, Ireland and the battle to extend censorship Post 1929 | Keating, Anthony | Article in Journal | | 2014 |
| The Vatican, the Bishops and Irish Politics 1919-39 | Keogh, Dermot | Monograph or Collective Volume | Cambridge University Press | 1986 |
| The venerable Archdeacon John Begley, V. G. | Anonymous | Article in Journal | | 1942 |
| The Venerable Edel Quinn - the Blackrock connection | Farragher, Sean | Article in Journal | | 2008 |
| The venerable John Joseph Steiner: a German-Irish saint? | Buck, William | Article in Journal | | 2012 |
| The Veto controversy, including Thomas Moore's letter to the Roman Catholics of Dublin | | Monograph or Collective Volume | Athol | 1985 |
| The view from Breóghan's Tower | Cunningham, Bernadette | Article in Book | | 2015 |
| The Village Stations in the 1920s | Grehan, Margaret | Article in Journal | | 2000 |
| The vision of John Carroll | Hennesey, James | Article in Journal | | 1979 |
| The vision of John Carroll | Hennessy, J. | Article in Journal | | 1979 |
| The visits to Ireland of John Hughes, Archbishop of New York from 1840 to 1862 | McKenna, Ellen | Article in Journal | | 2009 |
| The voice of the Virgin : Irish visionaries and their testimony | Eipper, Chris | Article in Book | | 1996 |
| The voices of Catholic women in Ireland, 1800-1921 | Clear, Caitriona | Article in Book | | 2013 |
| The voyage out : Infant Jesus Sisters, Ireland, 1909-2009 | KilBride, CatherineRaftery, Deirdre | Monograph or Collective Volume | IJS Centenary Committee | 2009 |
| The Wadding library of Saint Isidore's College, Rome, 1622-1700 | MacMahon, JosephMcCafferty, John | Article in Journal | | 2013 |
| The Waldron priests | Waldron, Kieran | Article in Journal | | 1996 |
| The waning of the green : Catholics, the Irish, and identity in Toronto, 1887-1922 | McGowan, Mark George | Monograph or Collective Volume | McGill-Queen's University Press | 1999 |
| The war in Ireland, 1689-1691 | Murtagh, Harman | Article in Book | | 1990 |
| The wardenship of Galway | Coen, Martin | Monograph or Collective Volume | Kenny's Bookshop | 1984 |
| The wardenship of Galway in the early-nineteenth century | Coen, Martin, Rev. | Thesis | | 1967 |
| The Wastegrass and its Mass Rock | McQuinn, Christopher P. | Article in Journal | | 2012 |
| The Waterloo priest | Fitzgerald, J. J. | Article in Journal | | 1977 |
| The Waterloo Priest. The Reverend William O'Donnell, formerly Ensign William O'Donnell, XXth (East Devonshire) Regiment of Foot | Doherty, Richard | Article in Journal | | 2017 |
| The way back from Rome | Purcell, Mary | Article in Journal | | 1979 |
| The way we were : life and times on the Cooley peninsula | O'Hanlon, Michael | Monograph or Collective Volume | [Cooley parish, St James in Grange] | 2012 |
| The Wexford Catholic community in the later seventeenth century | Murphy, Celestine | Article in Book | | 1990 |
| The Wexford man : Essays in Honour of Nicky Furlong | | Monograph or Collective Volume | Geography Publications | 2007 |
| The Wexford priests in 1798 | Whelan, Kevin | Article in Book | | 1997 |
| The will and foundation of Rev. Eugene Brady, 1767 | Cunningham, T. P. | Article in Journal | | 1965 |
| The will of Friar Martin, 1842 | Martin, Thomas | Article in Journal | | 1952 |
| The will of James Hussey of Smarmore, Co. Louth, 'priest' (A.D.1635) | Hussey, J.Murray, L. P. | Article in Journal | | 1937 |
| The women in the life of Bishop Daniel Delany | Sweetman, Stephen | Article in Journal | | 2020 |
| The women who leave : Irish women writing on emigration | Nichols, K. Madolyn | Thesis | | |
| The work of the Catholic church in the United States of America | Hobart, JohnPacker, WilliamZaratti, Alfonso | Monograph or Collective Volume | Nardini 'Artistic' Publishing Co. | 1856 |
| The world of Daniel O'Connell | McCartney, Donal | Article in Book | | 1980 |
| The world of Geoffrey Keating : history, myth and religion in seventeenth-century Ireland | Cunningham, Bernadette | Monograph or Collective Volume | Four Courts | 2000 |
| The wrath of God : churches and the experience of violence in Northern Ireland | Morrow, Duncan | Article in Book | | 1991 |
| The writer, Canon Sheehan | Stockley, W. F. P. | Article in Journal | | 1941 |
| The Writings and Speeches of Edmund Burke, 9, pt. 1 : The Revolutionary War, 1794-1797; 9, pt. 2 : Ireland | Burke, Edmund, 1729-1797McDowell, R. B. (Robert Brendan), 1913-2011 | Monograph or Collective Volume | | 1991 |
| The writings of Father Luke Wadding, O.F.M. | Mooney, Canice | Article in Journal | | 1958 |
| The written memory of St Mary's University College, Dublin (1893-1912) : the pioneer college for the higher education of Catholic women in Ireland | Cunningham, John M. | Article in Journal | | 2019 |
| The years in Ireland | McHugh, Roger Joseph | Article in Book | | 1945 |
| The ‘British Establishments’, the Irish college in Paris and Restoration France, 1814–30 | Chambers. Liam | Article in Book | | 2018 |
| The ‘recusancy revolt’ of 1603 revisited, popular politics, and civic Catholicism in early modern Ireland | Walter, John | Article in Journal | | 2022 |
| Theatre and cultural politics in Northern Ireland : the Over the Bridge controversy, 1959 | Pilkington, Lionel | Article in Journal | | 1996 |
| Theobald Mathew, O.F.M.Cap : a centenary tribute | Anonymous | Article in Journal | | 1956 |
| Theobald McKenna and the catholic question | Leighton, Douglas Auld | Thesis | | 1985 |
| Theory in the absence of fact : Irish women and the Catholic Reformation | Ó hAnnracháin, Tadhg | Article in Book | | 2003 |
| These traits also endure : contemporary Irish and Irish-American women writers | Ebest, Sally Barr | Article in Journal | | 2003 |
| Theses defended in St Isidore's College, Rome, 1631-1649 | Jennings, Brendan | Article in Journal | | 1959 |
| Thesis abstract : Catholicism in the Province of Armagh, 1603-1641 | Mac Cuarta, Brian | Article in Journal | | 2005 |
| Thesis abstract : The society for Irish church missions to the Roman Catholics,
1849–1950 | Moffitt, Miriam | Article in Journal | | 2007 |
| They brought the good news : modern Irish missionaries | Keaney, Marian | Monograph or Collective Volume | Veritas | 1980 |
| They hanged him in Youghal : Brother Dominic Collins, Irish Jesuit Brother | Clear, John Bedam | Monograph or Collective Volume | Irish Messenger Publications | 1953 |
| They have fooled you again : Michael O'Flanagan (1876-1942) priest, republican, social critic | Carroll, Denis | Monograph or Collective Volume | Columba | 1993 |
| This sacred feeling : patriotism, nation-building and the Catholic church in Newfoundland, 1850-1914 | Lambert, Carolyn | Article in Book | | 2015 |
| Thomas "Bullocks" Wyse : a Catholic industrialist during the Penal Laws, part 2 | Cowman, Des | Article in Journal | | 1984 |
| Thomas (Bullocks) Wyse : a Catholic industrialist during the Penal Laws. Part 1 | Cowman, Des | Article in Journal | | 1983 |
| Thomas A. Finlay S.J., 1848-1940 : educationalist, editor, social reformer | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2004 |
| Thomas Brehun (1582-1647) and Maurice Brehun (1588-1633) | Hazard, Benjamin | Article in Journal | | 2019 |
| Thomas Carr in Ireland | Boland, T. P. | Article in Journal | | 1991 |
| Thomas Dease, bishop of Meath and some questions concerned with the rights to ecclesiastical property alienated at the reformation | Rice, Gerard | Article in Journal | | 1975 |
| Thomas F. Ryan S.J. From Cork to China and Windsor Castle, 1889-1971 | Morrissey, Thomas J. | Monograph or Collective Volume | Columba Press | 2010 |
| Thomas Hussey, bishop of Waterford and Lismore, 1797-1803, and the rebellion of 1798 | Keogh, Dáire | Article in Book | | 1992 |
| Thomas James Crotty O.P. and his correspondence with Sir Roger Casement | Walsh, Edward | Article in Journal | | 2019 |
| Thomas L. Synnott : the career of a Dublin Catholic 1830-1870 | Cullen, Bob | Monograph or Collective Volume | Irish Academic Press | 1997 |
| Thomas Nugent (1569-1635) and the Irish Capuchins in the counter-reformation, 1591-1641 | Martin, F.X. | Thesis | | 1951 |
| Thomas W. Allies (1813-1903) | Enciclopedia Cattolica | Article in Book | NA | 1948 |
| Thomastown Catholic church (notes on the background and construction) | Walsh, Walter | Article in Journal | | 1996 |
| Thomastown national schools in the nineteenth century : the role of the Roman Catholic clerical manager | Doyle, Joe | Article in Journal | | 2003 |
| Thr Reformation in Ireland and England: changing stories | Jefferies, Henry A. | Article in Journal | | 2017 |
| Three early 19th century diocesan reports | O'Shea, Kieran | Article in Journal | | 1977 |
| Three early nineteenth century diocesan reports | O'Shea, Kieran | Article in Journal | | 1977 |
| Three unpublished Cistercian documents | [Ó Conbhuí], Colmcille | Article in Journal | | 1955 |
| Thrown among strangers : John Henry Newman in Ireland | McRedmond, Louis | Monograph or Collective Volume | Veritas | 1990 |
| Ths Shankill butchers | Dillon, Martin | Monograph or Collective Volume | Hutchinson | 1989 |
| Ties that bind : ethnic and religious factors in the marriage choices of Irish-American Catholics on the Dakota frontier | Funchion, Michael F. | Article in Journal | | 2010 |
| Timely and substantial relief : New York's Cardinal John Farley and the Easter Rising | Feighery, Kate | Article in Book | | 2016 |
| Times to cherish : Cashel and Rosegreen parish history 1795-1995 | Moloney, Bernie | Monograph or Collective Volume | Parish of Cashel and Rosegreen | 1994 |
| Titus Oates and his 'Popish plot' | Lechmere, Joscelyne | Article in Journal | | 1945 |
| To 'elude the design and intention' of the Penal Laws : collusion and discovery in eighteenth-century Ireland - a case study | Lyons, Emma | Article in Book | NA | 2021 |
| To Hell or to Purgatory? Irish folk religion and post-Tridentine counter-reformation Catholic teachings | O'Connor, Anne | Article in Journal | | 2012 |
| To mass in the gallery | O'Gorman, Dermot | Article in Journal | | 1994 |
| To Russia with love : Father Sean Moriarty and a modern Peregrinatio Pro Christo | Ryan, Salvador | Article in Book | | 2015 |
| To Tara via Holyhead : Irish Catholic immigrants in nineteenth-century Christchurch | Fraser, Lyndon | Monograph or Collective Volume | Auckland University Press | 1997 |
| To Tara via Holyhead : the emergence of Irish Catholic ethnicity in nineteenth-century Christchurch, New Zealand | Fraser, Lyndon | Article in Journal | | 2002 |
| To Tara via Holyhead : the Irish Catholic in nineteenth century Christchurch | Fraser, Lyndon | Article in Book | | 1995 |
| To the greater glory : a history of the Irish Jesuits | McRedmond, Louis | Monograph or Collective Volume | | 1991 |
| Togher celebrates and remembered | Bradley, John | Article in Journal | | 2017 |
| Tolerancia y sistema educativo en Irlanda del Norte | Celador Angón, Óscar | Monograph or Collective Volume | Universidad Carlos III de Madrid | 2003 |
| Toleration and state institutions : British policy towards Catholics in eighteenth-century Ireland and Quebec | Stanbridge, Karen | Monograph or Collective Volume | Lexington Books | 2003 |
| Toleration in later eighteenth-century Ireland : Voltaire and the 'Dublin' and 'Hibernian' magazines, 1762-84 | Gargett, Graham | Article in Book | | 2003 |
| Tomás Ó Fiaich | Ó Glaisne, Risteárd, 1927-2003 | Article in Journal | | 1992 |
| Tomás Ó Fiaich | Ó Glaisne, Risteárd, 1927-2003 | Monograph or Collective Volume | Coiscéim | 1990 |
| Tomás Ó Fiaich - saol agus saothar i Maigh Nuad | Ó Doibhlin, Diarmaid | Article in Book | | 1995 |
| Tomás Ó Fiaich as scholar, teacher, mentor and friend | Ó Muraile, Nollaig | Article in Journal | | 2017 |
| Tomás Ó Fiaich, scoláire | Ó Dufaigh, Seosamh | Article in Journal | | 1978 |
| Tombstone inscriptions of Kilconickny and Lickerrig, Co. Galway | Martyn, Adrian James,Martyn, Noreen | Article in Journal | | 2011 |
| Tombstone inscriptions of the Carmelite Abbey, Loughrea, County Galway | Martyn | Article in Journal | | 2009 |
| Tomhaggard : a sacred place | | Monograph or Collective Volume | Tomhaggard Heritage Group | 2002 |
| Tommaso Giordani, Gregorio Ballabene’s Messa a dodici cori con organo and sacred music in late-eighteenth-century Dublin | Sharpe, Richard | Article in Journal | | 2016 |
| Torna (Tadhg Ó Donnchadha) | Ó Glaisne, Risteárd, 1927-2003 | Article in Book | | 1993 |
| Totalitarian Ulster | Tucker, William John | Article in Journal | | 1944 |
| Touting for respectability : church and state | Ferriter, Diarmaid | Article in Book | | 2024 |
| Towards a 'world-wide empire of the Gael': nationalism, identity, and the Hibernian Australasian Catholic Benefit Society, 1912-1922 | Mannion, Patrick | Article in Journal | | 2022 |
| Towards a biography of an archbishop | Keogh, Dermot | Article in Journal | | 1998 |
| Towards a culture of tolerance | Falconer, Alan | Article in Book | | 2003 |
| Towards a history of devotion to Mary in Ireland, 1100-1600 | O'Dwyer, Peter | Monograph or Collective Volume | Carmelite Publications | 1979 |
| Towards a history of the Cecilian movement in Ireland; an assessment of the writings of Heinrich Bewerange (1862-1923), with a catalogue of his publications and manuscripts | Lawrence, NicholasWhite, Harry | Article in Book | | 1993 |
| Towards a new 'Monasticon Hibernicum' | Gwynn, Aubrey | Article in Journal | | 1959 |
| Towards a reconsideration of the place of traditional music in the Catholic Church | Scahill, Adrian | Article in Book | | 2018 |
| Towards a university : an account of some institutions for higher education in Ireland and elsewhere, and of the attitude of Irish Catholics to them, with particular reference to Queen's College and Queen's University, Belfast | Kennedy, David | Monograph or Collective Volume | Queen's University, Belfast, Catholic Dean of Residences | 1946 |
| Towards the invention of the Irish Catholic natio : Thomas Messingham's Florilegium (1624) | O'Connor, Thomas | Article in Journal | | 1999 |
| Townsend Street chapel | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1943 |
| Tracing the cultural legacy of Irish Catholicism : from Galway to Cloyne and beyond | Maher, EamonO'Brien, Eugene | Monograph or Collective Volume | Manchester University Press | 2017 |
| Tracing the history of a troubled society : Northern Ireland since partition 1921-79 | Phoenix, Eamon | Article in Book | | 1995 |
| Tracing the imprint: Catholicism in some twentieth century Irish fiction | Maher, Eamon | Article in Journal | | 2011 |
| Transcending Language and Ethnicity : Oblates of Mary Immaculate and the Canonical Erection of the Diocese of Calgary, 1912-1916 | Foran, Timothy P. | Article in Journal | | 2008 |
| Transcript from Fr. Haly's private papers on the Jesuit mission in Lurgan 1873 | Haly, Fr. | Article in Journal | | 1990 |
| Transcription and translation of London version of Richard O'Ferrall's report to Propaganda Fide (1658) | Campbell, Ian W. S.Tjoelker, Nienke | Article in Journal | | 2008 |
| Translating the Vatican : Paul Cullen, power and language in nineteenth-century Ireland | O'Connor, Anne | Article in Journal | | 2014 |
| Translating the Vatican : Paul Cullen, power and language in nineteenth-century Ireland | O'Connor, Anne | Article in Journal | | 2014 |
| Treas órd rialta Shain Froinsias i nDíóse Thuama | Mac Uaid, Bearnard | Article in Journal | | 1959 |
| Treasures of Irish Christianity, volume III : to the ends of the earth | | Monograph or Collective Volume | Veritas | 2015 |
| Triangulating opposition : Irish expatriates and hagiography in the seventeenth century | McKenna, Catherine | Article in Book | | 2003 |
| Trias Thaumaturga | Colgan, John | Monograph or Collective Volume | De Búrca | 1997 |
| Trinity College and its only Catholic provost | Brady, Seamus | Article in Journal | | 1940 |
| Trinity College and the religious problem in Irish education | Burke, Andrew E. | Article in Book | | 1990 |
| Triumphant failure: the return of the Irish Papal Brigade to Cork, November 1860 | O'Connor, Anne | Article in Journal | | 2009 |
| Troppo Ardenti Sacerdoti : the Conroy mission revisited | Perin, Roberto | Article in Journal | | 1980 |
| Trouble at Pubble : inscriptions from a Fermanagh graveyard and an episode from its history | Mac Annaidh, Séamus | Article in Journal | | 2003 |
| Trouble in the north end : the geography of social violence in Saint John, 1840-1860 | Winder, Gordon M. | Article in Journal | | 2000 |
| Troubled curate days. ...reminiscences of the Sinn Fein days | Brennan, Malachy, Canon | Article in Journal | | 1996 |
| Troy to Bray : letters from Dublin to Thurles, 1792-1817 | | Article in Journal | | 2001 |
| Troy to Carroll : letters from Dublin to Baltimore, 1794-1815 | | Article in Journal | | 1998 |
| Truth and calumny in Baroque Rome: Richard O'Ferrall and the "Commentarius Rinnuccinianus", 1648-1667 | Campbell, Ian W. S. | Article in Journal | | 2012 |
| Tuam two centuries ago | Claffey, Tony | Article in Journal | | 2015 |
| Tuath na Dromann : a history of Cill na Martra | Murphy, Donal, 1957- | Monograph or Collective Volume | Original Writing | 2008 |
| Tuggen und Bodman : Bemerkungen zu zwei römischen itinerarstationen | Lieb, Hans | Article in Journal | | 1952 |
| Tullamore Catholic church : a historical survey | Byrne, Michael | Monograph or Collective Volume | Tullamore Parish Committee | 1987 |
| Tullow's story : a portrait of a county Dublin parish | Simms, George Otto | Monograph or Collective Volume | Select Vestry of Tullow Parish | 1983 |
| Turbulent diocese : the Killala troubles, 1798-1848 | Hoban, Brendan | Monograph or Collective Volume | Banley House | 2011 |
| Turning the century : Catholics decadent and Prestonian | Smith, Tom, 1931- | Article in Book | | 2003 |
| Twentieth-century American Catholicism and Irish Americans | Shelly, Thomas J. | Article in Book | | 2006 |
| Twentieth-Century Scottish Catholicism: Poverty, Affluence, Freedom | Gilfillan, Paul | Article in Book | Oxford University Press | 2023 |
| Two bishops and a football : Ireland and the Balkans in the 1940s and '50s | Slattery, Linda | Article in Journal | | 2007 |
| Two Catholic 'gentleman' of the 1860s and whatever happened to Carbery Show | O'Regan, Liam | Article in Journal | | 1996 |
| Two centuries of Catholic instruction in the diocese of Ferns | Tynan, Michael | Article in Journal | | 1988 |
| Two centuries of Catholicism in County Wexford | Corish, Patrick J. | Article in Book | | 1987 |
| Two Clongowes centenaries | Savage, Roland | Article in Journal | | 1941 |
| Two contemporary historians of the confederation of Kilkenny : John Lynch and Richard O'Ferrall | Corish, Patrick J. | Article in Journal | | 1953 |
| Two diocesan reports : Elphin (1753) and Killaloe (1792) | | Article in Journal | | 1972 |
| Two Dominican martyrs of Ireland | Fenning, HughValkenburg, Augustine | Monograph or Collective Volume | Dominican | 1992 |
| Two early eighteenth century bishops of Killaloe | Murphy, Ignatius | Article in Journal | | 1986 |
| Two Irish Jesuits : Andrew Sall (1612-86) and Andrew Sall (1624-82) | Breeze, Andrew | Article in Journal | | 1996 |
| Two Lands on One Soil : Ulster Politics before Home Rule | Wright, Frank | Monograph or Collective Volume | Gill & Macmillan | 1996 |
| Two letters in Irish from Domhnall Mac Suibhne OSA in Nantes (1640) [with index] | O'Scea, CiaranÓ Ciosáin, ÉamonÓ Macháin, Pádraig | Article in Journal | | 2015 |
| Two letters of Cardinal Cullen, 1871 and 1873 | Walsh, Katherine | Article in Journal | | 1973 |
| Two men of Roscrea : Martin Walsh and Michael Meagher | Walsh, Laurence | Article in Journal | | 1983 |
| Two nineteenth-century Catholic poets : Gerard Manley Hopkins and Aubrey de Vere | Samway, Patrick | Article in Journal | | 2017 |
| Two priests of Naas | Costello, Con | Article in Journal | | 1987 |
| Two priests, the family and the Irish Constitution | Kennedy, Finola | Article in Journal | | 1998 |
| Two reports on the Catholic Church in Ireland in the early seventeenth century | | Article in Journal | | 1959 |
| Two seventeenth-century proclamations against the Catholic clergy | Corish, Patrick J. | Article in Journal | | 1984 |
| Two sieges and a murder: the 1641 rebellion in Ardmore | Harrington, Richard | Article in Journal | | 2022 |
| Two sixteenth century Munster primates : Donnchadh Ó Taidhg (1560-62) & Richard Creagh (1564-85) | O'Brien, W. P. | Article in Journal | | 1989 |
| Two studies in integrity : Gerald Griffin and the Rev. Francis Mahony (Father Prout) | Mannin, Ethel | Monograph or Collective Volume | Jarrolds | 1954 |
| Two Wexford priests and '98 | MacGrath, Kevin | Article in Journal | | 1948 |
| Two Wexford priests and '98 | MacGrath, Kevin | Article in Journal | | 1948 |
| Uaitéar Ó Loingsigh, Easbog Chluain Fearta (1647-63) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1942 |
| Ulster 1600-2000 : posing the question? | Bartlett, Thomas | Article in Journal | | 1998 |
| Ulster : l'Irlande des fous de Dieu | De Groulart, Claude | Monograph or Collective Volume | Rossel | 1976 |
| Ulster : the internal colony | Anonymous | Monograph or Collective Volume | Queen's University of Belfast, Ulster Unionist Association | 1993 |
| Ulster exiles in Europe, 1605-1641 | Henry, Gráinne | Article in Book | | 1993 |
| Ulster opposition to Catholic emancipation, 1828-9 | Kingon, Suzanne T. | Article in Journal | | 2004 |
| Ulster Presbyterians and the 'Two Traditions' in Ireland and America | Miller, Kerby A. | Article in Book | | 2006 |
| Ultramontanism in Quebec and the Irish connection | Bowen, Desmond | Article in Book | | 1988 |
| Umaum-an-affrin | M., S. | Article in Journal | | 1997 |
| Un interesse reciproco : lo scambio di rappresentanze diplomatiche tra Santa Sede e Irish Free State | Di Sanzo, Donato | Article in Journal | | 2016 |
| Un teologo irlandese nella Roma del Seicento : il francescano Luke Wadding | Broggio, Paolo | Article in Journal | | 2010 |
| Una communita gotto controllo : operazioni contro-inzurrezionali delle forze de sicurezza britanniche nel quartiere catholico di Ballymurphy | Pistoi, Paolo | Monograph or Collective Volume | Pistoi|Angeli | 1981 |
| Una lettera di Luke Wadding ad Ilarione Rancati sull'Immacolata Concezione | | Article in Journal | | 2018 |
| Unaware | Ward, Owen | Article in Journal | | 2016 |
| Under the Union flag : the Catholic Church in Ireland, 1800-1870 | Kerr, Donal A. | Article in Book | | 1989 |
| Undermining the Molly Maguires | Bloom, Joseph H. | Article in Journal | | 1999 |
| Understanding Northern Ireland | Quinn, Dermot A. | Monograph or Collective Volume | Baseline | 1993 |
| Une diocèse de l'Église établie d'Irlande à l'époque georgienne, d'après une visite épiscopale : Ossory | Loupès, P. | Article in Journal | | 1983 |
| Unholy orders : tragedy at Mount Cashel | Harris, Michael | Monograph or Collective Volume | Viking | 1990 |
| United and disunited Irishmen : the discourse of sectarianism in the 1790's | Whelan, Kevin | Article in Book | | 1995 |
| United States documents in the Propagands Fide archives. Vol. 2 | Kenneally, Finbarr | Monograph or Collective Volume | Academy of American Franciscan History | 1968 |
| Unity in division : a history of Christianity in Kilcock and Newtown parish 400-2000 | | Monograph or Collective Volume | Kilcock Publication Millennium Committee | 1999 |
| University College Dublin and Spanish fascism - an unlikely partnership? | Whelan, Barry | Article in Journal | | 2014 |
| University education, history, and the hierarchy | Barr, Colin | Article in Book | | 2003 |
| Unremembering the devotional revolution | Murphy, James H. | Article in Book | | 2005 |
| Unusual suspects : twelve radical churchmen | Carroll, Denis | Monograph or Collective Volume | Columba | 1998 |
| Unveiling of martyrs' monument at Kilmallock | Seoighe, Mainchín | Article in Journal | | 2000 |
| Up off their knees : a commentary on the civil rights movement in Northern Ireland | McCluskey, Conn | Monograph or Collective Volume | Conn McCluskey and Associates | 1989 |
| Up the west! silver jubilee, Church of the Annunciation 1967-1992 : aspects of the history and development of our parish, Finglas West | O'Leary, Frank | Monograph or Collective Volume | Finglas West Silver Jubilee Committee | 1992 |
| Upholding the commandments and the will of the majority: the Catholic hierarchy, the October 1922 pastoral, and the Irish civil war | Waldron, KieranÓ Corráin, Daithí | Article in Journal | | 2023 |
| Urban Catholics : urban Catholicism in England and Wales from 1829 to the present day | Hickey, John | Monograph or Collective Volume | | 1967 |
| Urban Minorities and Majorities : Catholics and Protestants in Towns c.1659-1850 | O'Flanagan, P. | Article in Book | | 1988 |
| Ursuline Convent, Blackrock, Cork : its archives and a note on its history | Clarke, Ursula | Article in Journal | | 2000 |
| Using the Irish language to further the aims of two bible societies: an analysis of Irish-language bibles in the Russell Library, Maynooth | McCormack, Barbara | Article in Book | | 2017 |
| Ussher as a churchman | Sykes, Norman | Article in Journal | | 1956 |
| Vatican Archives as a historical source to c. 1530 | Haren, M. J. | Article in Journal | | 1984 |
| Vatican archives; Lettere di Particolari : material relating to Ireland | Giblin, Cathaldus | Article in Journal | | 1973 |
| Vatican diplomacy and the mission of Rinuccini to Ireland | Ó hAnnracháin, Tadhg | Article in Journal | | 1993 |
| Vatican II : the Irish experience | Lane, Dermot A. | Article in Book | | 2004 |
| Venerable Archdeacon Cavanagh, pastor of Knock, 1867-97 | Ua Cadhain, Liam | Monograph or Collective Volume | Shrine Society | 1953 |
| Venerable Tuam connections - Edel Quinn | Goggin, Deirdre | Article in Journal | | 2005 |
| Viceregal vignettes : Lords lieutenant of Ireland under William Pitt, the Younger, 1784-1801 | Schweitzer, D. R. | Article in Journal | | 1986 |
| Vicissitudes of an Irish Catholic family under Henry VIII and Elizabeth | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1953 |
| Victimhood and attitudes towards dealing with the legacy of a violent past : Northern Ireland as a case study | Brewer, John D.Hayes, Bernadette E. | Article in Journal | | 2015 |
| Vignettes : biecentennial commemoration publication on Fr James Curley S.J. 1796-1889, astronomer, priest, professor at Georgetown College, Washington D.C. formerly of Athleauge , Co Roscommon, Ireland. Including previously unpublished letters, photos, essays, features incorporating Athleague/Fuerty miscellany and 19 century Irish famine remembrance | | Monograph or Collective Volume | Moran/Cartur Publications | 1996 |
| Vincent de Paul Society, Limerick, and the famine | Walsh, Laurence | Article in Journal | | 1995 |
| Vincent de Paul, the Lazarist Mission, and French Catholic Reform | Forrestal, Alison | Monograph or Collective Volume | Oxford University Press | 2017 |
| Vincentian Mission in Strokestown 12th May - 9th June 1867. First Mission in Strokestown | Anonymous | Article in Journal | | 1998 |
| Violence in Northern Ireland, 1969-1994 : sectarian or ethno-national | O'Duffy, Brendan | Article in Journal | | 1995 |
| Violence, politics and Catholicism in Ireland | Rafferty, Oliver P. | Monograph or Collective Volume | Four Courts | 2016 |
| Vision and reality : a survey of twentieth-century Irish inter-church relations | Ellis, Ian M. | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1992 |
| Vision unrealized : the Presbyterian mission to Irish Roman Catholics in the nineteenth century | Rodgers, R. J. | Article in Journal | | 1991 |
| Visitatio Ecclesie S. Isidori Die 25 Augusti 1628. La fabbrica dei Frati Minori irlandesi a Roma | | Article in Journal | | 2013 |
| Visual marianism and national identity in Ireland, 1920-1960 | Turpin, John | Article in Book | | 2003 |
| Visualizing Ireland's first cardinal | Cullen, Fintan | Article in Book | | 2011 |
| Vocation and vision | McAvera, Brian | Article in Journal | | 2009 |
| Vocationalism and social Catholicism in twentieth-century Ireland : the search for a Christian social order | O'Leary, Don | Monograph or Collective Volume | Irish Academic Press | 2000 |
| Vocationalism in emergency Ireland | O'Leary, Don | Article in Book | | 2004 |
| Vocations : a review of national and international trends | Weafer, John | Article in Journal | | 1988 |
| Voices from the grave : II, family relations of Father James O'Coigley | Downie, Patrick F. | Article in Journal | | 1954 |
| Wadding and the Iberian peninsula | De Castro, Manuel | Article in Book | | 1957 |
| Walter McDonald's window on Maynooth, 1870-1920 | Fuller, Louise | Article in Book | | 2005 |
| War and peace : the survival of the Talbots of Malahide 1641-1671 | Byrne, Joseph | Monograph or Collective Volume | Irish Academic Press | 1997 |
| War in the Bandon valley, 1641-42 | Carroll, Finbarr | Article in Journal | | 1992 |
| Warrenpoint | Donoghue, Denis | Monograph or Collective Volume | Cape | 1991 |
| Wars of religion, 1641– 1691 | Cronin, John JermiahLenihan, Pádraig | Article in Book | | 2018 |
| Was Berkeley a Jacobite? Passive Obedience revisited | Ross, Ian Campbell | Article in Journal | | 2005 |
| Was it really a 'Godless' college? : response to Professor Holmes | Murphy, John A. | Article in Book | | 1997 |
| Was O'Connell necessary? Sir Joseph Dillon, Scotland, and the movement for Catholic Emancipation | Aspinwall, Bernard | Article in Book | | 1984 |
| Was the civil rights movement a republican/communist conspiracy? | Purdie, Bob | Article in Journal | | 1988 |
| Waterbury Irish : from the Emerald Isle to the Brass City | Maher, Janet | Monograph or Collective Volume | History Press | 2015 |
| Waterford and the first century of the Irish College of Salamanca : a gallery of illustrious students and the projected library of the rector Paul Sherlock, 1595-1646 | Burguillo López, JavierDe León Perera, Cristo José | Article in Book | NA | 2026 |
| Weasels in a hole : ideologies of the Irish conflict | Smith, Jim | Article in Book | | 1991 |
| Welcoming the stranger : Irish migrant welfare in Britain since 1957 | Kennedy, Patricia | Monograph or Collective Volume | Irish Academic Press | 2015 |
| Wentworth and Dublin's Catholic clergy : a document from the Strafford Papers | O'Connor, Tim | Article in Journal | | 2005 |
| Westminister and the early civil rights struggle in Northern Ireland | Feeny, Vincent E. | Article in Journal | | 1976 |
| Wexford support for the Pope in 1870 | Murphy, Hilary | Article in Journal | | 1992 |
| What happened to Fr Seán Fagan? | Hanley, Angela | Monograph or Collective Volume | Columba Press | 2019 |
| What is meant by Catholic Emancipation | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1930 |
| What parish are you from? : a Chicago Irish community and race relations | McMahon, Eileen M. | Monograph or Collective Volume | University Press of Kentucky | 1995 |
| When God took sides : religion and identity in Ireland : unfinished history | Elliott, Marianne | Monograph or Collective Volume | Oxford University Press | 2009 |
| When integrated education came to North Armagh | Moffat, Chris | Article in Journal | | 2015 |
| When Raphoe first had two bishops | Meehan, Helen | Article in Journal | | 2002 |
| When reformations collide | McCafferty, John | Article in Book | | 2002 |
| When the world came to Dublin. An excerpt form 'The 1932 Eucharistic Congress' by Rory O'Dwyer | O'Dwyer, Rory | Article in Journal | | 2009 |
| Where does the state end and the church begin? the strange career of Richard S. Devane | Beatty, Aidan | Article in Journal | | 2019 |
| Where Erne and Drowes meet the sea : fragments from a Patrician parish | Ó Gallachair, Pádraig | Monograph or Collective Volume | Donegal Democrat | 1961 |
| Where I sensed the breath of God : a footnote in Anglo-Irish history | Evans, Roddy | Monograph or Collective Volume | David H. Hume | 2002 |
| Whig and Tory Rivalry on Galway Corporation, 1705-1717 | Hayton, D.W. | Article in Journal | | 2023 |
| Who is leading? Archbishop John Thomas Troy and the priests and people in the Archdiocese of Dublin, 1787-1823 | McNally, Vincent J. | Article in Journal | | 1995 |
| Who succeeded Blessed Oliver Plunkett? | Ó Fiaich, Tomás | Article in Journal | | 1956 |
| Who will be Ireland's next canonised saint? : a study of Blessed Oliver Plunkett | Bastible, J. | Article in Journal | | 1939 |
| Who wrote 'Lillibullero'? If not Tom Wharton, what about Robert Ware and Henry Wharton? | Ferguson, Kenneth | Article in Journal | | 2021 |
| Why 1215? : the making of the sacraments of confession | Gibbons, Elizabeth | Article in Book | NA | 2006 |
| Why did Pope John Paul II visit Ireland? the 1979 papal visit in context | Ó Corráin, Daithí | Article in Journal | | 2020 |
| Why did Pope John Paul II visit Ireland? The 1979 papal visit in context | Ó Corráin, Daithí | Article in Journal | | 2021 |
| Why the Reformation failed in Ireland | Jefferies, Henry A. | Article in Journal | | 2016 |
| Why Ulster distrusts Roman Catholicism | Anonymous | Article in Journal | | 1912 |
| Wicklow and the Eucharistic Congress 1932 | Finlay, John | Article in Journal | | 2012 |
| Wicklow Catholic Club, report of the annual general meeting of the Catholic Club 1931 | Kavanagh, E. | Article in Journal | | 2003 |
| Wicklow parish : a history of the development of the present Catholic parish with an account of various religious foundations of medieval times | Clarke, Michael | Monograph or Collective Volume | English | 1944 |
| Widows' inheritance in seventeenth-century Ireland | Lyons, Emma | Article in Journal | | 2005 |
| Wild geese : the Irish in European armies (sixteenth to eighteenth centuries) | McGurk, J. N. N. (John James Noel) | Article in Book | | 1992 |
| Wildgoose Lodge - an addendum | Ó Muirí, Réamonn | Article in Journal | | 2005 |
| Wildord, the bishop's house | Flannery, Pearl | Article in Journal | | 1987 |
| Will and codicils of primate Richard O'Reilly (d. 1818) | Ó C., M. | Article in Journal | | 1957 |
| Will Home Rule be Rome Rule? | Mahaffy, J. P. (John Pentland) | Article in Journal | | 1912 |
| Will they ever stop fighting...? The Bishop of Cork and the Regulars in 1815 | Conlan, Patrick, 1940- | Article in Journal | | 2010 |
| William Bathe, S.J. (1564-1614) | Kingston, John | Article in Journal | | 1954 |
| William Bathe, S.J., recusant scholar, 1564-1614 : 'weary of the heresy' | Ó Mathúna, S. P. | Article in Journal | | 1988 |
| William Bedell, 1571-1642 | Anonymous | Article in Journal | | 1944 |
| William Canon Carrigan, 1860-1924 | Phelan, Margaret M. | Article in Journal | | 1976 |
| William Carleton's literary religion | Howes, Marjorie | Article in Book | | 2005 |
| William Coghlan : recalling an address from the people of Charleville, 1886 | McCarthy, C. J. F. | Article in Journal | | 1988 |
| William Crolly, Archbishop of Armagh 1835-49 | McCauley, Ambrose | Article in Journal | | 1989 |
| William Crolly, Archbishop of Armagh 1835-49 | Macaulay, Ambrose | Article in Journal | | 2000 |
| William Crolly, archbishop of Armagh, 1835-1849 | Macaulay, Ambrose | Monograph or Collective Volume | Four Courts | 1994 |
| William Crolly, archbishop of Armagh, 1835-49 | Macaulay, Ambrose | Article in Journal | | 1990 |
| William Francis Norman O'Loughlin (1849-1912), Senior Surgeon aboard Titanic | Codd, Edel M. | Article in Journal | | 2024 |
| William III and religious tolerance | Troust, Wooter | Article in Book | | 1995 |
| William J. Onahan - the leading Catholic layman of America | McKenna, Dermot | Article in Journal | | 1996 |
| William J. Walsh, 1908-21 | Keogh, Dáire | Article in Book | | 2008 |
| William J. Walsh, archbishop of Dublin | Walsh, Patrick | Monograph or Collective Volume | Talbot Press | 1928 |
| William J. Walsh, archbishop of Dublin, 1841-1921 | Morrissey, Thomas J. | Article in Journal | | 2008 |
| William J. Walsh, Archbishop of Dublin, 1841-1921 | Morrissey, Thomas J. | Article in Journal | | 2008 |
| William J. Walsh, Archbishop of Dublin, 1841-1921, no uncertain voice | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2000 |
| William Mark Duke, archbishop | Walsh, C. J. | Article in Journal | | 1988 |
| William Molyneux, a herald of democracy | Chillingworth, H. R. | Article in Journal | | 1946 |
| William Monsell : a Roman Catholic Francophile Anglo-Irishman | Potter, Matthew | Article in Book | | 2006 |
| William Monsell : an Irish Catholic Unionist | Potter, Matthew | Article in Journal | | 2001 |
| William Monsell and Papal Infallibility : the workings of an inopportunist's mind | Roantree, Dermot | Article in Journal | | 1988 |
| William Monsell, M.P. and the Catholic question in Victorian Britain and Ireland | Roantree, Dermot Stephen | Thesis | | 1990 |
| William Murphy and orangism in mid-Victorian England | Downer, Daniel | Article in Journal | | 2016 |
| William Ronan, SJ, 1825-1907. War Chaplain, Missioner, Founder of Mungret College | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2003 |
| William Walsh, first archbishop of Halifax (1804-1858) | Kelly, Charlotte | Article in Journal | | 1945 |
| Wills in Killann Parish Archive 1870-1915 | McGoohan, Ultan | Article in Journal | | 2022 |
| Window on a Catholic parish : St. Mary's, Granard, Co. Longford, 1933-68 | Kelly, Francis | Monograph or Collective Volume | Irish Academic Press | 1996 |
| Wisdom and Mercy Meet : Catherine McAuley's interpretation of Scripture | Davis, Elizabeth M. | Article in Book | | 2007 |
| With all those nuns watching you : popular literature and the culture of catholic schooling, 1900-1970 | Perko, Michael | Article in Journal | | 1987 |
| With all those nuns watching you : popular literature and the culture of catholic schooling, 1900-1970 | Perko, Michael | Article in Journal | | 1987 |
| With the Irish in the Papal army | O'Farrell, Padraic | Article in Journal | | 1982 |
| Wolfe Tone Annual, 1943. Story of the penal days | Anonymous | Monograph or Collective Volume | Brian O'Higgins | 1943 |
| Women and Catholic life in Dublin, 1766-1852 | Enright, Séamus | Article in Book | | 2000 |
| Women and Jesuit ministry in Ireland, c.1600–c.1670 | Lyons, Mary Ann | Article in Book | | 2022 |
| Women and philanthropy in nineteenth-century Ireland | Luddy, Maria | Monograph or Collective Volume | Cambridge University Press | 1995 |
| Women and religious practice | Corish, Patrick J. | Article in Book | | 1991 |
| Women and the church since the Famine | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1978 |
| Women and the Reformation in seventeenth-century Ireland | Kilroy, Phil | Article in Book | | 1991 |
| Women and the Reformation in Tudor Ireland | Jefferies, Henry A. | Article in Journal | | 2022 |
| Women readers and Catholic magazines | Ní Bhroiméil, Úna | Article in Book | | 2011 |
| Women religious in the history of Australia 1888-1950 : a case study - the Sisters of Mercy, Parramatta | McGrath, Sophie | Article in Journal | | 1995 |
| Women Religious, Charitable Ministries and the Welfare State | Mangion, Carmen M. | Article in Book | Oxford University Press | 2023 |
| Women's art in Ireland and Poland 1970-2010: Experiencing and experimenting on the female body | Morrison, Valérie | Article in Journal | | 2012 |
| Women's rights and Catholicism in Ireland | Mahon, E. | Article in Journal | | 1987 |
| Women, citizenship and Catholicism in the Irish Free State, 1922-1948 | Beaumont, Caitríona | Article in Journal | | 1997 |
| Women, domesticity and the family : recent feminist work in Irish cultural studies | Wills, Clair | Article in Journal | | 2001 |
| Women, solidarity and the 1913 Lockout : Dora Montefiore and the 'Save the Kiddies' scheme | Hunt, Karen | Article in Book | Dublin City Council | 2013 |
| Worker response to the 1920 Belfast shipyard expulsions : solidarity or sectarianism? | Norton, Christopher | Article in Journal | | 1996 |
| Worlds apart : segregated schools in Northern Ireland | Murray, Dominic | Monograph or Collective Volume | Appletree Press | 1985 |
| Writing Robert Dunne : Brisbane's first Catholic archbishop | Byrne, Neil J. | Article in Book | | 1995 |
| You are the people, who are we? Reflecting on the Irish-Catholic contribution to Scottish society | Reilly, Patrick | Article in Book | | 1998 |
| Young Carew and Fr Tom Furlong of Harriestown | McDonald, Tom | Article in Journal | | 2005 |
| Young Ireland and the Catholic clergy in 1844 : contemporary deceit and historical falsehood | O'Connell, Maurice R. | Article in Journal | | 1988 |
| Zealots, censors and perverts : Irish censorship and Liam O'Flaherty's The Puritan | Kent, Brad | Article in Journal | | 2006 |
| [The Catholic emancipation movement and the people : one view of popular politics in Ireland during the 1820s] | Katsuta, Shunsuki | Article in Journal | | 1995 |
| « Papistes » ou « catholiques » ? « Papisme » ou « catholicité »?, Terminologie confessionnelle et culture politique en Irlande et aux États-Unis à la fin du 18e et au début du 19e siècle | Burke, Martin J. | Article in Journal | | 2002 |
| ‘A development of practical Catholic emancipation’ : laying the foundations for the Roman Catholic urban landscape, 1850–1900 | NicGhabhann, Niamh | Article in Journal | | 2019 |
| ‘A source of sad annoyance’: the Irish and crime in south Wales, 1841–81 | Summers, Veronica | Article in Journal | | 2009 |
| ‘Bullworks against the furie of heresie’: Identity, Education, and Mission in the English Jesuit College of St Omers | Graffius, Jan | Article in Book | | 2018 |
| ‘I have been trying very hard to be powerful “nice” …’ : the correspondence of Sister M. De Sales (Brennan) during the American Civil War | Quinn, E. Moore | Article in Journal | | 2010 |
| ‘Indecent and suggestive pictorial matter’ : banning Picture Post in Ireland | O'Brien, Mark | Article in Journal | | 2023 |
| ‘Now him white man‘
images of the Irish in colonial Australia | Hall, Dianne | Article in Journal | | 2014 |
| ‘Staging a lie' : Boston Catholics and the new Irish drama | Kane, Paula M. | Article in Book | | 1996 |
| ‘There but for the grace of God go I’ : middle-class Catholic responses to Ireland’s Great Famine | Delaney, Enda | Article in Journal | | 2020 |
| ‘They are murderers’ : the English Catholic Church and Provisional IRA attacks on London | Scull, Margaret M. | Article in Journal | | 2020 |
| “An Italian of the Vatican type” : the Roman formation of Cardinal Paul Cullen, Archbishop of Dublin | Barr, Colin | Article in Journal | | 2016 |
| “In sober dignity” : the Irish Brigade, ethnicity, and the Irish Catholic temperance movement in the Civil War era | Smithmyer, Abbi | Article in Journal | | 2021 |
| “Language which will move their hearts” : speaking power, performance, and the lay-clerical relationship in modern Catholic Ireland | Delay, Cara | Article in Journal | | 2014 |
| “Take and eat” : links between the Eucharist and human flesh in some twentieth-century Irish texts | Maher, Eamon | Article in Journal | | 2018 |
| “Well, we didn’t pass a bit o’ remarks on it. It was second nature to us” : the rituals of fasting in Ireland before Vatican II | Deleuze, Marjorie | Article in Journal | | 2018 |
| “With Every Wish to Reconcile”: 'The Memoirs of the Life and Writings of Charles O’Conor of Belanagare' (1796) and Religious Enlightenment in Ireland | Tsapina, Olga A. | Article in Journal | | 2012 |
| “’Tis yourself is a skeleton” : deathbed scenes and ethnic identity in Irish-American short fiction, 1895–1910 | Cusack, ChristopherJanssen, Lindsay | Article in Journal | | 2022 |