| "To be named is to exist" : the instructive case of Achadh Bolg (Aghabulloge) | Ó Riain, Pádraig | Article in Book | | 1993 |
| 'All well here': the Diary of Bishop Joseph Stock, 1811 | Flaherty, Cian | Article in Journal | | 2019 |
| 'Drong' and 'Dál' as synonyms for 'Óenach' | MacCotter, Paul | Article in Journal | | 2012 |
| 'God bless your free Church of Ireland' : Wentworth, Laud, Bramhall and the Irish Convocation of 1634 | McCafferty, John | Article in Book | | 1996 |
| 'My repeated troubles' : Dr James Gallagher (bishop of Raphoe 1725-37) and the impact of the Penal Laws | Mac Murchaidh, Ciarán | Article in Book | | 2011 |
| 'The Vile System of Altar Denunciation'. The case of Fr Anthony Nolan, PP, Monsea Co. Tipperary | Grace, Daniel | Article in Journal | | 2012 |
| A bishop backs Sinn Féin | Fogarty, Michael, Bishop of Killaloe | Article in Book | | 2016 |
| 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 British patriarchy? : ecclesiastical imperialism under the early Stuarts | Morrill, John Stephen, 1946- | Article in Book | | 1994 |
| A calendar of Papal Registers relating to Clonfert Diocese | Larkin, Patrick | Monograph or Collective Volume | Patrick Larkin | 2017 |
| A calendar of the letters of Thomas Bray, Archbishop of Cashel, 1792-1820 | Meagher, Mary T. | Thesis | | 1966 |
| A calendar of the papers of Michael Slattery, archbishop of Cashel, 1834-57 | Tierney, Mark | Thesis | | 1965 |
| A calendar of the reassembled register of John Bole, archbishop of Armargh, 1457-1471 | Lynch, A. | Article in Journal | | 1992 |
| A changing church | Murphy, Brian | Article in Book | | 2005 |
| A charge addressed to the clergy of the Dioceses of Armagh and Clogher at the Annual Visitation, 1864 | Gervais, Marcus | Monograph or Collective Volume | Hodges, Foster | 1865 |
| A clerical dogfight, 1767-1772 : the appointment of Archbishop James Butler II of Cashel | Moloney, John | Article in Journal | | 1983 |
| A comment on Fr. Aubrey Gwynn's 'The medieval province of Armagh' | Ó Ceallaigh, Séamus | Article in Journal | | 1953 |
| A dominant church : the diocese of Achonry 1818-1960 | Swords, Liam | Monograph or Collective Volume | Columba | 2004 |
| A group of related synodal statutes of the 13th century | Cheney, Christopher Robert | Article in Book | | 1961 |
| A guide to local history sources in the Public Record Office of Northern Ireland | Bardon, Jonathan, 1941- | Monograph or Collective Volume | Blackstaff Press | 2000 |
| A history of Mullingar Presbyterian Church | Lockington, John W. | Monograph or Collective Volume | The author | 2013 |
| 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 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 Killaloe, Vol. 1 | Gleeson, Dermot F.Gwynn, Aubrey | Monograph or Collective Volume | Gill | 1962 |
| A history of the diocese of Raphoe | Maguire, Edward | Monograph or Collective Volume | [s.n.] | 1920 |
| A history of the Irish church, 400-700 AD | Bradley, ThomasWalsh, John R. | Monograph or Collective Volume | Columba | 1993 |
| A life of Patrick Cardinal O'Donnell | Gallagher, John P. | Thesis | | 1975 |
| A man for his season : bishop Neil Farren of Derry, 1939-1973 | Canning, B. J. (Bernard J.) | Article in Journal | | 1989 |
| A man who 'did not seek the society of many': Bishop Edward McGennis (1846-1906) | Kelly, Liam | Article in Journal | | 2022 |
| A memoir of the late Albert Blest | Motherwell, M. C. | Monograph or Collective Volume | | 1843 |
| A new source for the medieval history of the diocese of Armagh | Gwynn, Aubrey | Article in Journal | | 1955 |
| A note on the Uí Mhaoir of Drumcliff, Co. Clare | McInerney, Luke | Article in Journal | | 2011 |
| 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 of Archbishop O'Reilly, 1788 | | Article in Journal | | 1961 |
| A poem on the rights of the coarb of Saint Molaisse | Ó Canann, Tomás G. | Article in Journal | | 1994 |
| A profile of Bernard Burke (1789-1861) | McGuire, Shane | Article in Journal | | 1987 |
| A seventeenth-century Irish version of the rule of St. Clare : glossarial Index | | Article in Journal | | 1950 |
| A short history of some Dublin parishes. Parts 15-17 | Donnelly, Nicholas | Monograph or Collective Volume | Carraig Books | 1983 |
| A short history of the Diocese of Elphin | Mooney, Canice | Article in Book | | 2000 |
| 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 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. 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 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 sixteenth-century register of Achonry | Swords, Liam | Article in Journal | | 1998 |
| A slanderous bishop (R. Wye, bishop of Cloyne, 1376) | Butler, James | Article in Journal | | 1937 |
| A Spanish Franciscan archbishop of Dublin : Fr Matthew of Oviedo, O. F. M. | Barrett, Fergus | Article in Journal | | 1941 |
| A statistical return of Armagh diocese in 1836 | O'Kane, Louis | Article in Journal | | 1958 |
| A study of ecclesiastical appointments in the province of Tuam, 1399-1477 | Cosgrave, Ruth | Thesis | | 1968 |
| 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 tale of two bishops | Farry, Michael | Article in Journal | | 1991 |
| A tale of two cathedrals Aghadoe and Ardfert. 12th-century religious reform | O'Donoghue/Ross, Elizabeth | Article in Journal | | 2014 |
| A time of change and consolidation - Ferns in the nineteenth century | Morris, Fintan | Article in Book | | 1999 |
| Abbesses, minor dynasties and kings in clericatu : perspectives of Ireland, 700-850 | Bhreathnach, Edel | Article in Book | | 2001 |
| Abraham Brownrigg. Carlovian and eminent churchman | Murphy, Rory | Article in Journal | | 1996 |
| Albrecht Suerbeer, archbishop of Armagh | Conlan, Patrick, 1940- | Article in Journal | | 2004 |
| All were together, seemingly conspiring | Matthiesen, Leroy T. | Article in Journal | | 2005 |
| Alternative establishments? Insular Catholicism and Presbyterianism | Armstrong, RobertÓ hAnnracháin, Tadhg | Article in Book | | 2013 |
| An 18th century episcopal instruction for Ossory | Costello, Con | Article in Journal | | 1983 |
| An appeal of the Ulster Franciscans against Blessed Oliver Plunket | Jennings, Brendan | Article in Journal | | 1956 |
| An article on the foundation and endowment of the Church of Trim, 432 A.D. | Athey, Rowland | Article in Journal | | 1955 |
| An Augustinian Provincial Chapter at Fatherd, 1649 | Fenning, Hugh | Article in Journal | | 2006 |
| An Cairdinéal Tomás Ó Fiaich agus comhthéacs an chreidimh in Éirinn | Ó Maolfabhail, Donncha | Article in Journal | | 1992 |
| An early list of county Donegal parishes | Ó Gallachair, Pádraig | Article in Journal | | 1974 |
| An ecclesiastical trial. An examination of the trial, in 1776, of the Rev. Edward Smyth, curate of Ballyculter parish | Kennedy, W. E. | Article in Journal | | 1989 |
| An extract from Bishop David Moriarty's diary, 1856 | O'Shea, Kieran | Article in Journal | | 1984 |
| An incident between the French Canadians and the Irish in the Diocese of Maine in 1906 | Woodbury, Kenneth B. | 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 counter-reformation bishop : John Roche | Corish, Patrick J. | Article in Journal | | 1959 |
| An Irish seventeenth-century translation of the rule of St. Clare | | Article in Journal | | 1948 |
| An old Armagh See rental | Love, H. W. | Article in Journal | | 1965 |
| An tEasbog Tomás Mhac Comhain (1831-1847) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1946 |
| An tEasbog Tomás Ó Coisdealbha, 1786-1831 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1945 |
| Ancient and present state of the county and city of Waterford : containing a natural, civil, ecclesiastical, historical and topographical description thereof | Smith, Charles | Monograph or Collective Volume | Waterford County Council in association with Waterford City Council | 1746 |
| Anglican Ireland : a brief history and explanation of the Church of Ireland to mark the meeting of Anglican primates of Ireland, 1991 | Gibson-Harries, Elizabeth | Monograph or Collective Volume | [s.n.] | 1991 |
| Anglo-Irish church life : fourteenth and fifteenth centuries | Gwynn, Aubrey | Monograph or Collective Volume | Gill | 1968 |
| Archaeology and early church organisation on Iveragh and Dingle, Ireland | O'Carragain, Tomas | Article in Book | | 2003 |
| Archbishop Carpenter and the Catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| Archbishop Crolly and the development of Catholicism in Ulster 1812-49 | Macaulay, Ambrose | Monograph or Collective Volume | St Mary's College | 1990 |
| Archbishop Daniel Mannix | Griffin, James | Article in Journal | | 1990 |
| Archbishop FitzRalph and the Friars | Gwynn, Aubrey | Article in Journal | | 1937 |
| 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 James Butler II : catechist to generations at home and abroad | Wallace, Patrick, [Rev.] | Article in Book | | 1989 |
| Archbishop John Baptist Purcell | Forde, R. | Article in Journal | | 1988 |
| Archbishop John MacHale in Irish politics, 1830-50 | Clancy, Deirdre | Article in Journal | | 1958 |
| Archbishop John Thomas Troy (1739-1823) | Keogh, Dáire | Article in Journal | | 1995 |
| Archbishop King and Swift's appointment as dean of St Patrick's | Carpenter, Andrew | Article in Journal | | 1975 |
| Archbishop Leahy and faction fighting | O'Dwyer, Christopher | Article in Journal | | 1989 |
| Archbishop Leahy at the first Vatican Council | O'Neill, John | Article in Journal | | 1963 |
| Archbishop Leahy of Cashel (1806-75) | O'Dwyer, Christopher, Rev. | Thesis | | 1971 |
| Archbishop Malachy O'Quaelly, vicar apostolic of Killaloe, 1620-30; archbishop of Tuam, 1630-45 | Gleeson, Dermot F. | Article in Journal | | 1948 |
| Archbishop Murray, 1768-1852 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1952 |
| 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 Troy (1739-1823) and revolution | Peel, Edmund J., Rev. | Thesis | | 1956 |
| Archbishop Ussher and English Presbyterianism | Knox, R. B. | Article in Journal | | 1964 |
| Archbishop Walsh | Leslie, John Randolph (Shane), 1885–1971 | Article in Book | | 1960 |
| 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 |
| Archbishop William King (1650-1729) : church Tory and state whig? | Richardson, Joseph | Article in Journal | | 2000 |
| Archbishop's Bulkeley's visitation of Dublin, 1630 | | Article in Journal | | 1941 |
| Archbishops Edmund MacGauran and Malachy O'Queely : some circumstances of their deaths | Connellan, M. J. | Article in Journal | | 1948 |
| Archdiocese of Armagh : a history | Murray, Raymond | Monograph or Collective Volume | [s.n.] | 2000 |
| Archdiocese of Tuam : an illustrated history | | Monograph or Collective Volume | Booklink | 2005 |
| Archives of the archdiocese of Boston | Rahill, Peter J. | Article in Journal | | 1959 |
| Ardagh and Tristernagh | McNamee, James Joseph | Article in Journal | | 1943 |
| Ardagh in the sixteenth century : a chapter in diocesan history | McNamee, James | Article in Journal | | 1937 |
| Australia : the influence of the Irish on the history of the church in Australia | Cosgrave, A. P. | Article in Journal | | 1947 |
| Balancing the concerns of church and state : the Archbishops of Dublin, 1181-1228 | Murphy, Margaret | Article in Book | | 1995 |
| Barefaced effrontery : secular and ecclesiastical politics in early twelfth-century Ireland | Candon, Anthony | Article in Journal | | 1991 |
| Bede and the Irish | Thacker, Alan T. | Article in Book | | 1996 |
| Begley's diocese of Limerick | Irwin, Liam | Article in Journal | | 1994 |
| Belach Conglais and the diocese of Cork, AD 1111 | Candon, Anthony | Article in Journal | | 1989 |
| Benedictine bishops in medieval Ireland | Varebeke, H. J. de | Article in Book | | 1967 |
| Between reformation and enlightenment : Presbyterian clergy, religious liberty and intellectual change | Coffey, John | Article in Book | | 2013 |
| Bibliography of articles written by Rev. John Brady, diocesan historian, Co. Meath | | Article in Journal | | 1960 |
| Bishop Barrett and King Richard III | O'Neill, Thomas Patrick | Article in Book | | 1991 |
| Bishop Bramhall's replies to queries raised by commissioners concerning the temporalities of Derry diocese | | Article in Journal | | 1943 |
| Bishop Cornelius Egan's diocesan reports to Rome | O'Shea, Kieran | Article in Journal | | 1979 |
| Bishop Francis Moylan | O'Farrell, Josephine | Thesis | | 1974 |
| Bishop J. Stock of Killala and Achonry - 1798-1810 | Coote-Duggan, John | Article in Journal | | 1983 |
| Bishop John Brenan, the intimate of Blessed Oliver | Power, P. | Article in Book | | 1937 |
| Bishop John Keys O'Doherty 1889-1907 | Canning, B. J. (Bernard J.) | Article in Journal | | 2006 |
| 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 Mant's years in Killaloe, 1820-1823 | Kierse, Sean | Article in Journal | | 1982 |
| 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 Montgomery's survey of the bishoprics of Derry, Raphoe and Clogher | | Article in Journal | | 1943 |
| Bishop of the land war : Dr Patrick Duggan, bishop of Clonfert, 1813-1896 | Anonymous | Monograph or Collective Volume | Veritas | 1987 |
| Bishop Patrick McGettigan of Raphoe, 1820-1861 | Canning, B. J. (Bernard J.) | Article in Journal | | 2011 |
| Bishop Robert Walsh, the friars, and Edmund Ignatius Rice, 1817 | Fennessy, Ignatius | Article in Journal | | 1996 |
| Bishop Wheeler's Visitation of Ossory, 1622 | Ó Fearghail, Fearghus | Article in Journal | | 2015 |
| 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 |
| Blessed Oliver Plunkett in Down and Connor | Smyth, J. | Article in Journal | | 1937 |
| Blessed Oliver Plunkett's report on the diocese of Armagh, 1670 | | Article in Journal | | 1959 |
| Blessed Thaddeus MacCarthy and diocese of Ross | Kiely, M. A. | Article in Journal | | 1936 |
| Boniface for the English | Stoclet, Alain J. | Article in Journal | | 2022 |
| Bonifaz und Virgil : Konflikt zweier Kulturen | Ó Néill, Pádraig | Article in Book | | 1985 |
| Brenan, Carew, and their ecclesiastical histories | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| Calendar of ... Scritture riferite nei congressi, Irlanda, in Propaganda archives | | Article in Journal | | 1978 |
| Calendar of Archbishop Alen's register, c.1172-1534; prepared and edited from the original in the registry of the united dioceses of Dublin and Glendalough and Kildare | | Monograph or Collective Volume | | 1950 |
| Calendar of Bray papers | Meagher, Claude | Article in Journal | | 1970 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol. 17 : Alexander VI 1492-1503. Part 2, Vatican registers 1492-1503 with missing letters from other sources | | Monograph or Collective Volume | Irish Manuscripts Commission | 1998 |
| 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 : Papal letters. Vol. 17. Part 1 : Alexander VI, 1492-1503 : Lateran registers | | Monograph or Collective Volume | Irish Manuscripts Commission | 1994 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland, papal letters, vol XX, 1513-1521 | NA | Monograph or Collective Volume | Irish Manuscripts Commission | 2005 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland. Papal letters, vol. 16 ... Lateran registers, part 1 : 1492-1498 | | Monograph or Collective Volume | Stationery Office for the Irish Manuscripts Commission | 1986 |
| 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 the letters of the Butler archbishops of Cashel (1750-92) | Donovan, Imelda | Thesis | | 1970 |
| Calendar of the papers of Dr Bray, archbishop of Cashel and Emly (1792-1820) | Meagher, Claude | Article in Journal | | 1968 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda archives : Part 1, ff 1-102 | Millett, Benignus | Article in Journal | | 1996 |
| Canonical faculties on the Irish mission in the reign of Queen Elizabeth, 1558-1603 | Jones, F. M. | Article in Journal | | 1953 |
| Canterbury and Armagh, 1443-1456 | Foss, D. B. | Article in Journal | | 1988 |
| Canterbury's perspective on church reform and Ireland 1070-1115 | Brett, Martin | Article in Book | | 2006 |
| 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 Manning : a biography | Gray, Robert | Monograph or Collective Volume | [s.n.] | 1985 |
| Cardinal Patrick O'Donnell and Scotland | Canning, B. J. (Bernard J.) | Article in Journal | | 2001 |
| Cashel & Emly heritage | Skehan, Walter G. | Monograph or Collective Volume | Abbey Books | 1993 |
| Cashel diocesan archives | Tierney, Mark | Article in Book | | 1989 |
| Cataldus Racha, a study in the early history of diocesan episcopacy in Ireland | Hennig, John | Article in Journal | | 1946 |
| Catalogue of Irish material in fourteen volumes of the Scritture originali riferite nelle congregazioni generali in Propaganda archives | | Article in Journal | | 1969 |
| Catalogue of manuscripts in possession of the Representative Church Body, ... Dublin | Leslie, J. B. (James Blennerhassett) | Monograph or Collective Volume | | 1938 |
| Cathedral and monastic office in Ireland | Curran, Michael | Article in Journal | | 1978 |
| Charles McNally : O'Connellite bishop, reforming pastor | Kerr, Donal A. | Article in Journal | | 1982 |
| Charles McNally, Maynooth professor and bishop of Clogher | Kerr, Donal A. | Article in Journal | | 1981 |
| Christ Church in the later medieval Irish world, 1300-1500 | Lydon, James F. | Article in Book | | 2000 |
| Christian citizens : the Catholic church and radical politics 1790-1800 | Keogh, Dáire | Article in Book | | 1997 |
| Chronicle : installation of the most Reverend Cahal Brendan Daly as archbishop of Armagh and primate of all Ireland | Anonymous | Article in Journal | | 1991 |
| Church and state in medieval Ireland : the case of Aderrig, county Dublin | Smith, Charles | Article in Journal | | 2002 |
| Church government in the south of Ireland, A.D. 1471 to 1484 | Collins, J. T. | Article in Journal | | 1957 |
| Church organisation in Ireland, A.D. 650 to 1000 | Etchingham, Colmán | Monograph or Collective Volume | Laigin Publications | 1999 |
| Church, state and society | Keogh, Dermot | Article in Book | | 1988 |
| Church-government and the spread of Christianity in Ireland | Dumville, David N. | Article in Book | | 1993 |
| Clerical indiscipline and ecclesiastical authority in Ireland, 1690-1750 | O'Flaherty, Eamon | Article in Journal | | 1992 |
| Clogher in Celtic and Anglo-Norman Ireland | Connolly, A. G. | Article in Book | | 1940 |
| Clogher parish : some early sidesmen, 1662-1734 | Johnston, Jack | Article in Journal | | 1991 |
| 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 |
| Clonard as a diocesan town | Hickey, Elizabeth | Article in Journal | | 1999 |
| Clones and her neighbours in the early period : hints from some Airgialla saints' lives | McCone, Kim | Article in Journal | | 1984 |
| Clonmacnois and the 12th century synods | Ó Maoleachlainn, Pádraig I. | Article in Journal | | 1974 |
| Clonmacnois as a diocese | MacNamee, James Joseph | Article in Journal | | 1945 |
| Coarbs and erenachs north-west Ulster in the seventeenth century | Finegan, Cajetan | Article in Journal | | 1948 |
| Colum Cille and the diocese of Derry | Lacey, Brian | Article in Book | | 2000 |
| Columbanus 'ad locum': The establishment of the monastic foundations | O'Hara, Alexander | Article in Journal | | 2015 |
| Conformity and radicalism within the Catholic church : the case of the Northern Ireland crisis | McElroy, Gerald | Article in Book | | 1991 |
| Convenants and constitutions in Irish Baptist churches | Thompson, Joshua | Article in Journal | | 1989 |
| Convention of Drumceatt, 575: XIVth centenary 1975 | Barbour, Liam M.Boyd, Hugh AlexanderClarke, WallaceClayden, Stanley C.Moore, R. DenholmMorton, T. RalphRoemmele, Peter M.Seymour, A. N.Simms, George OttoWalsh, John R. | Monograph or Collective Volume | | 1975 |
| Conversion to Christianity | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2003 |
| Conversion, church and cathedral : the diocese of Dublin to 1152 | Clarke, Howard B. | Article in Book | | 2000 |
| Cork : a diocesan history | Bolster, Angela | Article in Journal | | 1973 |
| Cork with Ross, A.D. 1199 | Ó Foghludha, Risteárd | Article in Journal | | 1952 |
| Correspondence of Abp Carpenter, with BP Sweetman of Ferns | Curran, Michael | Article in Journal | | 1956 |
| Councils and synods of the Gaelic early and central Middle Ages | Dumville, David N. | Monograph or Collective Volume | University of Cambridge, Department of Anglo-Saxon, Norse, and Celtic | 1997 |
| Count Ó Donel proposes a coadjutor for the see of Raphoe, 1777 | O'Donnell, Terence | Article in Journal | | 1954 |
| Cuairt an Ard-easbaig Cróc ar Thír Chonaill (1891) | Ó Baoighill, Pádraig | Article in Journal | | 2006 |
| Dagger John : Archbishop John Hughes and the Making of Irish America | Loughery, John | Monograph or Collective Volume | Cornell University Press | 2018 |
| Dandys, luggers, herring and mackerel : a local study in the context of the Irish Sea fisheries in the nineteenth century | McCaughan, Michael | Article in Book | | 1989 |
| 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 |
| Das Papsttum und die bayerische Kirche - Bonifatius als Gegenspieler Virgils | Schmidinger, Heinrich | Article in Book | | 1985 |
| 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 |
| Death comes to the archbishop | Dempsey, Anthony | Article in Journal | | 1939 |
| Decrees of a Meath diocesan synod, 1686 | | Article in Journal | | 1957 |
| Deoise Ard Mhacha sa dara céad déag | Ó Ciobháin, Breandán | Article in Journal | | 1978 |
| Deoisí na hÉireann i ndiaidh Shionaid Cheanannais, 1152 - Téacsanna | Ó Ciobháin, Breandán | Article in Journal | | 1973 |
| Deoisí na hÉireann i ndiaidh Shionaid Cheannannais, 1152 - foinsí éagsúla | Ó Ciobháin, Breandán | Article in Journal | | 1973 |
| Deoisí na hÉireann i ndiaidh Shionaid Cheannannais, 1152 - nótaí téacsa | Ó Ciobháin, Breandán | Article in Journal | | 1973 |
| Deoisí na hÉireann i ndiaidh Shionaid Cheannannais, 1152 - Téacsanna | Ó Ciobháin, Breandán | Article in Journal | | 1973 |
| Dependent or independent? The Church of Ireland and its colonial context, 1536-1649 | Ford, Alan, 1956- | Article in Journal | | 1995 |
| Derry : an outline history of the diocese | Bonner, Brian | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1982 |
| Derry diocese on the eve of the plantation | Jefferies, Henry A. | Article in Book | | 1999 |
| Derry, Iona, England and the governance of the Columban church | Dumville, David N. | Article in Book | | 1999 |
| Dhá athchuinge as Achaidh Chonaire | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1961 |
| Dictionary of the American hierarchy (1789-1964) | Code, J. B. | Monograph or Collective Volume | Wagner | 1964 |
| Did Bishop Malchus of Waterford resign because of the Synod of Raithbreasail? | O'Connor, Dónal | Article in Journal | | 2012 |
| Die Entstehung der Kathedrale | Sedlmayer, Hans | Monograph or Collective Volume | Atlantis-Verlag | 1950 |
| Diocesan anomalies (the diocese of Connor) | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1939 |
| Diocese of Armagh : sources and problems | Ó Fiaich, Tomás | Article in Journal | | 1955 |
| 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 Meath : historical sketch | Mills, Thomas | Article in Book | | 1938 |
| Diocese of Raphoe, 1773-1805 | Silke, John J. | Article in Journal | | 1985 |
| Disestablishment – in the nick of time | Milne, Kenneth | Article in Journal | | 2019 |
| Dive Downes' journal in Carbery | Downes, Dive | Article in Journal | | 2010 |
| Documents concerning the Collegium Pastorale Hibernicum of Louvain, 1624 | | Article in Journal | | 1951 |
| Documents concerning the diocese of Meath | | 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 |
| Dominic Maguire, O. P. Archbishop of Armagh : 1684-1707 | Fenning, Hugh | Article in Journal | | 1999 |
| Dr Charles McNally's 'Relationi Status', October 1853 | Anonymous | Article in Journal | | 1989 |
| Dr Cullen's appointment to Armagh 1849 | Macaulay, Ambrose | Article in Journal | | 1980 |
| 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 Louis O'Donnell (1737-1811), first bishop of Newfoundland | O'Connell, Philip | Article in Journal | | 1965 |
| Dr James Magauran, bishop of Ardagh (1815-29) | Traynor, Owen | Article in Journal | | 1972 |
| Dr John Carpenter, archbishop of Dublin, 1760-86 | Mac Giolla Phádraig, B. | Article in Journal | | 1976 |
| Dr Mannix | Brennan, Niall | Monograph or Collective Volume | Angus & Robertson | 1965 |
| Dr. Plunkett, bishop of Meath, 1779-1827 | Flood, J. M. | Article in Journal | | 1949 |
| Dromore diocese, historical notes | | Monograph or Collective Volume | [s.n.] | 1939 |
| Dublin diocesan archives | Curran, Michael | Article in Journal | | 1958 |
| Dublin diocesan archives - Hamilton papers (1) | Purcell, Mary | Article in Journal | | 1988 |
| 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 (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 (4) | Purcell, Mary | Article in Journal | | 1984 |
| Dublin diocesan archives : Murray Papers (6) | Purcell, MarySheehy, David C. | Article in Journal | | 1986 |
| Dublin diocesan archives : Murray papers, 5 | Purcell, Mary | Article in Journal | | 1985 |
| Dunfanaghy's Presbyterian congregation and its times | MacArthur, C. W. P. | Monograph or Collective Volume | NA | 1978 |
| Early churches in the Faughan River valley, County Derry | Jefferies, Henry A.Johnston, Ethna | Article in Book | | 2000 |
| Early Irish church history : a bibliography | McLaughlin, Joseph | Article in Journal | | 1992 |
| Early Irish church organisation : the case of Drumlease and the Book of Armagh | Etchingham, Colmán | Article in Journal | | 2001 |
| Ecclesia Hibernicana : die Synode von Inis Pádraig im Jahre 1148 | Immenktter, H. | Article in Journal | | 1985 |
| Ecclesiastical antiquities of Down, Connor, and Dromore, consisting of a taxation of those dioceses compiled in the year MCCCVI | Dunlop, EullReeves, William | Monograph or Collective Volume | Braid Books|Moyola Books | 1992 |
| Ecclesiastical appointments in Ireland, Aug. 1643 - Dec. 1649 | Jennings, Brendan | Article in Journal | | 1959 |
| Ecclesiastical justice and the enforcement of the reformation : the case of Archbishop Browne and the clergy of Dublin | Murray, James | Article in Book | | 1995 |
| Ecclesiastical structural reform in Ireland and Scotland in the eleventh and twelfth centuries | Miller, Karen E. | Thesis | | |
| Educated clergy in medieval Leighlin | O'Brien, Niuall C.E.J. | Article in Journal | | 2020 |
| Edward Thomas O'Dwyer | Rushe, John | Article in Journal | | 1981 |
| Empire, religion and revolution in early Virginia, 1607-1786 | Bell, James | Monograph or Collective Volume | | 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 appointments and ecclesiastical gravamina during Prince Edward's lordship of Ireland | O'Brien, Alphonsus | Thesis | | 1961 |
| Episcopal decision-making in Ireland | Keogh, Dermot | Article in Book | | 1992 |
| Episcopal visitations of the dioceses of Cloyne and Ross, 1785-1828 [with index] | Derr, Eric A. | Article in Journal | | 2013 |
| Episcopi vagantes in church history | MacDonald, A. J. | Article in Journal | | 1940 |
| Ethnic tensions, episcopal leadership and the emergence of the twentieth century American Catholic church : the Cleveland experience | Leonard, Henry B. | Article in Journal | | 1985 |
| Explaining parochial and diocesan boundaries | Cullen, Seamus | Article in Book | | 1999 |
| Extracts from some issues of 'Archivium Hibernicum' and 'Collectanea Hibernica' concerning Killala diocesan affairs up to 1800 | MacHale, Edward | Article in Journal | | 1989 |
| Extracts relating to Co. Louth from the Calendar of the register of Primate Nicholas Fleming | Gwynn, Aubrey | Article in Journal | | 1949 |
| 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 |
| Fall from grace | Broderick, Joe | Monograph or Collective Volume | Brandon | 1992 |
| Father John Hennessy, P.P. : 'Protestant priest' | Hyland, Cecil | Article in Journal | | 1988 |
| Father Tom : an authorised portrait of Cardinal Tomás Ó Fiaich | Fitzgerald, B. | Monograph or Collective Volume | Fount | 1990 |
| Ferns | Grannell, Fergal | Article in Journal | | 1967 |
| Ferns | Furlong, Nicholas | Article in Book | | 1999 |
| Fifteenth-century Irish provincial legislation and pastoral care | Burrows, M. A. J. | Article in Book | | 1989 |
| Fitzpatrick's Boston, 1846-1866 : John Bernard Fitzpatrick, third bishop of Boston | O'Connor, Thomas H. | Monograph or Collective Volume | Northeastern UP | 1984 |
| Florence Conry, archbishop of Tuam | Jennings, Brendan | Article in Journal | | 1949 |
| Florence Conry, Archbishop of Tuam, 1608–1629 | Neary, J. | Article in Journal | | 1911 |
| Fr Robert O'Keeffe, parish priest, and the Callan controversy 1869-81 | Hogan, Patrick | Article in Book | | 1990 |
| Fragmenta Rapotensiana : contributions towards a diocesan dictionary | Ó Canann, Tomás | Article in Journal | | 1996 |
| Francis Makemie (c.1657-1708) : father of American Presbyterianism | Kirkpatrick, Laurence S. | Article in Book | | 2015 |
| From Hiberno-Norse to Anglo-Norman, c.1030-1300 | Kinsella, Stuart | Article in Book | | 2000 |
| From Tuam to Ballyspellan | Ó Fearghail, Feargus | Article in Journal | | 1987 |
| Frontiers in the Irish church - regional and cultural | Simms, Katharine | Article in Book | | 1995 |
| George Brown, archbishop of Dublin, 1536-1554 | Bradshaw, Brendan I., Rev. | Thesis | | 1966 |
| George Joseph Plunkett Browne | Coen, Martin | Article in Journal | | 1978 |
| Germanus and Britain | Hanson, R. P. C. | Article in Journal | | 1985 |
| Gervase of Tilbury’s Irish Bishops | Breeze, Andrew | Article in Journal | | 2004 |
| Geschichte der Irischen Kirche von ihren Anfängen bis zum 12. Jahrhundert | Delius, Walter | Monograph or Collective Volume | Reinhardt | 1954 |
| Gillebert of Limerick : the Prelate's present to the Primate of England | Lucey, John | Article in Journal | | 2006 |
| Gillebert of Limerick: Theorist or Shallow Theologian? | Lucey, John | Article in Journal | | 2011 |
| God's Irishmen : theological debates in Cromwellian Ireland | Gribben, Crawford | Monograph or Collective Volume | Oxford University Press | 2007 |
| God's river in spate : the story of the religious awakening in Ulster in 1859 | Carson, John T. | Monograph or Collective Volume | Presbyterian Church of Ireland | 1958 |
| Godfrey Day, missionary, pastor and primate : a memoir | Hartford, R. R. | Monograph or Collective Volume | Talbot Press | 1940 |
| 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 |
| Gregory VII and the Irish church | Gwynn, Aubrey | Article in Journal | | 1948 |
| Handlist of Irish diocesan histories | Anonymous | Article in Journal | | 1957 |
| Henry II, the Council of Cashel and the Irish bishops | Flanagan, Marie Therese | Article in Journal | | 1996 |
| Henry Ó Dochartaigh : vicar-general of the diocese of Meath | Bonner, Brian | Article in Journal | | 1980 |
| 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 |
| History and antiquities of the diocese of Ossory | Carrigan, William, 1860-1924 | Monograph or Collective Volume | [s.n.] | 1980 |
| 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 Diocese of Dublin | | Monograph or Collective Volume | Four Courts Press | 2000 |
| History of the diocese of Ardagh | MacNamee, James Joseph | Monograph or Collective Volume | Browne and Nolan | 1954 |
| History of the diocese of Dublin, 1 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1956 |
| History of the ruling eldership in Irish presbyterianism | Barkley, J.M. | Thesis | | 1952 |
| History of west Cork and the diocese of Ross | Holland, William | Monograph or Collective Volume | Southern Star | 1950 |
| How Cashel and Emly were united | Ó Laoí, Cristóir | Article in Journal | | 1990 |
| How the Church of Ireland is organised | Rooke, W. W. L. | Monograph or Collective Volume | A.P.C.K. | 1947 |
| How the diocese of Meath came to be | Walsh, Paul, Revd, 1885-1941 | Article in Book | | 1938 |
| Hugh McMahon, bishop of Clogher, 1707-15, and archbishop of Armagh, 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| Inaugural address delivered by the right rev. Dr. Moran, bishop of Ossory, at the first meeting of the Ossory Archaeological Society, 7th January, 1874 | Moran, Patrick Francis, cardinal, 1830–1911 | Article in Journal | | 1879 |
| Inishmacsaint and a lost diocesan border | Gallagher, Patrick | Article in Journal | | 1953 |
| Ireland and Würzburg in the middle ages | Gwynn, Aubrey | Article in Journal | | 1952 |
| Ireland at the Vatican council. parts 1-2 | Mac Suibhne, Peadar | Article in Journal | | 1960 |
| Ireland's second cardinal, Edward McCabe (1816-1885) | McCabe, Brian | Article in Journal | | 2002 |
| Irish cardinals | Ní Chearbhaill, Maire | Monograph or Collective Volume | Elton Press | 1983 |
| Irish church finances after the disestablishment | Shearman, Hugh | Article in Book | | 1949 |
| Irish clergy and the diocesan church in the 'four obedient shires' of Ireland, c.1400-c.1540 | Booker, Sparky | Article in Journal | | 2014 |
| 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 episcopal meetings, 1788-1882 : a juridico-historical study | Cannon, Sean | Monograph or Collective Volume | Pontifical University | 1979 |
| Irish episcopal temporalities in the 13th century | Cosgrove, Art | Article in Journal | | 1974 |
| Irish episcopal temporalities in the thirteenth century | Cosgrove, Art | Article in Journal | | 1974 |
| Irish Franciscan archbishop of Dublin : Thomas Fleming, 1623-1655 | Barrett, Fergus | Article in Journal | | 1941 |
| Irish tithes in British politics | Brynn, Edward | Article in Journal | | 1970 |
| Is iad is abhar glóirithe dom | Ó Láimhín, Peadar | Article in Book | | 2000 |
| Italian merchant bankers and the collection of papal revenues in Ireland in the thirteenth century | O'Sullivan, M. D. (Mary Donovan) | Article in Journal | | 1947 |
| James Alypius Goold, O.S.A., first archbishop of Melbourne | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1988 |
| James Charles McGuigan : first cardinal from English Canada | McGuigan, Peter | Article in Book | | 1988 |
| James Duhig | Boland, T. P. | Monograph or Collective Volume | University of Queensland Press | 1986 |
| 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 the creation of an Irish protestant identity | Ford, Alan, 1956- | Article in Book | | 1998 |
| James Ussher, archbishop of Armagh | Knox, Robert Buick | Monograph or Collective Volume | | 1967 |
| John Allen Fitzgerald Gregg, archbishop | Seaver, George | Monograph or Collective Volume | Faith P.|Hodges Figgis | 1963 |
| John Cardinal McCloskey | Mullan, Desmond | Article in Journal | | 1979 |
| John Colton, justiciar of Ireland (1382) and archbishop of Armagh (1383-1404) | Watt, J. A. | Article in Book | | 1981 |
| John Foxholes Franciscan Archbishop of Armagh 1471-74 | Millett, Benignus | Article in Journal | | 1999 |
| John Lynch's history of the Irish bishops | Brady, John, d.1963 | Article in Journal | | 1945 |
| 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 McHale and John MacEvilly : conflict in the nineteenth- century Catholic hierarchy | Bane, Liam | Article in Journal | | 1984 |
| John McHale, Archbishop of Tuam | Lyons, John | Article in Journal | | 1984 |
| John Thomas Troy, Archbishop of Dublin, 1786-1823 : a man of his times | O'Donoghue, Patrick | Article in Book | | 1990 |
| 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 |
| Kilfenora (Feneborensis): a diocese apart | Mac Mahon, Michael | Article in Journal | | 2018 |
| 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 |
| Killala diocese, 1840-45 : the political background | MacHale, E. | Article in Journal | | 1986 |
| Killeshin and Sletty | Comerford, M., P.P. | Article in Journal | | 1883 |
| Kinsale to Benburb - a valuable breathing space in Irish history | Olden, Michael | Article in Book | | 1971 |
| L'hagiographie franconienne dans quelques publications récentes | Coens, Maurice | Article in Journal | | 1953 |
| Laurence O'Toole - the lost leader | Tracy, Frank | Article in Journal | | 2006 |
| Lecture on the history of Ardagh | McNamee, James Joseph | Article in Journal | | 1940 |
| Leighlin diocese : its ancient boundaries and divisions | O'Toole, Edward | Monograph or Collective Volume | St Mary's College, Knockbeg | 1936 |
| Leon an Iarthair : aisti ar Sheán Mac Héill, Ardeaspag Thuama 1834-1881 | | Monograph or Collective Volume | Clóchomhar | 1983 |
| Les diocèses d'Irlande jusqu'au XVe siècle | Millett, Benignus | Article in Journal | | 1985 |
| Letter of Pope Innocent VIII, 4 December 1488 | Anonymous | Article in Book | | 1991 |
| Lewis Prytherch's manuscript | | Article in Journal | | 1945 |
| Life of Blessed Oliver Plunkett, archbishop of Armagh (1625-1681) | Stokes, John F. B. | Monograph or Collective Volume | Catholic Truth Society | 1954 |
| Life of St Finbarr : founder and patron of the city and diocese of Cork | O'Brien, C. M. | Monograph or Collective Volume | Killarney Printing Works | 1985 |
| Life of St Lawrence O'Toole, archbishop of Dublin, 1128-1180 | Legris, Albert | Monograph or Collective Volume | Catholic Truth Society | 1914 |
| Limerick, Killaloe, and Kells, 1194-1250 | | Article in Journal | | 1977 |
| Locating "Mag itir dá glais": a church site in Machae | Ó Mainnín, Mícheál B. | Article in Journal | | 2010 |
| Mael Muire Ua Dúnáin (1040-1117), reformer | Ó Corráin, Donnchadh | Article in Book | | 1983 |
| Manx church origins | Dugdale, D. S. | Monograph or Collective Volume | Llanerch | 1998 |
| Marginalia in Bishop Downham's 'description of the diocese of Derry' | | Article in Journal | | 1943 |
| Mary Aikenhead (1787-1858), servant of the poor : founder of the Religious Sisters of Charity | Blake, Donal | Monograph or Collective Volume | Caritas | 2001 |
| Matthew Gibney (1837-1925), bishop of Perth, Western Australia | Mitchell, Kilian J. | Article in Journal | | 2001 |
| 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 Peter MacMahon : bishop of Killaloe, June 5, 1765 - Februray 20, 1807 | Clancy, J. J. | Article in Journal | | 1940 |
| Michael, Cardinal Logue, 1840-1924 | Walsh, Aisling | Thesis | | 1996 |
| Miscellaneous documents : 2, 1625-40 | | Article in Journal | | 1949 |
| Mister, are you a priest? : jottings by Bishop Edward Daly | Daly, Edward | Monograph or Collective Volume | Four Courts | 2000 |
| Mit dem hl. Virgil durch die Jahrhunderte der Kunst | Locicnik, Raimund A. | Article in Book | | 1985 |
| 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 |
| Mr Craghead takes communion | Gillespie, Raymond | Article in Book | | 2012 |
| MS material for diocesan and parochial history : report on the collections of sources : 2 | Ó Fiaich, Tomás | Article in Journal | | 1955 |
| MS material for diocesan and parochial history, report on collections of sources : 1 | Representative Church Body, Dublin | Article in Journal | | 1954 |
| Muircheartach Ó Domhnalláin, easbog Chluain Fearta, 1695-1706 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1953 |
| Murchú's Armagh | Lynn, C. J.McDowell, J. A. | Article in Journal | | 1988 |
| Naas: an historical sketch | Comerford, M., P.P. | Article in Journal | | 1883 |
| Nicholas Conaty, bishop of Kilmore, (1865-1886) | Kelly, Gabriel | Article in Journal | | 1987 |
| Nicholas Mac Maol Íosa, archbishop of Armagh (1272-1303) | Gwynn, Aubrey | Article in Book | | 1995 |
| Ninety candidates proposed for Irish dioceses, c. 1665 | Millett, Benignus | Article in Journal | | 1955 |
| No words can tell our sorrow. A tribute to the late Cardinal Ó Fiaich | Kearns, Patrick | Article in Journal | | 1990 |
| Nóta fán triúr príomháid de mhuintir Mhic Mhathghamhna | Ó Maolagáin, Pádraig | Article in Journal | | 1947 |
| Notes & Documents. Ecclesiastical affairs in Armagh in the ninth and tenth centuries | Mac Airt, Seán | Article in Journal | | 2015 |
| Notes of the history of the diocese of Dromore | Keenan, Patrick | Article in Journal | | 1989 |
| Oilibhéar Pluincéid | Ó Fiaich, Tomás | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1976 |
| Old Leighlin after Laserian : division and reconciliation | Kenny, Colum | Article in Journal | | 1999 |
| Origins of the diocese of Kilmore | Gwynn, Aubrey | Article in Journal | | 1961 |
| Pagans and holy men : literary manifestations of twelfth-century reform | Ní Mhaonaigh, Máire | Article in Book | | 2006 |
| Papal letters and Irish clergy : Clogher before the Reformation | Jefferies, Henry A. | Article in Book | | 2005 |
| Papal primacy then and now | O'Connell, Patrick | Article in Book | | 1970 |
| Parish bounds in the Kildare diocese | Gleeson, Dermot F. | Article in Journal | | 1949 |
| Parish, pastoral care and 'tuath' in the diocese of Limerick, c. 1201 | MacCotter, Paul | Article in Journal | | 2013 |
| Parochial development in the deanery of Ardagh | Dove, Michael R. | Article in Journal | | 1990 |
| Partition, the Catholic church and the diocese of Clogher, c.1912-1928 | Phoenix, Eamon | Article in Book | | 2005 |
| Pastoral care before the parish | | Monograph or Collective Volume | | 1992 |
| Patrick Cardinal O'Donnell | Silke, John J. | Article in Journal | | 1988 |
| Patrick Kelly bishop of Richmond | Keane, Frank | Article in Journal | | 2004 |
| Patrick MacMahon, bishop of Killaloe, 1829-1836 | Clancy, John | Article in Journal | | 1941 |
| Paul cardinal Cullen and the shaping of modern Irish nationalism | Bowen, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| 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 |
| People, priests and prelates : ecclesiastical democracy and the tensions of trusteeism | Carey, Patrick | Monograph or Collective Volume | # | 1987 |
| People, priests and prelates : ecclesiastical democracy and the tensions of trusteeism | Casey, Patrick | Monograph or Collective Volume | University of Notre Dame Press | 1987 |
| Peter Browne, devotional writer of the eighteenth century : bishop of Cork, 1710-1735 | Jackson, Robert Wyse | Monograph or Collective Volume | A.P.C.K. | 1963 |
| Peter McLaughlin Raphoe and Derry 1760-1840 | Donnelly, Philip | Article in Journal | | 2006 |
| Philip MacDevitt, bishop of Derry, 1766-97 | Donnelly, Philip | Article in Journal | | 2007 |
| 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 |
| Poem in praise of John Cantwell, archbishop of Cashel, 1452-82 | | Article in Journal | | 1962 |
| Pope Clement XI and the British Isles : the inventory of Fondo Albani 163-168 | Burns, C. S. (Charles S.) | Article in Book | | 1991 |
| Pope Innocent III and Ireland | Dunning, Patrick J., Rev. | Thesis | | 1960 |
| Pope Innocent III and Ireland : some unnoticed letters | Dunning, P. J. | Article in Journal | | 1945 |
| Power, politics and parish formation in the medieval cantred of Ardnurcher: 1172-1690 | Masterson, Rory | Article in Journal | | 2011 |
| Presbyterian history in Ireland : two seventeenth-century narratives | | Monograph or Collective Volume | Ulster Historical Foundation | 2016 |
| Priests and prelates of Armagh in the age of reformations, 1518-1558 | Jefferies, Henry A. | Monograph or Collective Volume | Four Courts | 1997 |
| Primate Alexander | Neely, R. G. | Article in Book | | 1999 |
| Primate Alexander, archbishop of Armagh, a memoir | | Monograph or Collective Volume | [s.n.] | 1913 |
| Primate George Dowdall and the Marian restoration | Jefferies, Henry A. | Article in Journal | | 1998 |
| Primatus Dublinensis : the primacy of the see of Dublin, or a compendium of the arguments on which the see of Dublin relies, for the enjoyment and prosecution in its own right of the primacy of Ireland | Talbot, Peter | Monograph or Collective Volume | Church of Ireland Printing and Publishing Co. | 1947 |
| Prince Hohenlohe, Signor Pastorini and miraculous healing in early nineteenth-century Ireland | Geary, Laurence M. | Article in Book | | 1999 |
| Prolegomena to a reappraisal of early Christianity in Man relative to the Irish Sea Province | Shaw, R. Cunliffe | Article in Journal | | 1967 |
| Pseudo-Dionysius, Gilbert of Limerick and Innocent III : order, power and constitutional construction | Williamson, Shannon M. O. | Article in Book | | 2006 |
| Questing in Derry diocese 1849-1850 | Canning, B. J. (Bernard J.) | Article in Journal | | 1979 |
| Re-organisation of the dioceses of Kilfenora, Kilmacduagh, Galway and Killaloe, 1852-1883 | Murphy, Ignatius | Article in Journal | | 1984 |
| Réamonn Ó Gallachair, bishop of Derry | Bonner, Brian | Article in Journal | | 1974 |
| Records of the general synod of Ulster, 1691-1820 | Anonymous | Monograph or Collective Volume | [s.n.] | 1890 |
| Reflections of a Newry-born priest who was secretary to three pontiffs | Magee, John | Article in Journal | | 1989 |
| 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 |
| Registrum Iohannis Mey : the register of John Mey, archbishop of Armagh, 1443-56 | | Monograph or Collective Volume | HMSO | 1972 |
| Report of Bishop McDonagh, 1741 | McDonagh, Michael | Article in Journal | | 1965 |
| Revisiting reform : Armagh and Derry in the twelfth century | Ó Doibhlin, Ciarán | Article in Journal | | 2004 |
| Richard Arthur, bishop of Limerick | Moloney, Michael | Article in Book | | 1951 |
| Richard Ledrede, bishop of Ossory - towards a new assessment | Brennan, James | Article in Journal | | 1998 |
| Riding against the clock : the visitations of Edward Tenison in Carmarthen and Ossory in the early eighteenth century | Guy, John R. | Article in Book | | 1999 |
| Roots of Presbyterianism in Donegal, 1 : The Laggan and its Presbyterianism; 2 : In the days of the Laggan Presbytery. (The Laggan Presbytery books, 1, 2). 2 vols. | Lecky, A. G. | Monograph or Collective Volume | | 1905 |
| Roscommon : an independent dioceses and a separate kingdom | Anonymous | Article in Journal | | 1992 |
| Ross Union of parishes | Peters, Christopher | Article in Journal | | 2000 |
| Rotulus pipae Clonensis | | Monograph or Collective Volume | | 1859 |
| Saint Colman of Cloyne | Halliden, Patrick | Article in Book | | 1994 |
| Saint Laurence O'Toole, archbishop of Dublin | Howlett, Liam | Article in Journal | | 1971 |
| Saint Laurent O'Toole, archevêque de Dublin | Legris, Albert | Monograph or Collective Volume | [s.n.] | 1908 |
| Saint Malachy, the Gill abbey of Cork, and the rule of Arrouaise | O'Sullivan, DenisWalsh, T. J. | Article in Journal | | 1949 |
| Saints in the catalogue of bishops of the lost 'Register of Clogher' | Ó Riain, Pádraig | Article in Journal | | 1992 |
| Scattery : an unknown part of the diocese of Limerick | Newman, Jeremiah | Article in Journal | | 1992 |
| 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 |
| 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: W. E. Gladstone, 'Parliamentary Doings with the Irish Church' | Gladstone, William Ewart, 1809-1898 | Article in Journal | | 2018 |
| Serfs and Citizens: the church tenants of medieval Armagh | Simms, Katharine | Article in Journal | | 2021 |
| Servants of Christ : a short history of the bishops of Derry since the reformation, 1605-1995 | Orr, J. C. D. | Monograph or Collective Volume | A.P.C.K. | 1997 |
| Sliabh Larga and Cuaille Ciannachta in the synod of Rath Breasail | Ó Maolagáin, Pádraig | Article in Journal | | 1947 |
| Some account of the parish of Graig-na-managh | Comerford, M., P.P. | Article in Journal | | 1883 |
| Some aspects of the life of Doctor John Thomas Troy, O. P., 1739-1823 | Peel, H. E. | Article in Journal | | 1957 |
| Some civil and ecclesiastical territorial divisions and their geographical significance | Nolan, William | Article in Book | | 1986 |
| Some Irish ecclesiastical titles in the tenth and eleventh centuries | Gwynn, Aubrey | Article in Journal | | 1942 |
| Some notes concerning the terrier or ledger book of Down and Connor which relate to the northern and eastern parts of Connor diocese | | Article in Journal | | 1990 |
| Some notes on Killala Diocese | Neary, J. | Article in Journal | | 1913 |
| Some papers of Henry Hughes, O.F.M., vicar apostolic of Gibraltar, 1839-56 | Ó Huallacháin, Maelísa | Article in Journal | | 1998 |
| Some parish priests of the diocese of Killaloe and some puzzles of local history | Anonymous | Article in Journal | | 1939 |
| Some problems concerning the organization of the Church in early medieval Ireland | Sharpe, Richard | Article in Journal | | 1984 |
| Some recent contributions to Cork diocesan history | Collins, John T. | Article in Journal | | 1951 |
| Sources for early modern Irish history 1534-1641 | Edwards, R. W. D. (Robert Walter Dudley)O'Dowd, Mary | Monograph or Collective Volume | Cambridge University Press | 1985 |
| St Ailbe's heritage : a guide to the history, genealogy and towns of the Archdiocese of Cashel and Emly | Tipperary Heritage Unit | Monograph or Collective Volume | Tipperary Heritage Unit | 1999 |
| St Albert, patron of Cashel : a study in the history of diocesan episcopacy in Ireland | Hennig, John | Article in Journal | | 1945 |
| St Patrick, Skerries and the earliest evidence for local church organization in Ireland | Swift, Catherine | Article in Book | | 2004 |
| 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 |
| 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 |
| Statement with reference to the efforts made to revive the ancient Bishoprick of Clogher | | Monograph or Collective Volume | W.&G. Baird | 1884 |
| Steps on my pilgrim journey : memories and reflections | Daly, Cathal B. | Monograph or Collective Volume | Veritas | 1998 |
| Strabane in the wider world - famous people from the area | Bradley, Jim | Article in Book | | 2000 |
| Survivals of organisation of the early Irish church in late medieval and early modern Irish society | Barry, John | Thesis | | 1949 |
| Sword and mitre : government and episcopate in France and England in the age of aristocracy | Ravitch, Norman | Monograph or Collective Volume | | 1966 |
| Sylvester Lloyd, O.F.M., bishop of Killaloe, 1728-1739 | Murphy, Ignatius | Article in Journal | | 1987 |
| Synod of Rathbreasail | Anonymous | Article in Journal | | 1986 |
| Tadhg Mac Eochaidh, easbog Chluain Fearta, 1678-1687 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1944 |
| Ten documents relating to Irish diocesan affairs, 1740-84, from Franciscan Library, Killiney | Giblin, Cathaldus | Article in Journal | | 1978 |
| The 'Processus Datariea' and the appointment of Irish bishops in the seventeenth century | Giblin, Cathaldus | Article in Book | | 1957 |
| The 20th century : an age of change and challenge | Forde, Walter | Article in Book | | 1999 |
| The act book of the Armagh diocese, 1518-22: a text and introduction | McCafferty, John | Thesis | | 1992 |
| The activities and personnel of the general committee of the Catholics of Ireland, 1767-84 | MacGeehin, Maureen | Thesis | | 1952 |
| The administration of John Bole, archbishop of Armagh, 1447-1471 | Lynch, Anthony | Article in Journal | | 1991 |
| The administration of the diocese of Dublin during the eighteenth century | Kennedy, Raymond Thomas | Thesis | | 1970 |
| The adventures of Milo Sweteman, archbishop of Armagh 1361-1380 | Smith, Brendan, 1963- | Article in Journal | | 1996 |
| The advowson of the chapel of St. John of Kilbridge Co. Meath | Butler, Theobald Blake | Article in Journal | | 1982 |
| The alliance between church and state in early medieval Alba | Veitch, Kenneth | Article in Journal | | 1998 |
| The ancient see-lands of the bishop of Cork in the northern suburbs | Ó Buachalla, Liam | Article in Journal | | 1965 |
| The annals of John de Pembridge as a source for the history of Dublin and its hinterland | Williams, Bernadette | Article in Book | | 2023 |
| 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 Catholic Bishops to Killaloe Diocese, 1819-50 | Murphy, Ignatius | Article in Journal | | 1983 |
| The appointment of Coabh and Erenagh | Barry, J. G. | Article in Journal | | 1960 |
| The appointment of coarb and erenagh | Barry, J. G. | Article in Journal | | 1960 |
| The appointments of Patrick Curtis and Thomas Kelly as archbishop and coadjutor archbishop of Armagh | Macaulay, Ambrose | Article in Journal | | 1982 |
| The archbishop and citizens of Dublin during Hugh de Lacy's Irish rebellion, 1223-4 | Brown, Daniel J. F. | Article in Book | | 2016 |
| The archbishops and administration of the diocese and province of Dublin, 1181-1298 | Murphy, Margaret | Thesis | | 1987 |
| The archdeacon of Kells | Brady, John, d.1963 | Article in Journal | | 1947 |
| The archdeacons of Armagh 1417-71 | Lynch, A. | Article in Journal | | 1981 |
| The archdeacons of Kells | Brady, John, d.1963 | Article in Journal | | 1947 |
| The archdeacons of Meath | Brady, John, d.1963 | Article in Journal | | 1945 |
| The Armagh diocesan archives | Murray, Raymond | Article in Journal | | 1974 |
| The beginnings of a national protectorate : curial cardinals and the Irish Church in the fifteenth century | Walsh, K. | Article in Journal | | 1974 |
| The beginnings of the Christian Brothers : their relations with various ecclesiastical authorities | Fitzpatrick, J. D. | Article in Journal | | 1962 |
| 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 remembered | Barry, John | Article in Journal | | 1993 |
| The bishops of Ossory from the Anglo-Norman invasion to the present day | Moran, Patrick Francis, cardinal, 1830–1911 | Article in Journal | | 1883 |
| The boundaries of Clogher | Ó Maolagáin, Pádraig | Article in Journal | | 1953 |
| The bounds and extent of Irish parishes | Power, P. | Article in Book | | 1947 |
| 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 Butler archbishops of Cashel | Morris, Thomas | Article in Journal | | 1955 |
| The cardinal and the professor | Boyne, Patricia | Article in Journal | | 1990 |
| The career of John Prene, Archbishop of Armagh, 1439-43 | Lynch, Anthony | Article in Journal | | 2010 |
| The Catholic church in county Kilkenny 1600-1800 | Ó Ferghail, Fearghus | Article in Book | | 1990 |
| The Catholic hierarchy and education, 1898-1908 | Wall, Patrick | Article in Journal | | 1981 |
| The Celtic and Roman traditions : conflict and consensus in the early medieval church | Corning, Caitlin | Monograph or Collective Volume | Palgrave Macmillan | 2006 |
| The Chancellorship of medieval Leighlin | O'Brien, Niall C.E.J. | Article in Journal | | 2019 |
| The choosing of Oliver Kelly for the See of Tuam, 1809-15 | Coen, Martin | Article in Journal | | 1978 |
| The Christianization of Society | Price, Huw | Article in Book | | 2003 |
| The church among two nations : Armagh on the eve of the Tudor reformations | Jefferies, Henry A. | Article in Journal | | 1998 |
| The Church and the Easter Rising | Rafferty, Oliver P. | Article in Journal | | 2016 |
| The church in Dublin : 1940-1965 | Burke Savage, Roland | Article in Journal | | 1965 |
| The church in Gaelic Ireland : thirteenth to fifteenth centuries | Mooney, Canice | Monograph or Collective Volume | Gill & Macmillan | 1969 |
| The church in medieval Ireland | Watt, John A. | Monograph or Collective Volume | University College Dublin Press | 1998 |
| The Church of Ireland Unions of Killinane and Kilconickny, Loughrea County Galway: A History | Kearney, Gerry | Monograph or Collective Volume | The author | 2015 |
| The Church of Ireland: a guide to the United Dioceses of Cashel and Emly, Waterford and Lismore: disestablishment commemoration year 1970 | United Dioceses of Cashel and Emly, Waterford and Lismore | Monograph or Collective Volume | [United Dioceses of Cashel and Emly, Waterford and Lismore] | 1970 |
| The Church since emancipation : Church reorganization | Cunningham, T. P. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Churchwardens’ Accounts of the Parishes of St Bride, St Michael Le Pole and St Stephen, Dublin, 1663–1702 | | Monograph or Collective Volume | Four Courts Press | 2020 |
| The coarb and twelfth-century reform | Barry, J. G. | Article in Journal | | 1957 |
| The coarb in medieval times | Barry, J. G. | Article in Journal | | 1958 |
| The coarb in the mediaeval Irish church (circa 1200-1550) | Seymour, St. John D. | Article in Journal | | 1933 |
| The coarbs of Killaloe diocese | Gleeson, Dermot F. | Article in Journal | | 1949 |
| The constitutions of the diocese of Cashel : "The New Psalter of Cashel" (1737) and three pastoral letters of Archbishop Christopher Butler | | Article in Journal | | 2002 |
| The convention of Druim Ceat (A.U. 575) | Ryan, John | Article in Journal | | 1946 |
| The Convention of Druim Cett | Bannerman, John | Article in Journal | | 1966 |
| The correspondence of Charles Brodrick (1761-1822), archbishop of Cashel | Jenkins, Deborah | Article in Journal | | 1980 |
| The deaneries of St. Patrick's | Lawlor, H. J. | Article in Journal | | 1932 |
| The deanery of Tulach Óg | Ó Doibhlin, Éamon | Article in Journal | | 1971 |
| The development of the church in the Diocese of Ferns in the twelfth and thirteenth centuries | Colfer, Billy | Article in Book | | 1999 |
| 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 Cork and the great western schism | Bolster, M. A. | Article in Journal | | 1966 |
| The diocese of Elphin in 1637 | McGreevy, John | Article in Journal | | 1988 |
| The diocese of Emly | Seymour, St. John D. | Monograph or Collective Volume | | 1913 |
| The diocese of Kerry (formerly Ardfert) | Reidy, Donal A. | Monograph or Collective Volume | Catholic Truth Society | 1937 |
| The diocese of Kerry, formerly Ardfert: working in the fields of God | O'Shea, Kieran | Monograph or Collective Volume | Editions du Signe | 2005 |
| The diocese of Kilmore : bishops and priests, 1136-1988 | MacKiernan, Francis J. | Monograph or Collective Volume | | 1989 |
| The diocese of Kilmore : its history and antiquities | O'Connell, Philip | Monograph or Collective Volume | Browne and Nolan | 1937 |
| The diocese of Kilmore, the Irish college in Paris and Alexander McCabe | Walsh, Micheline | Article in Journal | | 1979 |
| The diocese of Limerick in the twelfth century | Gwynn, Aubrey | Article in Journal | | 1946 |
| The diocese of Meath during the episcopacy of John Cantwell, 1830-1866 | Connell, Paul | Thesis | | 2002 |
| The diocese of Meath in the fifteenth century | French, Noel E. | Article in Journal | | 2012 |
| The diocese of Meath under Bishop John Cantwell, 1830-66 | Connell, Paul | Monograph or Collective Volume | Four Courts | 2004 |
| The disputed primacy of the medieval Irish church | Watt, J. A. | Article in Book | | 1988 |
| The distinction between coarb and erenagh | Barry, J. G. | Article in Journal | | 1960 |
| The duties of coarbs and erenaghs | Barry, J. G. | Article in Journal | | 1960 |
| The early church | Walsh, John R. | Article in Book | | 2000 |
| The early penal days : Clogher under the administration of Hugh MacMahon, (1701-1715) | Jefferies, Henry A. | Article in Book | | 2005 |
| The ecclesiastical structure, 1714-60 | McCracken, J. L. | Article in Book | | 1986 |
| 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 emergence of the metropolitan see : Dublin, 1111-1216 | Mac Shamhráin, Ailbhe | Article in Book | | 2000 |
| The episcopal succession in England, Scotland and Ireland, A.D. 1400 to 1875 | Brady, W. Maziere | Monograph or Collective Volume | Gregg | 1971 |
| 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 Episcopal Union of Armagh and Clogher: a letter to the Earl of Erne from the Primate on the impolicy of dissolving it | Beresford, M. G. | Monograph or Collective Volume | McWatters [printer] | 1881 |
| The Erenagh in the monastic Irish church | Barry, John | Article in Journal | | 1958 |
| The erenagh in the monastic Irish church | Barry, J. G. | Article in Journal | | 1958 |
| 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 Ferns Diocese | Culleton, Edward | Article in Book | | 1999 |
| The evolution of the Catholic parishes in County Wexford [part 1] | Culleton, Edward | Article in Journal | | 2007 |
| The exempt jurisdiction of Newry and Mourne : the struggle for episcopal authority | Rankin, J. Frederick | Article in Journal | | 1998 |
| The extent of Coarb and Erenach in Gaelic Ulster | Barry, J. G. | Article in Journal | | 1960 |
| The family of Comedinus Offercheran, the authority of the Archbishop of Armagh and the dispute over the rectory of Tamlaghtlege, 1414-1449 | Sughi, Mario A. | Article in Journal | | 1996 |
| The first bishops of Dublin | Gwynn, Aubrey | Article in Journal | | 1955 |
| The first chapter act book of Christ Church Cathedral, Dublin 1574-1634 | | Monograph or Collective Volume | Four Courts | 1997 |
| The first Vatican Council, the Papal State and the Irish hierarchy : recent research on the pontificate of Pope Pius IX | Walsh, Katherine | Article in Journal | | 1982 |
| The formation of a parish : the case of Beaulieu, County Louth | Brand, Paul | Article in Book | | 1988 |
| The formation of the diocese | Devlin, Ciarán | Article in Book | | 2000 |
| 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 in 1739 | | Monograph or Collective Volume | | 1980 |
| The future returns : a journey with Columba and Augustine of Canterbury | McMaster, Johnston | Monograph or Collective Volume | Corrymeela Press | 1997 |
| The genesis of the diocese of Clogher | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1917 |
| The genesis of the dioceses of Derry and Raphoe | Lawlor, H. J. (Hugh Jackson), 1860-1938 | Article in Journal | | 1917 |
| The growth and origin of the diocese of Meath | Brady, John, d.1963 | Article in Journal | | 1949 |
| 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 idea of a diocesan history | Gleeson, E. F. | Article in Journal | | 1941 |
| The implications of 'paruchia' | Etchingham, Colmán | Article in Journal | | 1993 |
| The influence of Irish monks on Merovingian diocesan organization | Bittermann, Helen Robbins | Article in Journal | | 1935 |
| The Irish alternative : Scottish and English Presbyterianism in Ireland | Armstrong, Robert | Article in Book | | 2013 |
| 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 Catholic Episcopal Corps, 1657-1829: a prosopographical analysis | Derr, Eric | Thesis | | 2014 |
| The Irish church and the papacy | Corish, Patrick J. | Article in Journal | | 1979 |
| The Irish Church Disestablishment Act (1869) and the general synod of the Church of Ireland (1871) : the art and structure of educational reform | McCormack, Christopher F. | Article in Journal | | 2018 |
| 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 1785-1797 | Fenning, Hugh | Article in Journal | | 1986 |
| The Irish episcopate and pastoral care, 1318-1534 | Burrows, Michael | Thesis | | 1986 |
| The Irish in England and on the Continent in the seventh century: Part I|The Irish in England and on the Continent in the seventh century: Part II | Wood, I.N. | Article in Journal | | 2016 |
| The Irish Presbyterian mind : conservative theology, evangelical experience, and modern criticism, 1830-1930 | Holmes, Andrew R. | Monograph or Collective Volume | Oxford University Press | 2018 |
| The island of St. Patrick : church and ruling dynasties in Fingal and Meath, 400-1148 | | Monograph or Collective Volume | Four Courts | 2004 |
| The Italian connection : the great earl and Archbishop Octavian | Sughi, Mario | Article in Journal | | 1999 |
| The kings of England and papal provisions in fifteenth-century Ireland | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1961 |
| The last years of Bishop T. A. O'Brien, O.P. | Taheny, L. | Article in Book | | 1951 |
| The late medieval diocese of Clogher, c.1200-1480 | Smith, Brendan, 1963- | Article in Book | | 2005 |
| The lay Coarb in medieval times | Barry, J. G. | Article in Journal | | 1959 |
| The legacy of John Bramhall as Laud's alter-ego | Ross, Linda M. | Article in Book | | 1999 |
| The legacy of Newman | Meehan, D. | Article in Journal | | 1946 |
| 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 life and career of Hugh Brady, bishop of Meath, 1563-84 | Walshe, Helen Mary | Thesis | | 1985 |
| 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 Limerick bishop who said no to papal infallibility | Irwin, Liam | Article in Journal | | 1993 |
| The making of medieval Derry | Devlin, Ciaran J. | Monograph or Collective Volume | Veritas | 2013 |
| The man in the middle : St Laurence O'Toole, patron saint of Dublin | Forristal, Desmond | Monograph or Collective Volume | Veritas | 1988 |
| The medieval chapter of Armagh Cathedral | Watt, J. A. | Article in Book | | 1992 |
| The medieval diocese of Meath | Brady, John, d.1963 | Article in Journal | | 1957 |
| The medieval rural dean and rural deanery in Ireland | MacCotter, Paul | Article in Book | | 2015 |
| The monastic hierarchy in twelth century Ireland : the case of Kells | Nic Aongusa, Bairbie | Article in Journal | | 1990 |
| The Monasticon Hibernicum Project : the diocese of Dublin | Mac Shamhráin, Ailbhe | Article in Book | | 2005 |
| The name of the diocese | McKenna, John | Article in Journal | | 1991 |
| The national synod of Thurles (1850) | Barry, P. C. | Article in Journal | | 1956 |
| The Normans and their world | Lindsay, Jack | Monograph or Collective Volume | | 1973 |
| The northern boundary of the archdiocese of Armagh | Ó Ceallaigh, Séamus | Article in Journal | | 1954 |
| The northern dioceses and the Irish College of Alcalá, Spain | O Connell, Patricia | Article in Journal | | 1993 |
| The Nugent family and the diocese of Kilmore in the sixteenth and early seventeenth centuries | Lennon, Colm | Article in Journal | | 2001 |
| 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 office and function of coarb and erenagh in the Irish church | Barry, John | Thesis | | 1952 |
| The organization of the Irish church, 1603-1641 | Corish, Patrick J. | Article in Journal | | 1957 |
| The papacy and episcopal appointments in Ireland, 1305-34 | Williams, Patrick | Thesis | | 1961 |
| The papers of Lord Robert Loftus | Ainsworth, John F. | Article in Journal | | 1960 |
| The papers of Nicholas Archdeacon (bishop of Kilmacduagh and Kilfenora 1800-1823) | Murphy, P. J. | Article in Journal | | 1973 |
| The parish of Inchicronan (Crusheen) | Coffey, Thomas | Monograph or Collective Volume | Ballinakella | 1993 |
| The parish of Kilmeen (Boherbue-Kilkeam) | McCarthy, Louis | Article in Journal | | 1997 |
| The parishes in the diocese of Killala : Tireragh, Erris, south Tirawley, north Tirawley | McHale, Edward | Monograph or Collective Volume | The author | 1985 |
| The paruchia of St. Finbarr | O'Connor, Timothy P. | Thesis | | 1977 |
| The people's primate : a memoir of Joseph Cardinal MacRory | Murphy, J. J. | Monograph or Collective Volume | Priory P. | 1946 |
| The place of the archdiocese of Dublin in the hagiographical tradition of the continent | Hennig, John | Article in Journal | | 1955 |
| The politics of Cardinal McCabe, archbishop of Dublin, 1879-85 | Woods, C. J. (Christopher John) | Article in Journal | | 1973 |
| The popes and the ecclesiastical history of medieval Ireland : critical texts of the papal bulls, 1070-1254, with historical annotations | Sheehy, Maurice P., Rev. | Thesis | | 1960 |
| The post-Reformation bishops of Kerry | O'Ryan, J. C. | Article in Journal | | 1997 |
| The Presbyterian church in Mallow | Rutherford, Colman | Article in Journal | | 2013 |
| The presbyterian synod and catholic emancipation, 1825-9 | Gallagher, J.R. | Thesis | | 1970 |
| The Presbyterians of Ulster 1680-1730 | Whan, Robert | Monograph or Collective Volume | Boydell | 2013 |
| The priests and people of Killaloe diocese - after Cromwell : a review article | Ó Murchadha, Ciarán | Article in Journal | | 1996 |
| The primacy in the Irish Church | Ó Fiaich, Tomás | Article in Journal | | 2006 |
| The Primacy of Ireland : resident in the see of Armagh for fourteen centuries | Reeves, William | Monograph or Collective Volume | Dublin University Press [printer] | 1886 |
| The primates and the church lands of Armagh | Glancy, Michael | Article in Journal | | 1970 |
| The primatial controversy (1670-1728) : a bibliographical note | Wall, Thomas | Article in Journal | | 1939 |
| The priory and parish of Killeigh | Comerford, M., P.P. | Article in Journal | | 1883 |
| The proctor's accounts of Peter Lewis, 1564-1565 | | Monograph or Collective Volume | Four Courts | 1996 |
| The proctors' accounts of the parish church of St Werburgh, Dublin, 1481-1627 | | Monograph or Collective Volume | Four Courts Press in association with the Representative Church Body Library | 2009 |
| The Prosperous, Co. Kildare, Crozier: archaeology and use. | Bourke, CormacHook, Duncan | Article in Journal | | 2017 |
| The province and diocese of Armagh, 1417-71 | Lynch, Anthony | Article in Journal | | 1982 |
| The province and diocese of Armagh, 1417-71 | Lynch, Anthony | Thesis | | 1979 |
| The purpose of Adomnán's Vita Columbae | Picard, Jean-Michel | Article in Journal | | 1982 |
| The purpose of Cardinal Ó Fiaich | Faul, Denis | Article in Journal | | 1991 |
| The quarrel among the Roman Catholic hierarchy over the national system of education in Ireland, 1838-41 | Larkin, Emmet | Article in Book | | 1964 |
| The radical face of Paul Cardinal Cullen | Corish, Patrick J. | Article in Book | | 1985 |
| The reconstruction of the Church of Ireland : Bishop Bramhall and the Laudian reforms, 1633-1641 | McCafferty, John | Monograph or Collective Volume | Cambridge University Press | 2007 |
| The Reformation charter of Christ Church Cathedral, Dublin, 1541 | Diamond, Ciaran | Article in Journal | | 1999 |
| The register of Milo Sweteman, Archbishop of Armagh, 1361-1380 | | Monograph or Collective Volume | Irish Manuscripts Commission | 1996 |
| The register of the Liberties of Cashel, 1654-1657 | | Article in Journal | Parish Register Society of Dublin | 1907 |
| The Reportorium Viride of John Alen, archbishop of Dublin, 1533 | White, Newport B. | Article in Journal | | 1941 |
| The Retraction of Peter Walsh, OFM, 1688 | Fennessy, Ignatius | Article in Journal | | 1992 |
| The right of patronage of the Maguires of Tempo | Faulkner, Anselm | Article in Journal | | 1977 |
| The Roman Catholic church in Ireland : 1898-1918 | Miller, David William, 1940- | Article in Journal | | 1968 |
| The second burial of Bishop Shanahan | Forristal, Desmond | Monograph or Collective Volume | Veritas | 1990 |
| The secular clergy of the archdiocese of Armagh, 1518-58 | Jefferies, Henry Allen | Thesis | | 1996 |
| The see of Tuam in Rath Breasail Synod | Connellan, M. J. | Article in Journal | | 1950 |
| The site of the bishop's court, Mullynure, Co. Armagh | Lynn, C. J. | Article in Journal | | 1976 |
| 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 state of the church in the diocese of Down and Connor during the episcopate of Robert Echlin 1613-35 | Millsopp, Sandra A. | Article in Journal | | 1982 |
| The state of the church in the diocese of Down and Connor during the episcopate of Robert Echlin, 1613-1635 | Millsopp, Sandra Ann | Thesis | | 1979 |
| The status of coarbs and erenaghs | Barry, J. G. | Article in Journal | | 1960 |
| The suppression of the see of Kells | Brady, John, d.1963 | Article in Journal | | 1945 |
| The synod of Cashel, 1101 : conservative or innovative? | Ó Corráin, Donnchadh | Article in Book | | 2004 |
| The Synod of Kells, 1152 | Battersby, William | Monograph or Collective Volume | William Battersby | 2002 |
| The times and life of Nicholas Sweetman, Bishop of Ferns, (1744-86) | Furlong, Nicholas | Article in Journal | | 1983 |
| The Vestry records of the united parishes of Fingas, St Margaret's, Artane and the Ward, 1657-1758 | | Monograph or Collective Volume | Four Courts in association with the Representative Church Body Library | 2007 |
| The visitation of the archbishop of Cashel to Waterford and Limerick, 1374-5 | Logan, F. Donald (Francis Donald), 1930- | Article in Journal | | 1976 |
| The visitation of the parishes of Armagh 'inter Hibernicos' in 1546 | Jefferies, Henry A. | Article in Book | | 2000 |
| The wardenship of Galway | Kelly, Richard J. | Article in Journal | | 1909 |
| The Wardenship of Galway | Kelly, Richard J. | Article in Journal | | 1909 |
| 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 works of Archbishop Laud | Laud, William | Monograph or Collective Volume | [s.n.] | 1847 |
| Thomas Fleming, O.F.M., bishop of Leighlin (1432-c.58), cited to a provincial council at Ferns | Lynch, Anthony | Article in Journal | | 1993 |
| 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 |
| Togher celebrates and remembered | Bradley, John | Article in Journal | | 2017 |
| Tomaltach Ua Conchobair, coarb of Patrick, 1181-1201 | Gwynn, Aubrey | Article in Journal | | 1977 |
| Tomás Ó Fiaich | Ó Glaisne, Risteárd, 1927-2003 | Article in Journal | | 1992 |
| Tomás Ó Fiaich - saol agus saothar i Maigh Nuad | Ó Doibhlin, Diarmaid | Article in Book | | 1995 |
| Tradition and Irish local records | Edwards, R. W. D. (Robert Walter Dudley) | Article in Journal | | 1973 |
| Tuaim of the Rath Breasail synod | Connellan, M. J. | Article in Journal | | 1952 |
| Túath, Manor and Parish: Kingdom of Fir Maige, Cantred of fermoy | MacCotter, Paul | Article in Journal | | 2012 |
| Two Clogher constitutions | O'Sullivan, William, 1921-2000 | Article in Journal | | 1996 |
| Two early eighteenth century bishops of Killaloe | Murphy, Ignatius | Article in Journal | | 1986 |
| Two sixteenth century Munster primates : Donnchadh Ó Taidhg (1560-62) & Richard Creagh (1564-85) | O'Brien, W. P. | Article in Journal | | 1989 |
| Uaitéar Ó Loingsigh, Easbog Chluain Fearta (1647-63) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1942 |
| Ultramontanism in Quebec and the Irish connection | Bowen, Desmond | Article in Book | | 1988 |
| Un diocése de l'Église Établei d'Irlande à l'Epoguq Georgienne d'Aprés une visite episcopale : Ossory | Loupès, Philippe | Article in Journal | | 1983 |
| Un diocèse établie d'Irlande à l'éopoque georgienne, d'après une visite épiscopale : Ossory | Loupès, Philippe | Article in Journal | | 1983 |
| Union of the dioceses of Glendaloch and Dublin in 1216 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1930 |
| Ussher and the Church of Ireland | Knox, R. Buick | Article in Journal | | 1960 |
| Vatican archives Minutae brevium in forma gratiosa relating to Clogher diocese | Haren, M. J. | Article in Journal | | 1985 |
| Vatican II : the Irish experience | Lane, Dermot A. | Article in Book | | 2004 |
| Vestry Book of the Parish of Aghalow (Caledon Co. Tyrone) with an account of the family of Hamilton of Caledon 1691-1807 | Marshall, John J. | Monograph or Collective Volume | Tyrone Printing Co. | 1935 |
| Virgil als abt und Bischof von Salzburg | Wolfram, Herwig | Article in Book | | 1985 |
| Virgil als geistiger Vater der Slawenmission und der ältesten slawischen Kirchensprache | Kronsteiner, Otto | Article in Book | | 1985 |
| Virgil und die Salzburger Slawenmission | Kahl, Hans-Dietrich | Article in Book | | 1985 |
| Virgils Bild strahlt nun heller | Ritschel, Karl Heinz | Article in Book | | 1985 |
| Visitatio regalis of Ardagh, 1615 | Gray, P. | Article in Journal | | 1940 |
| Walter Wellesley, bishop of Kildare, 147? - 1539 | Valkenburg, Augustine | Article in Journal | | 1970 |
| Waterford diocese, 1096-1363, part 4 : the diocesan chapter and extents of the diocese | O'Neill, Assumpta | Article in Journal | | 1992 |
| Were early Irish church establishments under lay control? | Holland, Martin | Article in Book | | 2006 |
| Where was Rath Breasail's Sliab Beatha? | Schlegel, Donald M. | Article in Journal | | 2012 |
| Whitby and All That : The Search for Anglican Origins | Holder, Arthur G. | Article in Journal | | 2003 |
| 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 |
| Why were there so few papal provisions in thirteenth-century Dublin? | Smith, Thomas W. | Article in Book | | 2020 |
| William Crolly, Archbishop of Armagh 1835-49 | McCauley, Ambrose | Article in Journal | | 1989 |
| William Crolly, archbishop of Armagh, 1835-1849 | Macaulay, Ambrose | Monograph or Collective Volume | Four Courts | 1994 |
| William J. Walsh, archbishop of Dublin | Walsh, Patrick | Monograph or Collective Volume | Talbot Press | 1928 |
| William King (1650-1729), man of faith and reason | Richardson, Joseph | Thesis | | 1998 |
| William Mark Duke, archbishop | Walsh, C. J. | Article in Journal | | 1988 |
| William Powell at Maynooth : an episode of religious politics in 1630s Kildare | Gillespie, Raymond | Article in Journal | | 2019 |
| William Somerwell's notarial, memorandum book and Archbishop John May | | Article in Journal | | 2001 |
| William Walsh, first archbishop of Halifax (1804-1858) | Kelly, Charlotte | Article in Journal | | 1945 |
| Writing Robert Dunne : Brisbane's first Catholic archbishop | Byrne, Neil J. | Article in Book | | 1995 |
| ‘Suitable men of good repute’ and a ‘public fornicator’: the many priors of St John’s hospital in Dublin | O’ Keeffe, Grace | Article in Book | | 2023 |