| " A vestigial population"? Perspectives on Southern Irish Protestants in the twentieth century | d'Alton, Ian | Article in Journal | | 2009 |
| "Colmcille ... built many chapels and churches in Tir Chonaill" : investigating the evidence | Ó Domhnaill, Adhamhnán | Monograph or Collective Volume | The author | 1997 |
| "It is no ordinary child I foster in my little cell" : fostering the Christ Child in medieval Ireland | O'Donnell, Thomas C. | Article in Journal | | 2017 |
| "Pagan past and Christian present" in "Félire Óengusso" | Schneiders, Marc | Article in Book | Four Courts Press | 1995 |
| "Significant find" of 8th century stone | Scott, Pauline | Article in Journal | | 2000 |
| "Silva Focluti" | McDonnell, Thomas | Article in Journal | | 1982 |
| "Verba militibus mittenda Corotici" : an analysis of St Patrick's tract on the crimes of Coroticus | Dumville, David N. | Article in Book | Boydell Press | 1993 |
| 'Clariger aetherius' : Aldhelm of Malmesbury between Ireland and Rome | Dempsey, G. T. | Article in Journal | | 2001 |
| 'Holy Entrepreneur': Agilbert, a Merovingian bishop between Ireland, England and Francia | Hammer, Carl I.
| Article in Journal | | 2012 |
| 'Journeys of the Mind: A Life in History', by Peter Brown, Princeton, 2023 | O'Loughlin, Thomas | Article in Journal | | 2024 |
| 'Late, and not a special distinction'? the misunderstood life of St. Fintan of Clonenagh | Sperber, Ingrid | Article in Journal | | 2004 |
| 'Over the storm-swelled sea' : early medieval ecclesiastical migration from northern Britain to Ireland | Plumb, Oisín Kingsley Paul | Thesis | | |
| 'What damned you?' Changelings, 'mylingar' and other dead child traditions | Dennehy, Emer | Article in Journal | | 2016 |
| 1609 : the Ulster plantation in the Iberian context | Perez Tostado, Igor | Article in Journal | | 2009 |
| A bedside book of Irish saints | Roche, Aloysius | Monograph or Collective Volume | Browne and Nolan | 1941 |
| A concise history of English Christianity : from Roman Britain to the present day | Edwards, David Lawrence | Monograph or Collective Volume | Fount | 1998 |
| A critical review of Hampson's edition of the hexametrical 'Martyrologium breviatum' in B.M. Cotton Galba A xviii | Henning, John | Article in Journal | | 1954 |
| A cross-inscribed pillar-stone on Tonlagee Mountain, Co. Wicklow | Manning, Conleth | Article in Journal | | 1998 |
| A difficult phrase in the 'Confession' of St. Patrick | Ryan, John | Article in Journal | | 1938 |
| A distribution of early Christian monastic sites and its implications for contemporary secular settlement in County Louth | Murphy, Donald | Article in Journal | | 1992 |
| A feast of all the saints of Europe | Hennig, J. | Article in Journal | | 1946 |
| A frontier town in Europe's wild west | Swift, Cathy | Article in Journal | | 2019 |
| A Gael looks at Shetland, 1 : Celtic influence; 2 : Monuments and place-names; 3 : Celtic traces in folklore and literature | Matheson, Neil | Article in Journal | | 1947 |
| A group of early Christian carved stone monuments in County Donegal | Harbison, Peter | Article in Book | | 1986 |
| A high cross base from the Rock of Cashel and a historical reconsideration of the 'Ahenny group' of crosses | Harbison, Peter | Article in Journal | | 1993 |
| A history of some places of worship in Dublin 4 | Kullmann, Kurt | Article in Journal | | 2009 |
| A history of the development of St Brendan's Cathedral, Ardfert | O'Sullivan, Marie | Article in Journal | | 1988 |
| A history of the Irish church, 400-700 AD | Bradley, ThomasWalsh, John R. | Monograph or Collective Volume | Columba | 1993 |
| A lacuna in Irish historiography: the Irish 'peregrini' from Eoin MacNeill to 'The Cambridge history of Ireland' and beyond | O'Hara, Alexander | Article in Journal | | 2023 |
| A land without martyrs? St Odrán, Gerald of Wales and Christian martyrdom in medieval Ireland | Harrington, Jesse | Article in Journal | | 2020 |
| A late life of Patrick | Buttimer, Neil | Article in Book | | 2004 |
| A list of motifs in the lives of the early Irish saints | Bray, Dorothy Ann | Article in Journal | | 1992 |
| A minature early Christian stone cross from Kilgeever, Co. Mayo | Higgins, Jim | Article in Journal | | 1995 |
| A new chronology of the Saint's life | Carney, James Patrick, 1914-1989 | Article in Book | | 1958 |
| A new edition of the Hagiography of St Finbarr [review article] | Breathnach, Pádraig | Article in Journal | | 1996 |
| A new survey of Templecormick, Audleystown, County Down | MacDonald, Philip | Article in Journal | | 2008 |
| A note of 'Mare occidentale' (Patrick, confession 23) | Hanson, R. P. C. | Article in Journal | | 1978 |
| A note on the dairteach | Manning, Conleth | Article in Book | | 2015 |
| A note on the traditions of St Frediano and St Silas of Lucca | Hennig, John | Article in Journal | | 1951 |
| A Pagan-Christian transitional burial at Kiltullagh | McCormick, FinbarOthers | Article in Journal | | 1995 |
| A panel on the North Cross at Clonmacnoise | Bourke, Cormac | Article in Journal | | 1986 |
| A passion for justice : social ethics in the Celtic tradition | McMaster, Johnston | Monograph or Collective Volume | Dunedin Academic Press | 2008 |
| A rationale for the censuring of Saint Patrick by the 'Seniores' | Ó Raifeartaigh, T. | Article in Journal | | 1984 |
| A review of early Christianity in Ireland based on the most current archaeologial research | Ó Floinn, Raghnall | Article in Book | | 2012 |
| A second Ogham stone at Clara | Manning, ConlethMoore, Fionnbarr | Article in Journal | | 1997 |
| A serendipitous encounter with St Kilian | Karp, Theodore | Article in Journal | | 2000 |
| A sheep in Wolf-Son's clothing? Lugaid Mac Con and pseudo-historical etiology | Holmberg, Matthew | Article in Journal | | 2011 |
| A short history of the Diocese of Elphin | Mooney, Canice | Article in Book | | 2000 |
| A study of St Patrick's sources | Nerney, D. S. | Article in Journal | | 1949 |
| A tale of two cathedrals Aghadoe and Ardfert. 12th-century religious reform | O'Donoghue/Ross, Elizabeth | Article in Journal | | 2014 |
| A trip through the history of Dalkey Island | Curran, Peadar | Article in Journal | | 2023 |
| A world made whole : the rediscovery of the Celtic tradition | De Waal, Esther | Monograph or Collective Volume | Fount | 1991 |
| Adomnán : a man of many parts | O'Loughlin, Thomas | Article in Book | | 2001 |
| Adomnan's life of Columba | Adomnán, Saint, c.627-704Anderson, Alan OrrAnderson, Marjorie | Monograph or Collective Volume | Nelson | 1961 |
| Adventure in hope : reflections on religious life, education and Christian formation | Kenneally, Martin | Monograph or Collective Volume | Columba Books | 2023 |
| Aftermath : Celtic Christianity | Ryan, Michael | Article in Book | | 1990 |
| Ailerani interpretatio mystica et moralis progenitorum Domini Iesu Christ | | Monograph or Collective Volume | Four Courts | 1995 |
| An Austrian fragment of a life of St. Patrick | Bieler, Ludwig | Article in Journal | | 1961 |
| An dá Cholmcille | Conway, Colmcille | Article in Journal | | 1963 |
| An early Christian cross-slab from Roscam, Co. Galway | Higgins, Jim | Article in Journal | | 1992 |
| An early Christian site at Curraclone, Co. Laois | Fitzpatrick, Liz | Article in Journal | | 1987 |
| An early Christian site on Saint's Island, Lough Mask, Co. Mayo and its cross-slabs | Higgins, Jim | Article in Journal | | 1993 |
| An early ecclesiastical enclosure at Kilmore, Ballingeary, Co. Cork | Hamer, JerryO'Sullivan, JerrySharpe, LornaTompsett, Gary | Article in Journal | | 2000 |
| An early fragment of St. Patrick in Uí Briúin Breifne | Grosjean, Paul | Article in Journal | | 1954 |
| An early Irish Adam and Eve : 'Saltair na Rann' and the traditions of the fall | Murdoch, Brian | Article in Journal | | 1973 |
| An explored question : Celtic church influence on Old French hagiography | Lonigan, Paul R. | Article in Journal | | 1974 |
| An Insular Odyssey : manuscript culture in early Christian Ireland and beyond | | Monograph or Collective Volume | Four Courts Press | 2017 |
| An interpretation of certain symbolic sculptures of early Christian Ireland | Roe, Helen M. | Article in Journal | | 1945 |
| An introduction to early Irish saints' lives | McCone, Kim | Article in Journal | | 1984 |
| An introduction to the history of England : from the earliest times to 1204 | Jerrold, Douglas | Monograph or Collective Volume | | 1949 |
| An Irish apostle : articulating and actualising apostolicity in the early Irish church | Lordan, Shane | Thesis | | 2012 |
| An outline list of Prof. Pádraig Ó Riain's publications | Anonymous | Article in Book | | 2004 |
| An pota teangacha Ceilteacha | Ó Fiannachta, Pádraig | Article in Journal | | 2009 |
| An scrioptúr i mbeathaí naomh na hEireann | Ó Meachair, Micheál | Article in Journal | | 1993 |
| Analyse du livre d'Armagh | Grosjean, Paul | Article in Journal | | 1944 |
| Ancient crosses in Barony of Ballaghkeen | Ranson, Joseph | Article in Journal | | 1948 |
| Ancient crosses in the Faughan river valley, county Derry | Jefferies, Henry A.Johnson, Ethna | Article in Journal | | 1999 |
| And shall these mute stones speak? Post-Roman inscriptions in western Britain | Thomas, Charles | Monograph or Collective Volume | University of Wales Press | 1994 |
| Anecdotum Patricianum : fragments of a Life of Patrick from MSS Cotton Vitellius E vii and Rawlinson B 479 | Bieler, Ludwig | Article in Book | | 1944 |
| Appellations of saints in early Irish martyrologies | Hennig, John | Article in Journal | | 1957 |
| Approach the fountain : a history of Seir Kieran | Irish Countywomen's Association, Seir Kieran Guild | Monograph or Collective Volume | Seir Kieran I.C.A. | 1992 |
| Archaeological excavation at Kilroot, county Antrim: an early Christian and medieval cemetery | McDonald, Philip | Article in Journal | | 2012 |
| Archaeological excavation of a Late Bronze Age burnt stone spread and medieval and post-medieval deposits in the vicinity of Inistioge, Co. Kilkenny | Hull, Graham | Article in Journal | | 2020 |
| Archaeological investigations at Kilhorne, Moneydorragh More, County Down | MacDonald, PhilipMcIlreavy, David | Article in Journal | | 2007 |
| Archaeology : the early Christian period | Henry, Françoise, 1902-1982 | Article in Book | | 1957 |
| Archaeology and myth in early medieval Europe : making the gods of early Ireland | Gleeson, Patrick | Article in Journal | | 2020 |
| Architecture and epigraphic evidence for Christian Celts in Connecticut, circa 500-700 A.D. | Whittall, James P. | Article in Book | | 1989 |
| Are you my brother? Medieval Irish ecclesiastical fosterage | Preston-Matto, Lahney | Article in Book | Four Courts Press | 2018 |
| Ashford in Pre and Early Christian Times | O'Reilly, Stan J. | Article in Journal | | 2022 |
| Aspects de la civilisation copte en Irlande | Manara, Franck | Article in Journal | | 2002 |
| Aspects of memory in medieval Irish literature | Quaintmere, Max | Thesis | | |
| Aspects of settlement of an hereditary clerical family of the medieval period: the Terrys of Cork | Terry, Kevin | Article in Journal | | 2010 |
| Aughagower and its Patrician sites and connections | Mannion, Brian | Article in Journal | | 1988 |
| Bagels, peacocks and Donegal | Kilbride-Jones, Howard | Article in Journal | | 1995 |
| Baithin 2000 - plans to celebrate the 1,400th anniversay of the death of St Baithin | Crooks, D. W. T. | Article in Journal | | 1999 |
| Bangor, light of the world | Adamson, Ian | Monograph or Collective Volume | Fairview Press | 1979 |
| Baptism and episcopal consecration in the Celtic churches | Paulinus | Article in Journal | | 1936 |
| Baptizing the fairies : the Christian conversion typescene as a rite de passage | Wiley, Dan M. | Article in Journal | | 1995 |
| Barra Naofa : léamh nua ar a chúlra Connachtach | Ó Riain, Pádraig | Article in Journal | | 2005 |
| Beatha agus saoghal ré Cholumcille | Ó Searchaigh, Séamus | Article in Journal | | 1947 |
| Beatha Barra : Saint Finbarr of Cork : the complete life | | Monograph or Collective Volume | Irish Texts Society | 1994 |
| Beatha Bheag Dhéagláin | Ó Macháin, Pádraig | Article in Journal | | 2005 |
| Beatha Bhrighde | NA | Monograph or Collective Volume | Oifig an tSoláthair | 1940 |
| Beatha Cholm Cille | Ó Searchaigh, Séamus | Monograph or Collective Volume | Oifig an tSoláthair | 1967 |
| Beatha Cholm Cille : sleachta as Betha Colaim Chille | O'Donnell, Manus, Lord of Tirconnell | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1981 |
| Beatha Phádraig | Anonymous | Monograph or Collective Volume | Oifig an tSoláthair | 1941 |
| Bede, Wilfrid, and the Irish | Stancliffe, Clare | Monograph or Collective Volume | St Paul's Church, Jarrow | 2003 |
| Beg-Eire | Macalister, R. A. S. (Robert Alexander Stewart) | Article in Journal | | 1920 |
| Betha Colaim Chille | Ó Domhnaill, Maghnus
| Monograph or Collective Volume | University of Illinois, Urbana | 1918 |
| Bhí Naomh Padraig annseo : cuntas ar a sheacht dteampaill in Uí Tuirtre | Ó Doibhlin, Éamon | Article in Journal | | 1955 |
| Bibliography | Anonymous | Article in Book | | 1993 |
| Bibliography of Dr Françoise Henry | Richardson, Hilary | Article in Journal | | 1975 |
| Bibliography of Patrician literature | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1964 |
| Bibliography of the publications of Kathleen Hughes | Dumville, David N. | Article in Book | | 1982 |
| Bibliotheca hagiographica latina antiquae et mediae aetatis | Bollandiani, Socii | Monograph or Collective Volume | [s.n.] | 1901 |
| Bishop Patrick and the earliest Christian mission to Ireland | Smyth, Alfred P., 1942- | Article in Book | | 2002 |
| Bishops and presbyters in early Christian Ireland | de Bhaldraithe, Eoin | Article in Journal | | 2010 |
| Bishops in the early Irish church : a reassessment | Etchingham, Colmán | Article in Journal | | 1994 |
| Bobbio in the early middle ages : the abiding legacy of Columbanus | Richter, Michael, 1943-2011 | Monograph or Collective Volume | Four Courts | 2008 |
| Boniface and the Irish heresy of Clemens | Meeder, Sven | Article in Journal | | 2009 |
| Book-making in early Christian Ireland | O'Neill, Timothy, 1947- | Article in Journal | | 1989 |
| Books, learning and sanctity in early Christian Ireland | Kelly, Joseph | Article in Journal | | 1979 |
| Brendan (the saint and his travels) | Ó Ríordáin, J. | Article in Journal | | 1989 |
| Brendan the navigator : an interpretation | Little, George A. | Monograph or Collective Volume | Gill | 1945 |
| Britain and Ireland in early Christian times, A.D. 400-800 | Thomas, Charles | Monograph or Collective Volume | Thames & Hudson | 1971 |
| British missionary activity in Ireland | Dumville, David N. | Article in Book | | 1993 |
| Buhé sant Kolmkel. Lakeit é Brohoneg na Meneh Breih Goh | Héneu, I. M. | Monograph or Collective Volume | Oriant Molladennu 'Dihunamb' | 1939 |
| Bulletin d'ancienne littérature chrétienne latine, tome 3 | Charlier, CFransen, I. | Article in Journal | | 1949 |
| Cainnech alias Colum Cille, patron of Ossory | Ó Riain, Pádraig | Article in Book | | 1983 |
| Canice : saint of the Roe valley | St. Canice's Jubilee Committee | Monograph or Collective Volume | St. Canice's Jubilee Committee | 2000 |
| Carmen de Hibernia Insula : the earliest poem about Ireland | O'Hara, Alexander | Article in Book | | 2015 |
| Carpet pages and Chi-rhos : some depictions in Irish early Christian manuscripts and stone carvings | Herity, Michael | Article in Journal | | 1990 |
| Carved upright stone near the south face of Clogher Cathedral Tower, co. Tyrone | Lawlor, H.C. | Article in Journal | | 1931 |
| Ceallach, easpag Chill Ala sa seu haois | Ó Dubhtaigh, Seán | Article in Journal | | 1982 |
| Cellular meanings, monastic beginnings | Thomas, Charles | Article in Journal | | 1995 |
| Celtic and early Christian Wexford, AD 400 to 1166 | Culleton, Edward | Monograph or Collective Volume | Four Courts | 1999 |
| Celtic Christianity : ecology and holiness | Bamford, ChristopherMarsh, William Parker | Monograph or Collective Volume | Floris | 1986 |
| Celtic Christianity : making myths and chasing dreams | Bradley, Ian C. | Monograph or Collective Volume | Edinburgh University Press | 1999 |
| Celtic Christianity : texts and representations | Davies, Oliver | Article in Book | | 2002 |
| Celtic Christianity : the story of the Celtic religion in the British Isles | McAlpine, R. G. | Monograph or Collective Volume | | 1967 |
| Celtic Christianity and nature : early Irish and Hebridean traditions | Low, Mary | Monograph or Collective Volume | Edinburgh University Press | 1996 |
| Celtic culture and the conversion of Ireland | Scott, W. H. | Article in Journal | | 1967 |
| Celtic Ireland | Mac Néill, Eoin | Monograph or Collective Volume | | 1921 |
| Celtic pilgrimage, past and present : from historical geography to contemporary embodied practices | Maddrell, AvrilScriven, Richard | Article in Journal | | 2016 |
| Celtic roots : vernacular terminology and pagan ritual in Carlomann's draft capitulary of AD 743 | Haderlein, Konrad | Article in Journal | | 1992 |
| Celtic spirituality | | Monograph or Collective Volume | Paulist | 1999 |
| Celts and Normans | MacGearailt, Gearóid | Monograph or Collective Volume | | 1969 |
| Cenél nÉogain in Patrician hagiography | Charles-Edwards, Thomas | Article in Journal | | 2020 |
| Cherubim and seraphim in insular literature and art | Henderson, George | Article in Book | | 2011 |
| Christ in Celtic Christianity : Britain and Ireland from the fifth to the tenth century | Brown, Shirley AnnHerren, Michael W. | Monograph or Collective Volume | Boydell | 2002 |
| Christ the wounded lover and affective piety in late medieval Ireland and beyond | Ryan, Salvador | Article in Book | | 2016 |
| Christ's entry into Jerusalem on the Northern High Crosses | King, Mike | Article in Journal | | 2014 |
| Christian communities in fifth- and sixth-century Ireland | Swift, Catherine | Article in Journal | | 1996 |
| Christian head cult | Corlett, Christiaan | Article in Journal | | 1998 |
| Christian heroes remembered and forgotten : the Irish Folklore Commission's local patron saint questionnaire in Connacht | Marnell, Cian | Article in Journal | | 2014 |
| Christian inscriptions in the Irish language | Petrie, GeorgeStokes, Margaret | Monograph or Collective Volume | [s.n.] | 1878 |
| Christian past and primal present | Mackey, J. P. | Article in Journal | | 1992 |
| Christianising pagan worlds in conversion-era Ireland : archaeological evidence for the origins of Irish ecclesiastical sites | Harney, Lorcan | Article in Journal | | 2017 |
| Christianity and paganism, 350-750 : the conversion of western Europe | Hillgarth, J. N. | Monograph or Collective Volume | [s.n.] | 1986 |
| Christianity and the Celts | Olsen, Ted, 1974- | Monograph or Collective Volume | Lion | 2003 |
| Christianity comes to Iceland | O'Byrne, Cathal | Article in Journal | | 1940 |
| Christianity in Celtic lands : a history of the churches of the Celts, their origin, their development, influence, and mutual relations | Gougaud, LouisJoynt, MaudPicard, Jean-Michel | Monograph or Collective Volume | Four Courts | 1992 |
| Christianity not mysterious and the Enlightenment | McGuinness, Philip | Article in Book | | 1997 |
| Christianity, churches and burial places | Hurley, Maurice | Article in Book | | 2005 |
| Christianizing the landscape of Mag Réta : home territory of the kings of Laígis | Ó Carragáin, Tomás | Article in Book | Four Courts Press | 2018 |
| Christians and pagans : the conversion of Britain from Alban to Bede | Lambert, Malcolm D. | Monograph or Collective Volume | Yale University Press | 2010 |
| Church and state in early Christian Ireland | Nugent, William, Rev. | Thesis | | 1949 |
| Church and state in early Ireland | Hurley, Vincent | Article in Journal | | 1981 |
| Church organisation in Ireland, A.D. 650 to 1000 | Etchingham, Colmán | Monograph or Collective Volume | Laigin Publications | 1999 |
| Church-government and the spread of Christianity in Ireland | Dumville, David N. | Article in Book | | 1993 |
| Churches in the Irish Landscape Ad 400-1100 | Ó Carragáin, Tomás | Monograph or Collective Volume | Cork University | 2021 |
| Cinnirí Gaedhealacha na Críostaidheachta. L. S. Gógan d'aistrigh | Gougaud, Louis | Monograph or Collective Volume | Oifig an tSoláthair | 1939 |
| Clavis patrum Latinorum seu propylaeum ad Corpus Christianorum | Dekkers, E.Gaar, E. | Monograph or Collective Volume | Abbatia S. Petri | 1951 |
| Clerical sea pilgrimages and the Imrama | Thrall, William Flint | Article in Book | | 2000 |
| Clonmacnoise | Manning, Conleth | Monograph or Collective Volume | The Stationery Office | 1994 |
| Clonmacnoise - when experts meet ..... | Ó Ríordain, Dúlra | Article in Journal | | 1998 |
| Clonmacnoise : a historical summary | Ryan, John | Monograph or Collective Volume | The Stationery Office | 1976 |
| Clonmacnoise cathedral - the oldest church in Ireland? | Manning, Conleth | Article in Journal | | 1995 |
| Clonmacnoise, Co. Offaly | Manning, Conleth | Monograph or Collective Volume | Dúchas, the Heritage Service | 1998 |
| Clonshanbo (c.540 - 1959) | Cullen, Seamus | Article in Book | | 1999 |
| Cluain Coirpthe and Kinel Dofa | Farrell, Alan
| Article in Journal | | 1996 |
| Colmán of Cloyne : a study | MacCotter, Paul | Monograph or Collective Volume | Four Courts | 2004 |
| Colmcille : missionary or deportee? | Conway, Colmcille | Article in Journal | | 1963 |
| Columba | Finlay, Ian | Monograph or Collective Volume | | 1991 |
| Columba | Finlay, Ian | Monograph or Collective Volume | Gollancz | 1979 |
| Columba and other Irish saints in Scotland | Anderson, M. O. | Article in Book | | 1965 |
| Columba, founder of the monastery of Derry? - 'Mili manet Incertus' | Lacey, Brian | Article in Journal | | 1998 |
| Columbanus 'ad locum': The establishment of the monastic foundations | O'Hara, Alexander | Article in Journal | | 2015 |
| Columbanus and Gennadius | Cedro, Carlo | Article in Journal | | 2021 |
| Commentary on the life of St Finbarr | Ó Buachalla, Liam | Article in Journal | | 1965 |
| Conchobar Mac Nesa (? first century A.D.) and the triumph of Christianity | Breatnach, Liam | Article in Book | | 1989 |
| Constructing Colum Cille | Lacey, Brian | Article in Journal | | 2004 |
| Continuity, cult and contest | Waddell, John | Article in Book | | 2011 |
| Conversin and the origin of Irish script | Stansbury, Mark | Article in Book | | 2016 |
| Conversion and consolidation in Leinster's royal heartland | Gleeson, PatrickÓ Carragáin, Tomás | Article in Book | | 2016 |
| Conversion and cultural change : burial paradigms in Viking age Iceland | Vésteinsson, Orri | Article in Book | | 2016 |
| Conversion in context : anthropological and missiological aspects from African Studies | Drønen, Tomas Sundnes | Article in Book | | 2016 |
| Conversion in Ireland | Etchingham, Colmán | Article in Book | | 2016 |
| Conversion in Ireland : reflections on the state of the art | Flechner, Roy | Article in Book | | 2016 |
| Conversion to Christianity and economic change : consequence or coincidence? | Davies, WendyFlechner, Roy | Article in Book | | 2016 |
| Conversion to Christianity in Scandinavia : a historiographical overview | Nordeide, Sæbjørg Walaker | Article in Book | | 2016 |
| Conversions to Christianity | Pryce, Huw | Article in Book | | 2009 |
| Converting the Isles : continuity and transformation | Ní Mhaonaigh, Máire | Article in Book | | 2016 |
| Converting the land of the Irish : Saint Patrick, the Church, and the Irish landscape | Schryver, James G. | Article in Book | Four Courts Press | 2018 |
| Coolbanagher medieval font - an insight | Murray, Sean | Article in Journal | | 2016 |
| Corporeal relics, tents and shrines in early medieval Ireland | Bourke, Cormac | Article in Journal | | 2018 |
| Could well be a mill | Manning, Conleth | Article in Journal | | 2007 |
| 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 |
| Cows, ringforts and the origins of early Christian Ireland | McCormick, Finbar | Article in Journal | | 1995 |
| Creating communities : elites, ideologies and literature in ninth- and tenth-century Ireland | Johnston, Elva | Thesis | | |
| Credo: Christianisierung Europas im Mittelalter | | Monograph or Collective Volume | Michael Imhof Verlag | 2013 |
| Crocan na Reilge graveyard and the legend of St Mary's Abbey | Kelly, John | Article in Journal | | 2018 |
| Crosses in circulation : processes and patterns of acquisition and display of early-medieval sculpture in the national museums of Britain and Ireland, circa 1850 to 1950 | McCormick, Elizabeth Laing | Thesis | | |
| Cummian's letter : science and heresy in seventh-century Ireland | Walsh, Maura | Article in Book | | 2013 |
| Currency, conversion and the landscape of power in the Middle Ages | Naismith, Rory | Article in Book | | 2016 |
| Das Bekenntnis des heiligen Patrick und sein Brief an die Gefolgsleute des Coreticus. Eingeleitet u. übersetzt von F. Wotke | Patricius, Santus | Monograph or Collective Volume | Herder | 1940 |
| Das Irenkloster Honau und seine Regel | Eberl, Immo | Article in Book | | 1982 |
| Das problem vorkolumbischer Beziehungen zwischen Alter und Neuer Welt und seine Bedeutung für die allgemeine kulturgeschichte | Heine-Geldern, R. | Article in Journal | | 1954 |
| Dáta Vita Tripartita Santi Patricii | Mac Donncha, Frederic | Article in Journal | | 1982 |
| De Beltaine à Pâgues | Armao, Frédéric | Article in Journal | | 2002 |
| De initiis : Apacrafa, an Bíobla agus léann luath-eaglais na hÉireann | Mac Conmara, Máirtín | Article in Book | | 2015 |
| De Jérusalem vers l'Irlande : la translation du Golgotha et du saint Sépulcre | Mebarki, Farah | Article in Journal | | 2002 |
| Deer and its abbots in the late Middle Ages | Dilworth, Mark | Article in Book | | 2008 |
| Deer and the early church in north-eastern Scotland | Clancy, Thomas Owen | Article in Book | | 2008 |
| Degen of Kilconriola | Lawlor, H. C. (Henry Cairnes), 1870-1943 | Article in Journal | | 1938 |
| Der Bibeltext des heiligen Patrick | Bieler, Ludwig | Article in Journal | | 1947 |
| Der irische Hintergrund der angelsächsischen Mission | Richter, Michael, 1943-2011 | Article in Book | | 1982 |
| Der Kult des heiligen Kolumban im Elsass | Barth, Medard | Article in Book | | 1951 |
| Derry, Iona, England and the governance of the Columban church | Dumville, David N. | Article in Book | | 1999 |
| Derrynavlan and other early church treasures | Richardson, H. | Article in Journal | | 1981 |
| Design and Meaning in Early Medieval Inscriptions in Britain and Ireland | Higgitt, John | Article in Book | | 2003 |
| Devotional cultures of European Christianity, 1790-1960 | | Monograph or Collective Volume | Four Courts | 2012 |
| Die altirische Kirche. Urchristentum im Westen | Los, Cornelis | Monograph or Collective Volume | Urachhaus | 1954 |
| Die Franken und die Ausbreitung des Christentums bis zu den Tagen von Bonifatius | Büttner, Heinrich | Article in Journal | | 1951 |
| Die Gründung der mitteldeutschen Bistümer | Bigelmair, Andreas | Article in Book | | 1954 |
| Die Iren und die Christianisierung der Baiern | Keller, Heinrich | Article in Book | | 1982 |
| Die Iren und die christianisierung mainfrankens | Wendenhorst, Alfred | Article in Book | | 1982 |
| Die Salzburger Slawenmission im 8./9. Jahrhundert und der Anteil der Iren | Dopsch, Heinz | Article in Book | | 1987 |
| Diplomatic elements in Willibrod's autobiography | Pelteret, David A.E.
| Article in Journal | | 2012 |
| Discovering Saint Patrick | O'Loughlin, Thomas | Monograph or Collective Volume | Darton Longman & Todd | 2005 |
| Dísert Diarmata / Castledermot and Uí Bairrche connections | Doherty, Charles | Article in Journal | | 2018 |
| Divine law in the Pauline commentary of the eighth-century Hiberno-Latin "reference Bible" | Carella, Bryan | Article in Journal | | 2011 |
| Divine predestination and foreknowledge consistent with the freedom of man's will | King, William, archbishop of Dublin | Monograph or Collective Volume | | 1709 |
| Documents on the cult of St. Malachy | Leclercq, Jean | Article in Journal | | 1959 |
| Does the Armorican Forest hold the key to Saint Patrick's escape? | Keogh, Raymond M. | Article in Journal | | 1994 |
| Domestic wooden artefacts from prehistoric and early historic periods in Britain and Ireland : their manufacture and use | Earwood, Caroline | Thesis | | |
| Downland, marsh, and weald : monastic foundation and rural intensification in Anglo-Saxon Kent | Thomas, Gabor | Article in Book | | 2016 |
| Dr Han Collis - lifelong champion of children, heroine to Holocaust survivors | Irish Times, The | Article in Journal | | 2005 |
| Drumphea - the coming of Christianity | O'Neill, Liam | Article in Journal | | 2012 |
| Dublin's oldest book? a list of saints 'made in Germany' | Ó Riain, Pádraig | Article in Book | | 2004 |
| Duleek, an early Christian site | Swan, Leo, 1930-2001 | Article in Journal | | 1973 |
| Duleek: monastic influence on urban development | French, Noel | Article in Journal | | 2015 |
| Dunleckney vicarage underr challenge in 1486 | O'Brien, Niall | Article in Journal | | 2017 |
| Earlier functions of Irish vocal music | Ó Madagáin, Breandán | Article in Book | | 2013 |
| Early Celtic Christianity | Lehane, Brendan | Monograph or Collective Volume | Constable | 1994 |
| Early Celtic Christianity | Lehane, Brendan | Monograph or Collective Volume | Continuum | 2005 |
| Early Christian and Anglo-Norman settlement in the townland of Baltrasna, Ashbourne, Co. Meath | Feeley, Ephrem | Article in Journal | | 1990 |
| Early Christian cross slabs in Down County Museum | Simpson, M. Lesley | Article in Journal | | 2000 |
| Early Christian decorated slabs in Donegal : An Turas and the tomb of the founder saint | Herity, Michael | Article in Book | | 1995 |
| Early Christian foundations of Imolilly | MacCarthy, C. J. F. | Article in Journal | | 1945 |
| Early Christian hermitage discovered on Omey island | O'Keeffe, Tadhg | Article in Journal | | 1992 |
| Early Christian inhumations on Kiltullagh Hill, Co. Roscommon | Coombs, D.Maude, K.Robinson, M.E.Shimwell, D.W. | Article in Journal | | 2000 |
| Early Christian Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Monograph or Collective Volume | Cambridge University Press | 2000 |
| Early Christian Ireland | De Paor, LiamDe Paor, Máire | Monograph or Collective Volume | Thames & Hudson | 1958 |
| Early Christian Ireland : settlement and environment | Stout, Matthew | Article in Book | | 1999 |
| Early Christian Irish art | Henry, Françoise, 1902-1982 | Monograph or Collective Volume | Cultural Relations Committee of Ireland | 1963 |
| Early Christian Knowth and the kingdom of Brega | Eogan, George | Article in Journal | | 2010 |
| Early Christian manuscripts | Simms, George Otto | Article in Book | | 1986 |
| Early Christian Meath | Brady, John, d.1963 | Article in Journal | | 1958 |
| Early Christian monuments at Kilgeever, Co. Mayo | Gibbons, MichaelHiggins, Jim | Article in Journal | | 1993 |
| Early Christian monuments in Ireland | Geoghegan, Cathal | Article in Journal | | 1937 |
| Early Christian settlement in North-West Ulster | Kerr, Thomas R. (Thomas Robert), 1972- | Monograph or Collective Volume | Archaeopress | 2007 |
| Early Christian settlement, society and economy | Stout, Matthew | Article in Book | | 1998 |
| Early Christian symbolism with particular reference to objects of Irish provenance : interpretation and application | Kilbride-Jones, Howard | Article in Book | | 1995 |
| Early churches - agriculture and food | Downey, LiamO'Sullivan, Muiris | Article in Journal | | 2017 |
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| Early Irish history and pseudo-history | Kelleher, J. V. | Article in Journal | | 1963 |
| Early Irish missions in Great Britain. 1. Fruits of Irish piety among the Britons|2. Missionary labours of St Columba and his companions in Scotland|3. The successors of St Columba in Iona|4. Irish saints in the kingdom of Strathclyde|5. Some other Irish saints in Scotland|6. First missions to the Anglo-Saxons|7. St Aidan, first bishop of Lindisfarne|8. The immediate successors of St Aidan in Lindisfarne|9. St Cuthbert|10. Irish missions in the other Anglo-Saxon kingdoms | Moran, Patrick Francis, cardinal, 1830–1911 | Article in Journal | | 1879 |
| Early Irish monasteries | Manning, Conleth | Monograph or Collective Volume | Country House | 1995 |
| Early Irish monasticism | Curran, Michael, MSC | Article in Book | | 1981 |
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| Early Irish spirituality | Ó Laoghaire, Diarmuid, SJ | Article in Journal | | 1969 |
| Early Irish spirituality : 'one, holy, catholic and apostolic' | Shaw, Francis | Article in Journal | | 1963 |
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| Early medieval Munster : thoughts upon its primary Christian phase | Thomas, Charles | Article in Book | | 1998 |
| Easter cycles in the early Irish church | O'Connell, D. J. K. | Article in Journal | | 1936 |
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| England's contribution to the history of the calendar | Hennig, John | Article in Journal | | 1954 |
| English translation of the 'Confession' and the 'Letter to Coroticus' of Saint Patrick | Hanson, R. P. C. | Article in Journal | | 1972 |
| Envisioning Christ on the cross : Ireland and the early medieval West | | Monograph or Collective Volume | Four Courts | 2013 |
| Evidence fot the location of the medieval parish church of Rathcormac: excavations at Dispensary Lane, 2004 | Moloney, Colm | Article in Journal | | 2010 |
| Excavating an archive | Baker, Christine | Article in Journal | | 2012 |
| Excavation of pre-Norman structures on the site of an enclosed early Christian cemetery at Cherrywood, County Dublin | O'Neill, John | Article in Book | | 2006 |
| Excavations at Rosshill abbey, Co. Galway | Clyne, Miriam | Article in Journal | | 1992 |
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| Fine metalwork from the early Christian site at Kilpatrick, Co Westmeath | Swan, Leo, 1930-2001 | Article in Book | | 1995 |
| Finnian or Winniau? | Ó Riain, Pádraig | Article in Book | | 1984 |
| Five Irish saints | Curtayne, Alice | Article in Journal | | 1946 |
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| Forgotten stones : ancient church sites of the Burren and environs | Swinfen, Averil | Monograph or Collective Volume | Lilliput Press | 1992 |
| Four Latin lives of St Patrick : Colgan's 'Vita Secunda' , 'Quarta', 'Tertia' and 'Quinta' | Bieler, LudwigColgan, John | Monograph or Collective Volume | Institute for Advanced Studies | 1971 |
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| From Díseart Finnchille to Cill Droim Sirideáin: Drumhurt's sacred site and cemetery | Kelly, Liam | Article in Journal | | 2023 |
| From Ireland to Bohemia : the distant reach of Thomas of Ireland and his De Tribus Punctis | Woods, Penelope | Article in Book | | 2018 |
| From Malin to the Middle East: the Inishowen crosses and pillar stones | Brown, Michelle P. | Article in Journal | | 2018 |
| From misfit to anarchist: The impact of the Spanish Civil War on Captain J.R. White | Convery, David | Article in Journal | | 2015 |
| From observation to scientific speculation in seventh-century Ireland | Smyth, Marina | Article in Book | | 2013 |
| From pagan to Christian in Anglo-Saxon England | Yorke, Barbara | Article in Book | | 2016 |
| From Rome to Augustine : Britain before 597 | Cavill, Paul, 1956-Jackson, Michael | Article in Book | | 2000 |
| Frühes fränkisches christentum am Mittelrhein | Büttner, Heinrich | Article in Journal | | 1951 |
| Further Evidence for A Columban Iceland : Preliminary Results of Recent Work | Ahronson, Kristján | Article in Journal | | 2000 |
| Gildas | Kerlouégan, François | Article in Journal | | 1985 |
| Gildas, a father of the church | Sharpe, Richard | Article in Book | | 1984 |
| Glendalough : St. Kevin's road | Price, Liam | Article in Book | | 1995 |
| Glendalough and its churches | Manning, Conleth | Article in Journal | Archaeology Ireland | 2016 |
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| Gli scritti de san Patrizio : alle origini del cristianesmio irlandese | Malaspina, Elena | Monograph or Collective Volume | [s.n.] | 1985 |
| Gnasanna na Marbh | Ó Duinn, Sean | Article in Journal | | 1994 |
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| Godly reading : print, manuscript and puritanism in England, 1580-1720 | Cambers, Andrew | Monograph or Collective Volume | Cambridge UP | 2011 |
| Growth and development in the late Ulster Cycle : the case of Táin Bó Flidais | Ó hUiginn, Ruairí | Article in Book | | 2006 |
| Hagiographica celtica | Grosjean, Paul | Article in Journal | | 1937 |
| Hagiography or history? Early medieval approaches to establishing origin and provenance for Insular copies of scripture | Brown, Michelle P. | Article in Book | | 2017 |
| Hand-bells of the Celtic church in Scotland | Purser, John W. | Article in Journal | | 2006 |
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| Hiberno-Latin biblical studies II. An Irish abbreviation of St Gregory the Great on the Book of Job | McNamara, Martin | Article in Journal | | 1973 |
| High Island : an Irish monastery in the Atlantic | Marshall, Jenny WhiteRourke, Grellan D. | Monograph or Collective Volume | Town House & Country House | 2000 |
| History and miracle stories in the biography of Nynia | MacQueen, John | Article in Journal | | 1962 |
| History and salvation in Lebor na hUidre | Toner, Gregory | Article in Book | | 2015 |
| History, iconography and theology: re-examining the Downpatrick high cross | Henvey, Megan | Article in Journal | | 2012 |
| How Christianity came to Britain and Ireland | Brown, Michelle P. | Monograph or Collective Volume | Lion | 2006 |
| How Christianity came to Britain and Ireland | Browne, Michelle P. | Monograph or Collective Volume | Lion | 2006 |
| How the Irish saved civilization : the untold story of Ireland's heroic role from the fall of Rome to the rise of medieval Europe | Cahill, Thomas | Monograph or Collective Volume | Hodder and Stoughton | 1995 |
| Hystoria of Saint Tiarnach | Ó Dufaigh, Seosamh | Article in Journal | | 2014 |
| Ich Patricius : Die Autobiographie des Apostels der Iren | Berschin, Walter | Article in Book | | 1982 |
| Ideological transitions in Pictland | Carver, Martin | Article in Book | | 2016 |
| Illaunloughan : life and death on a small early monastic site | Marshall, Jenny WhiteWalsh, Claire | Article in Journal | | 1994 |
| Illuminated stepped cross in the Chester Beatty Library | Kearney, Jonathan | Article in Book | | 2013 |
| In Conall's footsteps | McGill, Lochlainn | Monograph or Collective Volume | Brandon | 1992 |
| In journeyings often | Magee, Philip | Monograph or Collective Volume | Philip Magee | 1993 |
| In search of Irish saints : the peregrinatio pro Christo | Ní Mheara, Róisín | Monograph or Collective Volume | Four Courts | 1994 |
| Inishdooey and its ancient church | Lacey, Brian; Mac Gairbheá; O'Toole, Peter (Aerial photographs) | Article in Journal | | 2024 |
| Interpretazione de S. Colombano | Vinay, G. | Article in Journal | | 1948 |
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| Into the west : a fifth/sixth-century lady and her horse join the ancestors | O'Brien, Elizabeth | Article in Book | | 2016 |
| Introduction | Hughes, Kathleen Winifred | Article in Book | | 1968 |
| Introduction | Doherty, Charles | Article in Book | | 2013 |
| Introduction : Christian modernities in Britain and Ireland in the twentieth century | Carter Wood, John | Article in Journal | | 2020 |
| Introduction : the life and legend of Saint Brendan | Burgess, Glyn Sheridan | Article in Book | | 2002 |
| Iona and Colum Cille | Doherty, Rosemarie | Article in Journal | | 2006 |
| Iona and Lindisfarne | Winmill, J. M. | Article in Journal | | 1953 |
| Iona och Rome : den nyare debatten om skotsk och engelsk missionstid | Sundkler, Bengt | Article in Journal | | 1948 |
| Iona's style of government : the toponomastic evidence | MacDonald, Aidan | Article in Journal | | 1985 |
| Ireland : harbinger of the middle ages | Bieler, Ludwig | Monograph or Collective Volume | Oxford University Press | 1963 |
| Ireland and Christendom : the bible and the missions | | Monograph or Collective Volume | | 1987 |
| Ireland and Rome : the double inheritance of Christian Northumbria | Bonner, Gerald | Article in Book | | 1979 |
| Ireland and the antipodes : the heterodoxy of Virgil of Salzburg | Carey, John | Article in Book | | 2000 |
| Ireland and the antipodes : the heterodoxy of Virgil of Salzburg | Carey, John | Article in Journal | | 1989 |
| Ireland and Würzburg in the middle ages | Gwynn, Aubrey | Article in Journal | | 1952 |
| Ireland's contribution to the culture of Northumbria | Bieler, Ludwig | Article in Book | | 1976 |
| Ireland's contribution to the devotion to Old Testament saints | Hennig, John | Article in Journal | | 1965 |
| Ireland's earliest crozier? | O'Carroll, Ellen | Article in Journal | | 2000 |
| Ireland, isle of saints | Cerbelaud-Salagnac, GeorgesDaniel-Rops, Henri | Monograph or Collective Volume | Clonmore & Reynolds | 1966 |
| Iren und Angelsachsen in Mitteldeutschland : Zur vorbonifatianischen Mission in Hessen und Thüringen | Werner, Matthias | Article in Book | | 1982 |
| Irish art in the early Christian period | Henry, Françoise, 1902-1982 | Monograph or Collective Volume | Methuen | 1940 |
| Irish churchmen in pre-Carolingian Europe | Breathnach, Pádraig | Article in Journal | | 1985 |
| Irish early Christian 'wooden' oratories - a suggestion | Wallace, Patrick (Patrick F.) | Article in Journal | | 1982 |
| Irish Field Club Union. Report of the Fourth Triennial Conference and Excursion, held at Sligo, July 12th to 18th, 1904. V - Archaeology | D'Evelyn, Alex., M.D. | Article in Journal | | 1904 |
| Irish high crosses : with the figure sculptures explained | Harbison, Peter | Monograph or Collective Volume | Boyne Valley Honey Company | 1994 |
| Irish influence in England after the synod of Whitby | Kelly, Joseph | Article in Journal | | 1975 |
| Irish iron age and early Christian whetstones | O'Connor, Lily | Article in Journal | | 1991 |
| Irish maritime history. Early period to the Norse invasions | Ó Neill, Séamus | Article in Journal | | 1945 |
| Irish monasticism : origins and early development | Ryan, John | Monograph or Collective Volume | Four Courts | 1992 |
| Irish monks and the transmission of learning | Graham, Hugh | Article in Journal | | 1925 |
| Irish Round Towers: origins and purposes | McDonnell, Hector | Article in Journal | | 2018 |
| Irish saints in a Regensburg litany | Ó Riain, PádraigÓ Riain-Raedel, Dagmar | Article in Book | | 2015 |
| Irish saints in ten countries | Carty, Francis | Monograph or Collective Volume | Duffy | 1942 |
| Irish sculpture of the early tenth century and the work of the 'Muiredach Master': problems of identification and meaning | Stalley, Roger | Article in Journal | | 2014 |
| Irland und Europa -Ireland and Europe. Die Kirche im Frühmittelalter - the early Church | | Monograph or Collective Volume | | 1984 |
| Irlande : pays des tours rondes | Guiffan, Jean | Article in Journal | | 1999 |
| Irlande île des saints : textes choisis par Georges et Bernadette Cerbelaud-Salagnac | Cerbelaud-Salagnac, Georges | Monograph or Collective Volume | Fayard | 1961 |
| Iseal Chiaráin, the Low Place of St Ciarán : where was it situated? | Cox, Liam, 1908-2003 | Article in Journal | | 1951 |
| Island of saints and scholars : myth or reality? | Ó Corráin, Donnchadh | Article in Book | | 2013 |
| Islands of storm : eileáin annraidh | Roy, James Charles | Monograph or Collective Volume | Wolfhound Press | 1991 |
| Isle of the saints : monastic settlement and Christian community in early Ireland | Bitel, Lisa M., 1958- | Monograph or Collective Volume | Cork University Press | 1993 |
| It depends on your standpoint - reflections on the mission and mindset of St Patrick | Harper, A.E.T., Archbishop of Armagh | Article in Journal | | 2012 |
| Ita of Killeedy: the cult of a Saint | Canty, Denis | Article in Journal | | 2018 |
| John Cassian and the development of early Irish Christianity : a study of the state of the literature | Crites, G. J. | Article in Journal | | 2002 |
| Jonathan Swift's Carlow connections | Ryan, Mary Stratton | Article in Journal | | 2012 |
| Kerry's ancient see and shrine, Ardfert-Brendan | Nunan, Francis | Monograph or Collective Volume | Kerryman | 1950 |
| Kilchreest Church and Graveyard | Dolan, Stephen | Article in Journal | | 2015 |
| Kilcock : from St Coca to the Reformation, A.D. 550-1550 | Cullen, Seamus | Article in Book | | 1999 |
| Kilfenora (Feneborensis): a diocese apart | Mac Mahon, Michael | Article in Journal | | 2018 |
| Killeshin : an Irish monastery surveyed | Bhreathnach, Edel | Article in Journal | | 1994 |
| Killeshin and Sletty | Comerford, M., P.P. | Article in Journal | | 1883 |
| Kilranelagh and the Uí Máil | Ní Chon Uladh, Póilín | Article in Journal | | 2000 |
| Kiltoom church and graveyard | Ryan, Hazel A. | Article in Journal | | 1998 |
| Knots and crosses - the Irish cult of St Olave | Duffy, Paul | Article in Journal | | 2019 |
| L'influence Colombanienne à l'abbaye de Maroeuil-en-Artois | Catrin, Paul | Article in Book | | 1951 |
| L'influence de saint Colomban et de ses disciples dans les monastèrer de la Brie | Barrault, A. | Article in Book | | 1951 |
| La 'vita Amandi preima' et les fondations monastiques de S. Amand | Moreau, E. de | Article in Journal | | 1949 |
| La psalmodie chorale dans la Règle de saint Colomban | Cousin, Dom Patrice | Article in Book | | 1951 |
| La validité générale d'une hypothèse : Origines européennes des cultures nahuatl au Mexique pré-colonial, VIe et VIIe siècles | Joyal, Achille | Article in Book | | 1992 |
| Labba Mologa, Co. Cork | Clery, R. M. | Article in Journal | | 2000 |
| Lakeland heritage : antiquities of Fermanagh | Built Heritage | Monograph or Collective Volume | Northern Ireland Environment Agency (Built Heritage) | 2013 |
| Landscape with two saints : how Genovefa of Paris and Brigit of Kildare built Christianity in barbarian Europe | Bitel, Lisa M., 1958- | Monograph or Collective Volume | Oxford University Press | 2009 |
| languages and literacy in mid-first-millenium Ireland: new questions to some old answers | Harvey, Anthony | Article in Book | | 2016 |
| Lasair of Aghavea | Ó Dufaigh, Seosamh | Article in Journal | | 2004 |
| Le congrès international de saint Colomban | Le Bras, Gabriel | Article in Book | | 1951 |
| Le culte de saint Colomban en Bretagne | Le Goff, Abbé J. | Article in Book | | 1951 |
| Le miracle Irlandais | Daniel-Rops, Henri | Article in Book | | 1956 |
| Le Purgatoire de Saint Patrick | Kurzawa, Frédéric | Article in Journal | | 1998 |
| Le séjour de saint Patrice à Auxerre | Louis, Renè | Article in Book | | 1951 |
| Les celticismes des hagiographes irlandais de vii siècle | Picard, Jean-Michel | Article in Journal | | 1992 |
| Les cérémonies du xiv centenaire de saint Colomban | Dubois, Marguerite-Marie | Article in Book | | 1951 |
| Les premiers ermitages et monasteres en Irlande, 400-700 | Herity, Michael | Article in Journal | | 1993 |
| Les rapports de saint Colomban et de la Gaule franque aux vi et vii siécles | Laprat, R. | Article in Book | | 1951 |
| Les sources de la biographie de saint Colomban | Laporte, R. P. D. | Article in Book | | 1951 |
| Les vies de S. Finnbarr de Cork, de S. Finnbarr D'Ecosse et de S. Mac Duilinn de Lusk | Grosjean, Paul | Article in Journal | | 1953 |
| Les Vies de Saint Fursy : les sources Irlandaises | Ó Riain, Pádraig | Article in Journal | | 1986 |
| Les vies de saints bretons les plus anciennes dans leurs rapports avec les Iles brittaniques | Kerlouégan, François | Article in Book | | 1981 |
| Liber de ortu et obitu patriarcharum | Carracedo-Fraga, José | Monograph or Collective Volume | Brepols | 1996 |
| Liber epistolarum sancti Patricii episcopi : the book of letters of saint Patrick the bishop | | Monograph or Collective Volume | Four Courts | 1994 |
| Libri epistolarum Sancti Patricii Episcopi | | Monograph or Collective Volume | Stationery Office for the Irish Manuscripts Commission | 1952 |
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| Libri epistolarum sancti Patricii episcopi : introduction, text and commentary | | Monograph or Collective Volume | Royal Irish Academy | 1994 |
| 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. Malachy | Luddy, Ailbe J. | Monograph or Collective Volume | Llanerch | 1994 |
| Literacy and conversion on Ireland's Roman frontier: from emulation to assimilation? | Johnston, Elva | Article in Book | | 2016 |
| Lives of Saint Moneena | Keane, Desmond John | Thesis | | 1982 |
| Lives of SS Ronan and Lassair | O'Madden, Parick L. | Article in Journal | | 1943 |
| Lives of St. Finnian of Movilla : British evidence | Sperber, Ingrid | Article in Book | | 1997 |
| Living in the ocean | O'Loughlin, Thomas | Article in Book | | 1997 |
| Living with the church in early-medieval Ireland, AD 400-1100 : archaeological perspectives on the sacred and profane | Harney, Lorcan | Thesis | | |
| Lough Derg : St Patrick's purgatory | Curtayne, Alice | Monograph or Collective Volume | Burns & Oates | 1944 |
| Making Christian landscapes in Atlantic Europe : conversion and consolidation in the early Middle Ages | | Monograph or Collective Volume | Cork University Press | 2016 |
| Making Christian landscapes in Corca Dhuibhne | MacCotter, PaulSheehan, JohnÓ Carragáin, Tomás | Article in Journal | | 2011 |
| Man and the Landscape in Ireland | Aalen, F. H. A. | Monograph or Collective Volume | Academic Press | 1978 |
| Manx church origins | Dugdale, D. S. | Monograph or Collective Volume | Llanerch | 1998 |
| Maoldoid of Muckno | Ó Dufaigh, Seosamh | Article in Journal | | 2011 |
| Mapping Death
Burial in Late Iron Age and Early Medieval Ireland | O'Brien, Elizabeth | Monograph or Collective Volume | Four Courts | 2020 |
| Margaret Stokes: an enterprising and pioneering scholar | Bourke, Marie | Article in Journal | | 2020 |
| Markers of heroic death | Swift, Catherine | Article in Book | | 2016 |
| Martyrdom and the rise of missionary hagiography in the Late Merovingian world. | Palmer, James T. | Article in Book | | 2016 |
| Meath souterrains : some thoughts on early Christian distribution patterns | Buckley, Victor | Article in Journal | | 1988 |
| Medieval and monastic Derry : sixth century to 1600 | Lacey, Brian | Monograph or Collective Volume | Four Courts | 2013 |
| Medieval Mayo : churches and abbeys | Harbison, Peter, 1939-2023 | Monograph or Collective Volume | Mayo County Council | 2023 |
| Men, women, the late medieval Church and religion: evidence from wills from county Dublin | Jefferies, Henry A. | Article in Journal | | 2016 |
| Mendicant orders in Ireland | Williams, Bernadette | Article in Book | | 2006 |
| Miscellanea : Tirechán's Sírdruimm, Adomnán's Dorsum Tómme | Lacey, Brian | Article in Journal | | 2002 |
| Miscellanea. Kilfenora Cathedral | O'Neill, Michael | Article in Journal | | 2013 |
| Miscellany. A newly discovered early Christian cross-slab from Portlick, co. Westmeath | O'Reilly, David | Article in Journal | | 2015 |
| Miscellany. I The origins of Irish penetential descipline | Oakley, Thomas P. | Article in Journal | | 1933 |
| Mise Pádraig : nua-aistriú ar Fhaoistin Phádraig agus ar an Litir cun Coroticus | Mac Philibin, LiamPatrick, Saint | Monograph or Collective Volume | FÁS | 1961 |
| Mission and monasticism in the Confessio of Patrick | Herren, Michael | Article in Book | | 1989 |
| Modes of conversion in the early middle ages | Richter, Michael, 1943-2011 | Article in Book | | 1995 |
| Modes of evangelization of western Europe in the seventh century | Hillgarth, J. N. | Article in Book | | 1987 |
| Molaise : abbot of Leighlin and hermit of Holy Isle : the life and legacy of Saint Laisren in Ireland and Scotland | Kenny, Colum | Monograph or Collective Volume | Morrigan Books | 1998 |
| Monasterboice and its monuments | Roe, Helen M. | Monograph or Collective Volume | County Louth Archaeological and Historical Society | 1981 |
| Monasterboice and its monuments | Roe, Helen M. | Monograph or Collective Volume | County Louth Archaeological and Historical Society | 1993 |
| Monastic schools in Ireland and Northumbria before A.D.750 | McNamara, Martin | Article in Journal | | 1990 |
| Monsieur Saint Patrice & St Patrick’s French connec- [sic] | Mongan, Norman | Article in Journal | | 1995 |
| More light on Margaret Stokes and the publication of George Petrie's 'Christian inscriptions in the Irish language' | McEvansoneya, Philip | Article in Journal | | 2011 |
| More on the Balgriffin Cross-Slab | Manning, Conleth | Article in Journal | | 2018 |
| Motival derivations in the 'Life of St Samthann' | Bray, Dorothy Ann | Article in Journal | | 1987 |
| Muirchú and his 'remi cymba': whence his Latin and its wordstore? | Harvey, Anthony | Article in Journal | | 2016 |
| Muirchú’s Patrick: a bishop for the seventh century | Powell, Robert J. | Thesis | | 2011 |
| Muirchú’s theology of conversion in his Vita Patricii | O'Loughlin, Thomas | Article in Book | | 2002 |
| Mullaghbrack | Noel, F. A. | Article in Journal | | 1989 |
| 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 |
| Naomh Colmcille | Mould, Daphne D. C. Pochin | Article in Journal | | 1963 |
| Naomh Gall - Oidhreacht léinn & liteartha an Naoimh Éireannaigh a bhunaigh cathair St Gallen ne hEilbhéise | Trimble, Gearóid | Article in Journal | | 2016 |
| Naomh Pádraig agus foireann na loinge | Ó Raifeartaigh, T. | Article in Journal | | 1983 |
| Naomh Pádraig, an solas is an scéalaíocht | Ó hÓgáin, Dáithí | Article in Book | | 1997 |
| Neo-Pelagianism, early insular religious art, and the image of Christ | Brown, Shirley AnnHerren, Michael W. | Article in Book | | 2001 |
| New light on St. Kilian | Gwynn, Aubrey | Article in Journal | | 1957 |
| New Religious Movements | Mulholland, Peter : Salazar, Carles | Article in Book | Oxford University Press | 2024 |
| Niall O Neill and the twilight of Emain Macha | McKee, James | Article in Journal | | 1994 |
| No true church : was Saint Patrick a Protestant? | McMahon, Michael | Article in Journal | | 1996 |
| Norse Dublin | Curtis, E. | Article in Journal | | 1942 |
| Notes & Documents. Ecclesiastical affairs in Armagh in the ninth and tenth centuries | Mac Airt, Seán | Article in Journal | | 2015 |
| Notes and documents. Some new thoughts about St Patrick | McCormack, Jim | Article in Journal | | 2014 |
| Notes and emendations on the Latin writings of St. Patrick | Hitchcock, F. R. M. | Article in Journal | | 1938 |
| Notes on the relics of St. Patrick | Bourke, Cormac | Article in Journal | | 1989 |
| Notes sur les documents anciens concernant S. Patrice | Grosjean, Paul | Article in Journal | | 1944 |
| Number and symbol in early Christian Irish art | Richardson, Hilary | Article in Journal | | 1984 |
| Observations on the context and landscape of the West Ossory crosses | Bhreathnach, Edel | Article in Book | | 2015 |
| Ogam Stones and the earliest Irish Christians | Swift, Catherine | Monograph or Collective Volume | Department of Old and Middle Irish, St.Patrick's College,Maynooth, | 1997 |
| Ogam stones and the earliest Irish Christians | Swift, Catherine | Monograph or Collective Volume | St. Patrick's College, Department of Old and Middle Irish | 1997 |
| Oilithreacht Phadraig | De Paor, Déaglan | Article in Journal | | 1995 |
| On St Colomban of Bobbio, 1,2 | Chute, Desmond | Article in Journal | | 1949 |
| On the possible functions of the accents in the Gaelic notes in the Book of Deer | Ó Maolalaigh, Roibeard | Article in Book | | 2008 |
| On the shape of the insular tonsure | Mc Carthy, Daniel P., 1945- | Article in Journal | | 2003 |
| Once more on Proclus, the Virgin Mary and the Irish | Woods, David | Article in Journal | | 2014 |
| Oriental eremitical motifs in the Navigatio Sancti Brendani | Fagnoni, Anna Maria | Article in Book | | 2006 |
| Orosius, Ireland and Christianity | Ó Corráin, Donnchadh | Article in Journal | | 2017 |
| Oswald, saint of kings | Lavery, Pamela | Monograph or Collective Volume | | 1980 |
| Our greatest exile | Ó Faracháin, Roibeárd | Article in Journal | | 1939 |
| Over the writer's shoulder : Saint Abban | Heist, W. W. | Article in Journal | | 1976 |
| Pádraig Misinéir | Ó Maolfabhail, Art | Article in Journal | | 2019 |
| Pádraig Ó Riain | Anonymous | Article in Book | | 2004 |
| Paenitentiarium S. Maol Ruain | Mooney, Canice | Article in Journal | | 1954 |
| Pagan example and Christian practice : a reconsideration | Ó Riain, Pádraig | Article in Book | | 1995 |
| Pagan or Christian? Burial in Ireland during the 5th to 8th centuries | O'Brien, Elizabeth | Article in Book | | 2009 |
| Pagan survivals : the evidence of early Irish narrative | Ó Cathasaigh, Tomás | Article in Book | | 1984 |
| Pagans and holymen 600-800 | Wood, Ian N. | Article in Book | | 1987 |
| Palladius agus Patricius | Ryan, John | Article in Journal | | 1942 |
| Palladius and Patrick | Thomas, Charles | Article in Book | | 2004 |
| Parentage, birth, and early years of St Ciaran | Cox, Liam, 1908-2003 | Article in Journal | | 1946 |
| Paths of exile : narratives of St Columba and the praxis of Iona | Lewis, James | Monograph or Collective Volume | Cloverdale Books | 2007 |
| Patrician Donegal | Ó Gallachair, Pádraig | Article in Journal | | 1961 |
| Patrician studies in the 'Irish Ecclesiastial Record' | Bieler, Ludwig | Article in Journal | | 1964 |
| Patriciology : reflections on the present state of Patrician studies | Bieler, Ludwig | Article in Journal | | 1962 |
| Patrick : from patron saint to modern influencer | Hopkin, Alannah | Monograph or Collective Volume | New Island Books | 2023 |
| Patrick and his biographers ancient and modern | Binchy, D. A. (Daniel Anthony), 1900-1989 | Article in Journal | | 1962 |
| Patrick and the Kings : apropos a new chronology of St Patrick | Bieler, Ludwig | Article in Journal | | 1956 |
| Patrick in his own words | Duffy, Joseph | Monograph or Collective Volume | Veritas | 1972 |
| Patrick's conversion of Ireland to Christianity and the establishment of Armagh | Swift, Catherine | Article in Book | | 2006 |
| Patrick, Armagh and Emain Macha | Lambkin, B. K. | Article in Journal | | 1987 |
| Patrick, Brigid and Colmcille | Donnelly, Maureen | Monograph or Collective Volume | Donard Publishing Co. | 1977 |
| Patrick, comets and Christianity | Baillie, M. G. L. | Article in Journal | | 1995 |
| Patristic background to medieval Irish ecclesiastical sources | McNamara, Martin | Article in Book | | 1995 |
| Pelagianism and the "Common Celtic Church" | Márkus, Gilbert | Article in Journal | | 2005 |
| Perceptions of pagan and Christian : from Patrick to Gregory the Great | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2016 |
| Personal names | Daly, Eugene | Article in Journal | | 2014 |
| Perspectives on conversion in Wales | Edwards, Nancy | Article in Book | | 2016 |
| Pfarrei Kaundort. Saint Pirmin 12 centenaire. Festschrift zum zwölfhundertjährigen Jubiläum des Ardennenheiligen St. Pirmin, 753-1953 | | Monograph or Collective Volume | Paulusdruckerei | 1953 |
| Place-names and the early church in eastern Scotland | Taylor, Simon, 1950- | Article in Book | | 1996 |
| Plebs : concepts of community among Late Antique Britons | Woolf, Alex | Article in Book | | 2016 |
| Poème de saint Patrice sur une dent tombée | Vendryes, J. | Article in Journal | | 1938 |
| Pope Gregory the Great and the Irish | Martyn, John R. C. | Article in Journal | | 2005 |
| Portrait of St Columban | MacCarthy, Edward J. | Article in Book | | 1951 |
| Post-mortem on the second Patrick | Shaw, Francis | Article in Journal | | 1962 |
| Powerful women or patriarchal weapons? Two medieval Irish saints | Johnston, Elva | Article in Journal | | 2001 |
| Prehistoric and early Christian Bray | Swan, Leo, 1930-2001 | Article in Book | | 1989 |
| Prehistoric and early Christian Ireland | Ó Corráin, Donnchadh | Article in Book | | 1992 |
| Probleme der Pirminforschung | Tüchle, Hermann | Article in Journal | | 1952 |
| Prophets and evangelists (speaking from stone) | King, Heather | Article in Journal | | 1994 |
| Psalms and psalm books | O'Neill, Timothy, 1947- | Article in Book | NA | 2013 |
| Quatuor sanctissimi episcopi : Irish saints before St Patrick | Sharpe, Richard | Article in Book | | 1989 |
| Re-discovering St Willibrord, patron saint of Luxembourg and his County Carlow connection | Mulligan, Dermot | Article in Journal | | 2018 |
| Reading annalistic obituaries as biography | Byrne, Paul | Article in Journal | | 2018 |
| Recognising Christian origins : an archaeological and historical dilemma | Thomas, Charles | Article in Book | | 1986 |
| Relationes inter Italiam et Hiberniam : de Donato Scoto Faesularum episcopo | Marongiu, Paula | Article in Journal | | 1998 |
| Relationship between music and the supernatural as that is portrayed in early medieval Irish literature | O'Keefe, Karen Maeve | Thesis | | |
| Religion and society in Ireland | Stancliffe, Clare | Article in Book | | 2005 |
| Religious change and frontier management : reassessing conversion in fourth- and fifth-century Ireland | Johnston, Elva | Article in Journal | | 2018 |
| Remains of a second pre-romanesque church at Inchcleraun on Lough Ree | Manning, Conleth | Article in Journal | | 2012 |
| Representations of St Patrick | Harbison, Peter | Article in Book | | 2004 |
| Rev. John McErlean on 'Silva Focluti' | Larkin, Aidan J. | Article in Journal | | 1982 |
| Review article. Liturgy and asceticism : recent works on early Irish theology | Ritari, Katja | Article in Journal | | 2012 |
| Review article. The 'reform' of the Irish church in the eleventh and twelfth centuries | Etchingham, Colmán | Article in Journal | | 2011 |
| Review of Bieler (L.), 'The life and legend of St Patrick', 1949 | Shepherd, M. H., Jr. | Article in Journal | | 1951 |
| Review of Bieler (L.), 'The life and legend of St Patrick', 1949 | Cordoliani, A. | Article in Journal | | 1951 |
| Review of L. Bieler, 'The life and legend of St Patrick', 1949 | Hennig, John | Article in Journal | | 1950 |
| Ritual backgrounnd of Celtic heroes and saints - a study of some of the survivals of pagan elements in early Celtic christianity | Rees, A.D. | Thesis | | 1937 |
| Rogue Bishops Around the Irish Sea Before the Mid-Twelfth Century | Brady, Lindy | Article in Journal | | 2020 |
| Romanesque graveslab from Roscommon Town | S., A. | Article in Journal | | 1996 |
| Royalty and the Church in Ireland and Britain to A.D. 1050 | Schaffer, Bridgitte | Thesis | | |
| S. Ciarán's church and his lands: a study of the history and development of Clonmacnois | Kehnel, Annette | Thesis | | 1995 |
| S. Finnian of Clonard | Hughes, Kathleen | Thesis | | |
| S. Patrice d'Irlande et quelques homonymes dans les anciens martyrologes | Grosjean, Paul | Article in Journal | | 1950 |
| Sacred time in early Christian Ireland : the monks of the Navigatio and the Céli Dé in dialogue to explore the theologies of time and the Liturgy of the Hours in pre-Viking Ireland | Rumsey, Patricia M. | Monograph or Collective Volume | Continuum / T & T Clark | 2007 |
| Sacred time in early Christian Ireland : the Nauigatio and the Céilí Dé in dialogue to explore the theologies of time and the liturgy of the hours in pre-Viking Ireland | Rumsey, Patricia M. | Thesis | | |
| Saint Aidan in England | Wallace-Hadrill, J. M. | Article in Book | | 1963 |
| Saint Brecán of Clare | O'Sullivan, Anne | Article in Journal | | 1983 |
| Saint Bricin of Tomregan | O'Reilly, EugeneO'Reilly, John | Article in Journal | | 1987 |
| Saint Brigid | Mould, Daphne D. C. Pochin | Monograph or Collective Volume | Clonmore & Reynolds | 1965 |
| Saint Brigid - the saint who emerged from the Celtic mist | Clare, Liam | Monograph or Collective Volume | Foxrock Local History Club | 2002 |
| Saint Brigid and the shrines of Kildare | Mac Suibhne, PeadarMcCormack, Patrick | Monograph or Collective Volume | Leinster Leader | 1973 |
| Saint Brigid of Ireland | Curtayne, Alice | Monograph or Collective Volume | Browne and Nolan | 1955 |
| Saint Brigit and the fire from heaven | Bray, Dorothy Ann | Article in Journal | | 1992 |
| Saint Cathaldus of Taranto | Mooney, Canice | Article in Book | | 1963 |
| Saint Colman of Cloyne | Halliden, Patrick | Article in Book | | 1994 |
| Saint Colmcille in Ireland and Scotland | Ó Fiaich, Tomás | Article in Book | | 1963 |
| Saint Colomban et Faverney | Pirolley, E. | Article in Book | | 1951 |
| Saint Colomban et la papauté d'après le Épitres | Bardy, Gustave | Article in Book | | 1951 |
| Saint Colomban et saint Omer | Coolen, Géorges | Article in Book | | 1951 |
| Saint Colomban et ses disciples | Dubois, Marguerite-Marie | Article in Book | | 1956 |
| Saint Colomban, saint Gall et la formation de la Suisse | Reynold, Gonzague de | Article in Book | | 1956 |
| Saint Colomban, son âme et sa vie | Laporte, Jean | Article in Journal | | 1949 |
| Saint Columba of Iona : a study of his life, his times, and his influence | Menzies, Lucy | Monograph or Collective Volume | J. M. F. books | 1992 |
| Saint Columban | MacManus, Francis | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| Saint Columban : a pioneer of western civilization | Du Bois, Marguerite MarieO'Carroll, Jim | Monograph or Collective Volume | Gill | 1961 |
| Saint Columbanus | Dubois, Marguerite-Marie | Article in Book | | 1963 |
| Saint Columbanus pilgrim for Christ | Larkin, Aidan J. | Monograph or Collective Volume | Missionary Society of Saint Columban|Cumann Seanchais Ard Macha (Armagh Historical Society) | 2012 |
| Saint Erc's Hermitage | Knight, George | Article in Journal | | 2024 |
| Saint Finbar of Cork | Mould, Daphne D. C. Pochin | Monograph or Collective Volume | C.T.S.I. | 1965 |
| Saint Finbarr of Cork | MacCarthy, Charles | Article in Journal | | 1943 |
| Saint Finnian of Clonard | Hughes, Kathleen | Article in Journal | | 1952 |
| Saint Gall in Switzerland | Hertling, Ludwig | Article in Book | | 1963 |
| Saint Malachie vu par saint Bernard | Masseron, Alexandre | Article in Book | | 1956 |
| Saint Malachy | Ó Muirí, Réamonn | Article in Journal | | 2000 |
| Saint Malachy of Armagh (1095-1148) | Morrison, Stanley S. | Article in Journal | | 1948 |
| Saint Marcan's Loch and the early ecclesiastical ruins at Rossclave | Gullane, P. J. | Article in Journal | | 1986 |
| Saint Mochaoi and Nendrum | Towill, E. S. | Article in Journal | | 1964 |
| Saint Moling Luachra : a pilgrimage from Sliabh Luachra to Rinn Ros Broic above the stream-polls of the Barrow | | Monograph or Collective Volume | Columba | 2001 |
| Saint Ninian : some outstanding problems | Boyle, Alexander | Article in Journal | | 1968 |
| Saint Patrice et les origines chrétiennes de l'Irlande | Cristiani, L. | Article in Book | | 1956 |
| Saint Patrick | | Monograph or Collective Volume | Stationery Office for Radio Éireann | 1958 |
| Saint Patrick : apostle of Ireland | De Blacam, Aodh | Monograph or Collective Volume | Bruce Publishing Co. | 1941 |
| Saint Patrick : confession et Lettre à Coroticus | Hanson, Richard P. C. | Monograph or Collective Volume | [s.n.] | 1978 |
| Saint Patrick : his origins and career | Hanson, R. P. C. | Monograph or Collective Volume | Clarendon Press | 1968 |
| Saint Patrick : his writings and Muirchús 'Life' | Hood, A. B. E.Patrick, Saint | Monograph or Collective Volume | Phillimore | 1978 |
| Saint Patrick among the Uí Tuirtre | Ó Doibhlin, Diarmaid | Article in Journal | | 1980 |
| Saint Patrick and Coroticus | Thompson, E. A. | Article in Journal | | 1980 |
| Saint Patrick and how he is remembered | Ó Dulaigh, Seosamh | Article in Journal | | 1995 |
| Saint Patrick and the Armorican forest | Anonymous | Article in Journal | | 1996 |
| Saint Patrick and the Downpatrick area | Donnelly, Maureen | Monograph or Collective Volume | The author | 1981 |
| Saint Patrick in Ormond | Gleeson, Dermot F. | Article in Journal | | 1958 |
| Saint Patrick statue | Perry, Gerald | Article in Journal | | 2000 |
| Saint Patrick's journey into the desert : Confessio 16-28 as ascetic discourse | Hayes-Healy, Stephanie | Article in Journal | | 2005 |
| Saint Patrick's Purgatory, Lough Derg | McGuinness, Joseph | Monograph or Collective Volume | Columba | 2000 |
| Saint Patrick's twenty-eight days' journey | Ó Raifeartaigh, T. | Article in Journal | | 1969 |
| Saint Patrick's world : the Christian culture of Ireland's apostolic age | De Paor, Liam | Monograph or Collective Volume | Four Courts and the University of Notre Dame Press | 1993 |
| Saint Patrick, apostle of Ireland | Cerbelaud-Salagnac, GeorgesMurphy, Fergus | Monograph or Collective Volume | Clonmore & Reynolds | 1960 |
| Saint Patrick, the Druids, and the end of the world | Carey, John | Article in Journal | | 1996 |
| Saint Patrick: Life, Legend and Legacy | Broderick, Marian | Monograph or Collective Volume | The O'Brien Press | 2019 |
| Saint Rónán of Brittany, a path of penitence recalled | Ní Mheara, R. | Article in Journal | | 2004 |
| Saint Senan's well at Doonass | Burke, Freddie | Article in Journal | | 1994 |
| Saints d'Irlande : analyse critique des sources hagiographiques (VIIe-IXe siècles) | Stalmans, Nathalie | Monograph or Collective Volume | Presses Univ. de Rennes | 2003 |
| Saints, scholars and science in early medieval Ireland | Ó Cróinín, Dáibhí | Article in Book | | 2013 |
| Saints, seaways and dispute settlements | Watkin, Thomas Glyn, 1952- | Article in Book | | 1991 |
| San Patricio y los irlandeses : el descubrimiento de una escultura | Hernández García, José Javier | Article in Journal | | 2007 |
| Sankt Columban in Tuggen | Kilger, Laurenz | Article in Book | | 1951 |
| Saxon or Celt? Cædmon, The Seafarer, and the Irish tradition | Atherton, Mark | Article in Book | | 2002 |
| Scoti Peregrini in Sankt Jakob : 800 Jahre Irisch-Schottische Kultur in Regensburg | | Monograph or Collective Volume | Verlag Schnell & Steiner | 2005 |
| Scriptural ethos snd imitation : the Pauline epistles and St. Patrick's "Confessio" | Stone, Brian J. | Article in Journal | | 2014 |
| Scripture in stone : the high cross at Moone | Clancy, Finbarr G. | Article in Book | | 2013 |
| Séadchomharthaí Chuilmchille | De Paor, Liam | Article in Journal | | 1963 |
| Seagoe Church and Baroness Von Stieglitz | Dixon, Terrence | Article in Journal | | 2017 |
| Secret sights II : unknown medieval Ireland | Vance, Robert | Monograph or Collective Volume | Ashfield | 2005 |
| Secundinus - The Lost Apostle of Ireland | French, Noel | Article in Journal | | 2024 |
| Sermons in stone | Harbison, Peter | Article in Journal | | 2009 |
| Sermons on St Patrick on the continent | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| Shaping the saint : rewiriting tradition in the early lives of St Cuthbert | Thacker, Alan | Article in Book | | 2016 |
| Sidelights on the chronology of St Patrick | Bieler, Ludwig | Article in Journal | | 1949 |
| Silva Focluti | Bieler, Ludwig | Article in Journal | | 1942 |
| Silva Focluti | MacErlean, John | Article in Journal | | 1939 |
| Sleananus, linking Inishboheen and Kilnamanagh: an ancient route from the coast? Tales, traditions and personalities of East Wicklow | Hannigan, Ken | Article in Journal | | 2016 |
| Sliabh ua nAilealla and Bearnas ua nAilealla | Connellan, M. J. | Article in Journal | | 1950 |
| Sliocht Lachlain Maguire (1300-1600). Ecclesiastics of the Erne | Schlegel, Donald M.
| Article in Journal | | 2013 |
| Snake-bosses and redemption at Iona and in Pictland | MacLean, Douglas | Article in Book | | 1993 |
| Some aspects of Early Irish Eucharistic devotion | McNamara, Martin | Article in Book | | 2012 |
| Some aspects of hagiography in the Celtic church | Bray, Dorothy Ann | Article in Journal | | 1982 |
| Some aspects of the relationship between secular and ecclesiastical learning in Ireland and England in the early post-conversion period | Moisl, Hermann | Thesis | | |
| Some comments on the date of compilation of the "Apgitir Chrábaid" | Haggart, Craig | Article in Journal | | 2009 |
| Some early Christian slabs from Fuerty and Clontuskert | Siggins, Albert | Article in Journal | | 1988 |
| Some northern sundials and time-keeping in the early Irish church | Hamlin, Ann | Article in Book | | 1987 |
| Some notes on early Christianity in Co. Donegal | Silke, John J. | Article in Journal | | 1987 |
| Some notes on the history of Oughterard | McCabe, Brian | Article in Journal | | 2015 |
| Some Patrician sites of eastern Connacht | Nicholls, K. W. (Kenneth W.) | Article in Journal | | 1973 |
| Some tentative deductions arising from the study of three ancient monuments in Northern Ireland | Lawlor, H.C. | Article in Journal | | 1930 |
| Sonne und Kreuz : Irland zursihen megalithkultur und frühem Christentum | Streit, Jacob | Monograph or Collective Volume | Verlag Freies Geistesleben | 1977 |
| Sources for the life of St Mogue | O'Connell, Philip | Article in Journal | | 1959 |
| St Abban : the genesis of an Irish saint's life | Ó Riain, Pádraig | Article in Book | | 1986 |
| St Brigid and Glastonbury | Robinson, John L. | Article in Journal | | 1953 |
| St Brigit - who was she? | Bhreathnach, Edel | Article in Journal | | 2024 |
| St Brigit and the fire from heaven | Bray, Dorothy Ann | Article in Journal | | 1992 |
| St Brocaidh of Imliuch Brocadha | Connellan, M. J. | Article in Journal | | 1949 |
| St Canice’s Muckalee : an early Christian site | O'Shea, Mary | Article in Journal | | 1995 |
| St Colmcille : the prince | Ryan, John | Article in Journal | | 1963 |
| St Colmcille in the folklore of the Donegal Bay area | Meehan, Helen | Article in Journal | | 2004 |
| St Columba and his lay contemporaries in Scotland and Ireland | MacQuarrie, Alan D. | Article in Journal | | 1994 |
| St Columba and his mission | Emerson, N. D. | Monograph or Collective Volume | A.P.C.K. | 1963 |
| St Columba of Derry and Iona | Ryan, John | Article in Journal | | 1963 |
| St Columbanus on penance | Mitchell, Gerard | Article in Journal | | 1951 |
| St Columkille, 521-597 | Murray, Desmond | Article in Journal | | 1944 |
| St Damhnat | O'Daly, B. | Article in Journal | | 1949 |
| St Declan's church | Quain, James T. | Article in Journal | | 1987 |
| St Ernan of Cluan Deochra | Gray, P. | Article in Journal | | 1943 |
| St Fiacre | Maher, Edward | Article in Journal | | 1961 |
| St Finian's College, Navan and Mullingar | McCormack, Christopher F. | Article in Journal | | 2017 |
| St Fintan of Clonenagh | Millar, Seamus | Article in Journal | | 1973 |
| St Germanus of Auxerre and the end of Roman Britain | Thompson, E. A. | Monograph or Collective Volume | [s.n.] | 1988 |
| St Iníon Baoith alias St Winifred and the Tau cross of Killinaboy | Mac Mahon, Michael | Article in Journal | | 2017 |
| St John the Baptist on Irish high crosses | Harbison, Peter | Article in Book | | 2013 |
| St Lachtain of Lislaughtin: the Cork connection | Murphy, Donal | Article in Journal | | 2010 |
| St Leonard in Ireland | Hennig, John | Article in Journal | | 1945 |
| St Machar : some linguistic light? | Ó Baoill, Colm | Article in Journal | | 1993 |
| St Maelruan | Ranson, Joseph | Article in Journal | | 1949 |
| St Malachy in life and death | Ó Fiaich, Tomás | Article in Book | | 2013 |
| St Martin and his biographer : history and miracle in Sulpicius Severus | Stancliffe, Clare | Monograph or Collective Volume | Clarendon Press | 1983 |
| St Mochua c.570-630 AD | Cullen, Seamus | Article in Journal | | 2008 |
| St Moling, contemplative Christianity and the medieval landscape of south Carlow : biblical style in the poem Gáir na Gairbhe | de Paor, Máire B. | Article in Book | | 2008 |
| St Palladius and the diocese of Ferns | SNX. P. | Article in Journal | | 1921 |
| St Patrick : Bury versus Slemish : a Patrician problem | MacNeill, EoinRyan, John | Article in Book | | 1973 |
| St Patrick : his crozier; his writings | Mac Giolla Phádraig, B. | Article in Journal | | 1970 |
| St Patrick : the real story of Patrick who became Ireland's patron saint | Simms, George Otto | Monograph or Collective Volume | O'Brien Press | 1991 |
| St Patrick and Armagh | Ó Fiaich, Tomás | Article in Journal | | 1995 |
| St Patrick and Armagh - a symposium : 4, St Secundinus and Armagh | Bieler, Ludwig | Article in Journal | | 1956 |
| St Patrick and Armagh, a symposium : 2, the chronology of St Patrick | Mac Airt, Seán | Article in Journal | | 1956 |
| St Patrick and Armagh, a symposium : 5, Professor Carney's arguments | MacDermott, Michael | Article in Journal | | 1956 |
| St Patrick and Celtic spirituality | McSweeney, John | Article in Journal | | 1990 |
| St Patrick and Co. Louth | McDermott, Mamie | Article in Journal | | 1990 |
| St Patrick and Rome | Gwynn, Aubrey | Article in Journal | | 1961 |
| St Patrick and the civilizing of Ireland | Murphy, Gerard | Article in Journal | | 1953 |
| St Patrick at Glastonbury | Fenning, H. P. R. | Article in Journal | | 1967 |
| St Patrick in Ireland : the early years reconsidered | Warner, Richard | Article in Journal | | 1995 |
| St Patrick's Confession and the Book of Armagh | Powell, Douglas | Article in Journal | | 1972 |
| St Patrick's Cross, Cashel : a re-assessment | O'Farrell, Fergus | Article in Journal | | 2006 |
| St Patrick's itinerary through county Limerick | Bairead, F. | Article in Journal | | 1944 |
| St Patrick's letters : a study of their theological dimension by Daniel Conneely | | Monograph or Collective Volume | An Sagart | 1992 |
| St Patrick's other island | Brophy, P. J. | Article in Journal | | 1951 |
| St Patrick's two crossings of the Shannon | Connellan, M. J. | Article in Journal | | 1951 |
| St Patrick's world : the Christian culture of Ireland's apostolic age | De Paor, Liam | Monograph or Collective Volume | [s.n.] | 1993 |
| St Patrick, a British missionary bishop | Hanson, R. P. C. | Monograph or Collective Volume | University of Nottingham | 1965 |
| St Patrick, apostle of Ireland | Ryan, John | Article in Journal | | 1961 |
| St Willibrord | Seiler, Emile | Article in Journal | | 2000 |
| St. Buite, Mellifont ad Toberboie | Manning, Conleth | Article in Journal | | 1984 |
| St. Colman of Stradbally | O'Dooley, Johanna | Article in Journal | | 1979 |
| St. Columba's, the old church at Straid, Clonmany, Inishowen | McWilliams, Catherine | Article in Journal | | 2003 |
| St. Finbarr and early Christian settlement | Ó Riain, Pádraig | Article in Book | | 2005 |
| St. Finnian of Movilla : Briton, Gael, ghost? | Dumville, David N. | Article in Book | | 1997 |
| St. Garbhan | Kelly, JamesRansen, Joseph | Article in Journal | | 2001 |
| St. Gobnett of Ballyvourney | Anonymous | Article in Journal | | 1978 |
| St. Munna of Taghmon | Culleton, Edward | Article in Journal | | 1997 |
| St. Patrick | MacReamoinn, Seán | Article in Journal | | 1987 |
| St. Patrick and Armagh | Ó Fiaich, Tomás | Article in Journal | | 1958 |
| St. Patrick and Coroticus | Thompson, E. A. | Article in Journal | | 1980 |
| St. Patrick and Ireland | Corish, Patrick J. | Article in Journal | | 1961 |
| St. Patrick and Irish Christian origins | Wilson, P. A. | Article in Journal | | 1980 |
| St. Patrick and Irish Christianity | Corfe, Tom | Monograph or Collective Volume | Cambridge University Press | 1973 |
| St. Patrick in county Carlow | Burns, C. | Article in Journal | | 1984 |
| St. Patrick's "First Synod" | Binchy, D. A. (Daniel Anthony), 1900-1989 | Article in Journal | | 1968 |
| St. Patrick's 'Confessio' and the 'Book of Armagh' | Esposito, Mario | Article in Journal | | 1954 |
| St. Patrick's writings | | Monograph or Collective Volume | Dundalgan Press | 1961 |
| St. Pirminius und Pirminiuslande im Licht der Namenforschung | Christmann, Ernst | Article in Journal | | 1953 |
| St. Severin and St. Patrick : a parallel | Bieler, Ludwig | Article in Journal | | 1955 |
| Stockrearing in early Christian Ireland | McCormick, Finbar | Thesis | | |
| Studies in the layout, buildings and art in stone of early Irish monasteries | Herity, Michael | Monograph or Collective Volume | Pindar | 1995 |
| Studies of the liturgy of the early Irish church | Hennig, John | Article in Journal | | 1951 |
| Studies on the life and legend of St Patrick | Bieler, LudwigSharpe, Richard | Monograph or Collective Volume | Variorum | 1986 |
| Sun and cross : from Megalithic culture to early christianity in Ireland | Streit, Jacob | Monograph or Collective Volume | Floris | 2004 |
| Survey of recent publications : II, Patrician studies | Meehan, Denis | Article in Journal | | 1954 |
| Survivals of organisation of the early Irish church in late medieval and early modern Irish society | Barry, John | Thesis | | 1949 |
| Symbolism of the Celtic Cross | Bryce, Derek | Monograph or Collective Volume | Llanerch | 1994 |
| Tamhlachta : the map of plague burials and some implications for early Irish history | Haley, Gene C. | Article in Journal | | 2002 |
| Ten thousand saints : a study in Irish and European origins | Butler, Hubert | Monograph or Collective Volume | Wellbrook Press | 1972 |
| Ten thousand saints : a study in Irish and European origins | Butler, Hubert | Monograph or Collective Volume | Lilliput Press | 1972 |
| Tensions over time: Conflicting understanding of monastic prayer in late-eighth-century-Armagh | Rumsey, Patricia | Article in Journal | | 2015 |
| Territoriality and the cult of Saint Ciarán of Saigir | Connon, Anne | Article in Book | | 2016 |
| Testing the evidence for northern North Atlantic papar : a cave site in southern Iceland | Ahronson, Kristján | Article in Book | | 2002 |
| Textes hagiographiques Irlandais | Grosjean, Paul | Article in Journal | | 1937 |
| The "Christian Society" of Garret Fitzgerald and Pierre Elliott Trudeau | Dunlop, Joseph | Article in Journal | | 2009 |
| The "Monasticon Hibernicum Project" : a research tool for early and medieval ecclesiastical settlement in Ireland | Mac Shamhráin, Ailbhe | Article in Journal | | 2008 |
| The 'Céli Dé' and the early medieval Irish church : a reassessment | Haggart, Craig | Article in Journal | | 2006 |
| The 'Notulae' in the Book of Armagh | Bieler, Ludwig | Article in Journal | | 1954 |
| The 'pagan' and 'Christian' identities of the Irish female | Johnston, Elva | Article in Book | | 2002 |
| The 'papal letters to the Irish' cited by Bede : how did he get them? | Herren, Michael | Article in Book | | 2015 |
| The 'Shannon' shrine : a suggested provenance | Ó Floinn, Raghnall | Article in Book | | 2015 |
| The abbot and the monastic community in the Gaelic churches, 550 to 800 | Pettiau, Hérold | Article in Book | | 2006 |
| The Abuse Crises in the Irish Christian Churches | Gallen, James | Article in Book | Oxford University Press | 2024 |
| The Acallam: the Church’s eventual acceptance of the cultural inheritance of pagan Ireland. | Roe, Harry | Article in Book | | 2013 |
| The alliance between church and state in early medieval Alba | Veitch, Kenneth | Article in Journal | | 1998 |
| The Anglo-Norman conquest of Ireland and St Patrick | Szövérffy, Joseph | Article in Journal | | 1958 |
| The archaeology of early Christianity in the north of Ireland | Hamlin, Ann | Thesis | | |
| The archaeology of early Christianity in the North of Ireland | Hamlin, AnnKerr, Thomas R. (Thomas Robert), 1972- | Monograph or Collective Volume | Archaeopress | 2007 |
| The archaeology of the early medieval Celtic churches : an introduction | Edwards, Nancy | Article in Book | | 2009 |
| The banishing of the snakes by Saint Patrick, but not from Ireland | Perry, Gerald | Article in Journal | | 2000 |
| The Barbarian Conversion from Paganism to Christianity | Fletcher, Richard | Article in Book | | 2008 |
| The Bible and the Apocrypha in the early Irish church (AD 600 - 1200) : collected essays | McNamara, Martin | Monograph or Collective Volume | Brehols | 2015 |
| The Bible in Ireland (A.D. 600-1150) | McNamara, Martin | Article in Journal | | 1976 |
| The Bible in Irish spirituality | McNamara, Martin | Article in Book | | 1981 |
| The bibles of Saint Columba | Márkus, Gilbert | Article in Journal | | 1993 |
| The biblical text of the Book of Deer : evidence for the remains of a division system from its manuscript ancestry. APPENDIX: A concordance of the display initials of the Book of Deer with the Ammonian sections / Eusebian canons; | O'Loughlin, Thomas | Article in Book | | 2008 |
| The Big Book | Kostick, Conor | Article in Journal | | 2017 |
| The Book of Armagh : the Patrician documents | | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1937 |
| The Book of Deer after c. 1150. Appendix : Unpublished writings by Henry Bradshaw concerning the Book of Deer | Zutshi, Patrick | Article in Book | | 2008 |
| The Book of Durrow and the question of programme | Werner, Martin | Article in Journal | | 1997 |
| The Book of Kells | Meehan, Bernard | Monograph or Collective Volume | Thames & Hudson | 2012 |
| The book of Kells : its function and audience | Farr, Carol Ann | Monograph or Collective Volume | British Library and University of Toronto Press | 1997 |
| The Book of Kells and Iona | Mayvaert, Paul | Article in Journal | | 1989 |
| The book of letters of Saint Patrick the bishop | Howlett, David R. | Monograph or Collective Volume | Four Courts | 1994 |
| The Britons | Snyder, Christopher Allen | Monograph or Collective Volume | Blackwell Publishers | 2003 |
| The burning of the Church of St Peter and Paul in Orr St - July 22 1935 | O Coileain, Noel | Article in Journal | | 2008 |
| The cathedral church of St Patrick Armagh | Anonymous | Monograph or Collective Volume | Cathedral Church of St Patrick | 1990 |
| The Céli Dé - monastic reforms in 8th and 9th century Ireland | McCafferty, John | Article in Journal | | 1989 |
| The Celtic background of Anglo-Saxon England | Chadwick, Nora Kershaw, 1891-1972 | Article in Journal | | 1947 |
| The Celtic church and the papacy | Hughes, Kathleen | Article in Book | | 1965 |
| The Celtic churches : a history, AD 200-1200 | McNeill, J. T. | Monograph or Collective Volume | Chicago University Press | 1974 |
| 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 Celtic liturgies historically considered | Gougaud, L. | Article in Journal | | 1930 |
| The Celtic monk : rules and writings of early Irish monks | Ó Maidín, Uinseann | Monograph or Collective Volume | Cistercian Publications | 1996 |
| The Celtic realms | Chadwick, Nora Kershaw, 1891-1972Dillon, Myles | Monograph or Collective Volume | | 1967 |
| The Celtic West | Chadwick, Nora Kershaw, 1891-1972 | Article in Book | | 1952 |
| The Celtic west and Europe : studies in Celtic literature and the early Irish church | Edel, Doris | Monograph or Collective Volume | Four Courts | 2001 |
| The Cenél nEóghain of Inishowen: Aldfrith of Northumbria's Donegal cousins? | Lacey, Brian | Article in Journal | | 2018 |
| The challenge of writing histories of 'women': the case of women and the law in late medieval Ireland | Booker, Sparky | Article in Journal | | 2022 |
| The Chancellorship of medieval Leighlin | O'Brien, Niall C.E.J. | Article in Journal | | 2019 |
| The Christian mission | Corish, Patrick J. | Monograph or Collective Volume | Gill | 1972 |
| The Christianisation of the Dublin Vikings | Clarke, Howard B. | Article in Book | | 2006 |
| The Christianization of society | Pryce, Huw | Article in Book | | 2003 |
| The chronology of Saint Columban. 1 | O'Carroll, Jim | Article in Journal | | 1957 |
| The chronology of St Brigit of Kildare | Mc Carthy, Daniel P., 1945- | Article in Journal | | 2000 |
| The chronology of the life of St Ciaran of Clonmacnois | MacNamee, James Joseph | Article in Journal | | 1945 |
| The church and the native tradition of learning in early medieval Ireland | Moisl, Hermann | Article in Book | | 1987 |
| The church and the world in early Christian Ireland | Hughes, Kathleen | Article in Journal | | 1962 |
| The Church and war : papers read at the Twenty-first Summer Meeting and the Twenty-second Winter Meeting of the Ecclesiastical History Society | | Monograph or Collective Volume | | 1983 |
| The church in early Irish society | Hughes, Kathleen Winifred | Monograph or Collective Volume | Methuen | 1966 |
| The Church of Ireland AD 432-1932. The Report of the Church of Ireland Conference held in Dublin, 11th-14th October, 1932, to which is appended on account of the commemoration by the Church of Ireland of 1500th anniversary of the landing of St Patrick | | Monograph or Collective Volume | | 1932 |
| The churches founded by Saint Patrick | Mac Airt, Seán | Article in Book | | 1958 |
| The Cistercian abbey of Deer | Fawcett, Richard | Article in Book | | 2008 |
| The city of Glendalough | Long, Harry | Article in Journal | | 1996 |
| The colloquy of the old men (Acallam na Senorach) | Harmon, Maurice | Monograph or Collective Volume | Academica Press | 2001 |
| The coming of Christianity | De Paor, Liam | Article in Book | | 1986 |
| The comparative method and early Medieval religious conversion | Wickham, Chris | Article in Book | | 2016 |
| The concept of purgatory in ninth-century Ireland | Etchingham, Colmán | Article in Book | | 2013 |
| The Confession of Saint Patrick | Grosjean, Paul | Article in Book | | 1958 |
| The context and uses of literacy in early Christian Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1998 |
| The contribution of Irish missionaries and scholars to medieval Christianity | Flanagan, Marie Therese | Article in Book | | 2002 |
| The convention of Druim Ceat (A.U. 575) | Ryan, John | Article in Journal | | 1946 |
| The conversion of the Barbarian peoples | Wood, Ian N. | Article in Book | | 1981 |
| The conversion of the Vikings of Dublin | Sheldon, Gwendolyn | Article in Book | | 2015 |
| The Course of Irish history | | Monograph or Collective Volume | Mercier Press | 1967 |
| The credal statements of St. Patrick as contained in the fourth chapter of his 'Confession' | Oulton, J. E. L. | Monograph or Collective Volume | Hodges Figgis | 1940 |
| The Cross of Cong : a masterpiece of medieval Irish art | Murray, Griffin | Monograph or Collective Volume | Irish Academic Press | 2014 |
| The Crosses of Moone and Castledermot | de Bhaldraithe, Eoin | Article in Journal | | 2009 |
| The cult and lives of Senán of Inis Cathaigh | O'Halloran, Gerard Michael | Thesis | | 1981 |
| The cult of Patricius in Europe | Ní Mheara, R. | Article in Journal | | 1995 |
| The cult of St David in Ireland before 1700 | Cunningham, BernadetteGillespie, Raymond | Article in Book | | 1999 |
| The cult of St. Ciaran in Cornwall and beyond | Brennan, James | Article in Journal | | 1997 |
| The curse of St Laurence O'Toole | Harrington, Jesse | Article in Journal | | 2018 |
| The date of Saint Ninian's Mission : a reappraisal | MacQuarrie, Alan | Article in Journal | | 1987 |
| The date of St Patrick | Hanson, R. P. C. | Article in Journal | | 1978 |
| The deanery of Kilmallock in medieval times | Fitzmaurice, William | Article in Journal | | 2009 |
| The death of St Malachy | Bernard of Clairvaux, Saint | Article in Book | | 2013 |
| The decline of early Irish monasticism | Knox, R.B., Rev. | Thesis | | 1944 |
| The decline of the monastery and the emergence of the national monument | Tubridy, Mary | Article in Book | | 1987 |
| The Derrynaflan hoard and early Irish art | Ryan, Michael | Article in Journal | | 1997 |
| The Derrynaflan ladle : some parallels illustrated | Harbison, Peter | Article in Journal | | 1985 |
| The diocese of Meath in the fifteenth century | French, Noel E. | Article in Journal | | 2012 |
| The dual of siun and delict - penance to God, penalty to men - a legal perspective | Bemmer, Jaqueline | Article in Journal | | 2018 |
| The earliest Christian art in Ireland and Britain | Thomas, Charles | Article in Book | | 1987 |
| The earliest Echternach liturgical manuscript fragments : Irish or Anglo-Saxon? | Ó Cróinín, Dáibhí | Article in Book | | 2017 |
| The earliest life of St Colmcille | Kenney, James F. | Article in Journal | | 1930 |
| The earliest monastic settlement, the church in Cloncurry | Holton, Karina | Article in Book | | 1999 |
| The earliest plans of Clonmacnoise | Manning, Conleth | Article in Journal | | 1994 |
| The early Christian cross-slabs, pillar stones and related monuments of County Galway, Ireland | Higgins, J. G. | Monograph or Collective Volume | B.A.R. | 1987 |
| The early Christian epoch | Mahr, Adolf | Article in Book | | 1941 |
| The early Christian inscribed and carved stones of Tullylease, co. Cork | Henderson, IsabelOkasha, Elisabeth | Article in Journal | | 1992 |
| The early Christian inscribed and carved stones of Tullylease, Co. Cork : addendum | Henderson, IsabelOkasha, Elisabeth | Article in Journal | | 1997 |
| The early Christian Irish : the skeletons at Gallen priory | Howells, W. W. | Article in Journal | | 1941 |
| The early Christians in Britain | Dood, B. E.Heritage, T. C. | Monograph or Collective Volume | Longmans | 1966 |
| The early Christians in Britain | Dodd, B. E.Heritage, T. C. | Monograph or Collective Volume | | 1966 |
| The early church in County Down to the twelfth century | Hamlin, Ann | Article in Book | | 1997 |
| The early church in Offaly | FitzPatrick, Elizabeth | Article in Book | | 1998 |
| The early church in the south-west of Ireland : settlement and organisation | Hurley, Vincent | Article in Book | | 1982 |
| The early church in Tyrone to the twelfth century | Hamlin, Ann | Article in Book | | 2000 |
| The early connexion of the Isle of Man with Ireland | Moore, A.W. | Article in Journal | | 1889 |
| The early connexion of the Isle of Man with Ireland | Moore, A.W. | Article in Journal | | 1889 |
| The early ecclesiastical complexes of Carrowmore and Clonca and their landscape context in Inishowen, county Donegal | Adams, MaxHaycock, DebO'Brien, ColmO'Meara, DonPennie, Jack | Article in Journal | | 2014 |
| The early Irish church : from the coming of Christianity to the end of the Viking era | Hughes, Kathleen | Article in Book | | 1977 |
| The early Irish church and the Holy See | Ryan, J. | Article in Journal | | 1960 |
| The early lives of St Brigit | Ó hAodha, Donncha | Article in Journal | | 1974 |
| The early medieval Church | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| The early medieval church, Templemartin. New archaeological evidence | Herriott, David | Article in Journal | | 2020 |
| The early medieval hand-bells of Ireland and Britain | Bourke, Cormac | Monograph or Collective Volume | National Museum of Ireland, Wordwell Books | 2020 |
| The early monastery of High Island | Scally, Geraldine | Article in Journal | | 1999 |
| The early monastic settlements in Killarney | Rourke, Grellan D. | Article in Book | | 2005 |
| The early period | Ó Fiaich, Tomás | Article in Book | | 1991 |
| The effect of Scandinavian raiders on the English and Irish churches : a preliminary reassessment | Smyth, Alfred P., 1942- | Article in Book | | 1999 |
| The enigma of Saint Patrick | Ó Raifeartaigh, T. | Article in Journal | | 1989 |
| The establishment of authority | Gifney, Noreen | Article in Journal | | 2000 |
| The Eucharistic chrismal in early Christian Ireland | O'Donoghue, Neil Xavier | Article in Book | | 2012 |
| The excavation of a multi-period ecclesiastical site at Aghavea, county Fermanagh | Beglane, FionaHeslip, RobertMacDonald, PhilipMcSparron, CormacSloan, BrianÓ Baoill, Ruairí | Article in Journal | | 2014 |
| The expansion of Irish Christianity to 1200 : an historiographical survey | Ó Briain, Felim | Article in Journal | | 1942 |
| The falling world | Ryan, John | Article in Book | | 1963 |
| The feast of the Assumption in the early Irish church | Hennig, John | Article in Journal | | 1951 |
| The foundation of Christianity in the parish of Kilkeevan (Castlerea) | Wall, Oliver | Article in Journal | | 1994 |
| The globalisation of God : Celtic Christianity's nemesis | Harper, TessMolloy, Dara | Monograph or Collective Volume | Aisling Publications | 2009 |
| The great Irish crosses : meaning and mystery | Crilly, Oliver | Monograph or Collective Volume | Columba | 2013 |
| The heart of the matter : models for Irish high crosses | Kelly, Dorothy | Article in Journal | | 1991 |
| The heritage of Clonmacnoise | Anonymous | Monograph or Collective Volume | Environmental Sciences Unit T.C.D. and County Offaly V.E.C. | 1987 |
| The heritage of early Britain | Charlesworth, M. P.Others | Monograph or Collective Volume | | 1952 |
| The high crosses of Ireland : an iconographical and photographic survey | Harbison, Peter | Monograph or Collective Volume | Habelt for Royal Irish Academy | 1992 |
| The historiography of the Anglo-Saxon conversion : the state of the art | Pickles, Thomas | Article in Book | | 2016 |
| The holy wells of County Wicklow : traditions and legends | Lynch, Geraldine | Article in Book | | 1994 |
| The home of St Patrick | Gogan, L. | Article in Journal | | 1951 |
| The homeplace of St Finbarr | Ó Buachalla, Liam | Article in Journal | | 1963 |
| The humanism of St Columbanus | Bieler, Ludwig | Article in Book | | 1951 |
| The idea of the Celt | Wooding, Jonathan M. | Article in Book | | 2002 |
| The illustrated Columcille | | Monograph or Collective Volume | Macmillan | 1991 |
| The impact of Christianity | Carney, James Patrick, 1914-1989 | Article in Book | | 1954 |
| The influence of D.L. Moody on Irish Presbyterianism | Thompson, Joseph | Article in Book | | 2002 |
| The introduction of alphabetic writing to Ireland : implications and consequences | Richter, Michael, 1943-2011 | Article in Book | Four Courts Press | 1995 |
| The introduction of Christianity into the early Medieval insular world : converting the isles 1 | | Monograph or Collective Volume | Brepols | 2016 |
| The Ireland of Saint Columba | Byrne, Francis John, 1934- | Article in Book | | 1965 |
| The Irish background of St. Fursey | Hennig, John | Article in Journal | | 1952 |
| The Irish Constitution at 75 years: Natural law, Christian values and the ideals of justice | Kavanagh, Aileen | Article in Journal | | 2012 |
| 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 life of Colm Cille | Herbert, Máire | Article in Book | | 1988 |
| The Irish life of Saint Finnian of Clonard : master of the saints of Ireland | Hickey, Elizabeth | Monograph or Collective Volume | Meath Archaeological and Historical Society | 1996 |
| The Irish material in the Stowe Missal revisited | Nooij, Lars B. | Article in Journal | | 2018 |
| The Irish mission of the seventh century : historical fact or historiographical fiction? | Schaferdiek, Knut | Article in Book | | 1984 |
| The Irish saints : short biographies of the principal saints from St. Patrick to St. Laurence O'Toole | Mould, Daphne D. C. Pochin | Monograph or Collective Volume | Burns & Oates | 1964 |
| The Irish, the Virgin Mary and Proclus of Constantinople | Weeda, Peter
| Article in Journal | | 2012 |
| The iron age to early Christian transition : the evidence from dress fasteners | Newman, Conor | Article in Book | | 1995 |
| The island of saints and scholars : the early centuries | Kenny, Evelyn | Article in Journal | | 2000 |
| The Iveragh peninsula | Harbison, Peter | Article in Journal | | 2010 |
| The journey to the grave and the feast of death-lying | Swift, Catherine | Article in Book | | 2016 |
| The Kilnaruane pillar stone, Bantry, County Cork | O'Brien, Mary T. | Article in Book | | 2013 |
| The kingdom of Brega in the seventh century | Cronin, Anthony | Article in Journal | | 2017 |
| The Kings River crossing at Newtown, Kells: a sacred place and power centre chosen by Palladius | Meagher, MIke | Article in Journal | | 2020 |
| The Latin lives of St Laurence of Dublin edited with a critical introduction | Roche, Maurice Francis | Thesis | | 1981 |
| The legacy of St Dymphna | O'Brien, Breege | Article in Journal | | 1999 |
| The life and legend of saint Patrick | Bieler, Ludwig | Article in Journal | | 1952 |
| The life and legend of St Patrick | Bieler, Ludwig | Article in Journal | | 1948 |
| The life and legend of St Patrick : problems of modern scholarship | Bieler, Ludwig | Monograph or Collective Volume | Clonmore & Reynolds | 1949 |
| The life and writings of the historical Saint Patrick | Fischer, PeterHanson, R. P. C. | Monograph or Collective Volume | Seabury Press | 1983 |
| The life of Columcille | Lacey, BrianO'Donnell, Manus, Lord of Tirconnell | Monograph or Collective Volume | Four Courts | 1998 |
| The life of Saint Monenna | ConchubranusUlster Society for Medieval Latin Studies | Article in Journal | | 1982 |
| The life of St Ciarán of Saigir | Sperber, Inger | Article in Book | | 1998 |
| The life of St Gall | Joynt, Maud | Monograph or Collective Volume | Llanerch | 1992 |
| The life of St Patrick : a new approach | Ó Raifeartaigh, T. | Article in Journal | | 1968 |
| The life of St. Ciarán of Saighir | Sqerber, Ingrid | Article in Book | | 1998 |
| The life of St. Patrick and his place in history | Bury, J. B. | Monograph or Collective Volume | Dover | 1998 |
| The life, legends and legacy of Saint Kerrill : a fifth century east Galway evangelist | Mannion, Joseph | Monograph or Collective Volume | The author | 2004 |
| The linguistic argument for two Patricks | Shaw, Francis | Article in Journal | | 1943 |
| The literary tradition of Irish saints in the order of the Canons Regular of the Lateran | Hennig, J. | Article in Journal | | 1946 |
| The literature of medieval Ireland to c. 800 : St. Patrick to the Vikings | Ó Cathasaigh, Tomás | Article in Book | | 2006 |
| The liturgical veneration of Irish saints in medieval Europe | Buckley, Ann | Article in Journal | | 2002 |
| The liturgy and ritual of the Celtic church | Stevenson, JaneWarren, F. E. | Monograph or Collective Volume | [s.n.] | 1988 |
| The lives of Saint Patrick and the Book of Armagh | Bieler, Ludwig | Article in Book | | 1958 |
| The lost literature of medieval England | Wilson, R. M. | Monograph or Collective Volume | Methuen | 1952 |
| The lost magic of Christianity : Celtic essence connections | Poynder, Michael | Monograph or Collective Volume | Cork University Press | 1997 |
| The Luxeuil congress in honour of the fourteenth centenary of St Columban, 1950 | O'Carroll, Jim | Article in Journal | | 1951 |
| The mariology of the early Irish church | Good, James | Article in Journal | | 1963 |
| The marrying of Brigit and Christ in the parish of Templeorum | O'Shea, Mary | Monograph or Collective Volume | The author | 1999 |
| The Martin-Patrick relationship | Gogan, L. | Article in Journal | | 1961 |
| The materiality of devotion in late medieval northern Europe | | Monograph or Collective Volume | Four Courts | 2016 |
| The meaning of 'all the saints' | Hennig, John | Article in Journal | | 1948 |
| The medieval churches and Old Leighlin cathedral in County Carlow | O'Neill, Michael | Article in Book | | 2008 |
| The medieval foundations of western jurisprudence | Staunton, Michael | Article in Book | | 2004 |
| The medieval Irish Church and early Norse Christianity | Martin, Thomas | Thesis | | 2008 |
| The Medieval Missionary : A study of the Conversion of Northern Europe A.D. 500-1300 | Addison, J. T. | Monograph or Collective Volume | | 1936 |
| The miracle stories in seventh-century Irish saints' lives | Stancliffe, Clare | Article in Book | | 1992 |
| The mission of Palladius | Bieler, Ludwig | Article in Journal | | 1948 |
| The mission of Patricius secundus episcopus Scottorum | Mulchrone, Kathleen | Article in Journal | | 1956 |
| The missionary saint and the saga hero : Viking hagiography | Grønlie, Siân | Article in Book | | 2016 |
| The monastery of Cill Rúan | Mould, Daphne D. C. Pochin | Article in Journal | | 1981 |
| The monastery of St Gall | Born, ErnestHorn, Walter | Article in Journal | [s.n.] | 1989 |
| The monastic institute | Ryan, John | Monograph or Collective Volume | Gill | 1972 |
| The monastic life in early Christian Ireland | Ó Fiaich, Tomás | Article in Journal | | 1969 |
| The monastic paruchia of Colum Cille in pre-Norman Ireland : its history and hagiography | Herbert, M. R. M. | Thesis | | 1985 |
| The monk who might be king | De Blacam, Aodh | Article in Journal | | 1941 |
| The myth of the second Patrick, A.D. 461-1961 | Shaw, Francis | Article in Journal | | 1961 |
| The names of the plains beneath the lakes of Ireland | Carey, John | Article in Book | | 2004 |
| The natural world in early Irish Christianity : an ecological footnote | Low, Mary | Article in Book | | 2002 |
| The North Atlantic monastic thalassocracy : sailing to the desert in early medieval insular spirituality | Dumville, David N. | Article in Book | | 2002 |
| The O'Brenans and the ancient territory of Hy-Duach | Murphy, Nicholas | Article in Journal | | 1879 |
| The Old Irish form of 'Palladius' | Mulchrone, Kathleen | Article in Journal | | 1946 |
| The oldest church in Ireland's 'oldest town' | Ó Donnchadha, Brian | Article in Journal | | 2007 |
| The origins of Irish Christianity | Tolstoy, Nikolai | Article in Journal | | 1961 |
| The origins of Saint Patrick | Jelley, Harry | Article in Journal | | 1995 |
| The other Patrick | MacNeill, Eoin | Article in Journal | | 1943 |
| The Parish of Kilmore | Ó Fiaich, Tomás, d.1990 | Article in Journal | | 2010 |
| The Peakaun site : Duignan's 1944 investigations | Holland, PatrickWaddell, John | Article in Journal | | 1990 |
| The pedigree of Saint Caelainn | Grosjean, Paul | Article in Journal | | 1950 |
| The Pelagian controversy in Britain and Ireland | Bonner, Gerald | Article in Journal | | 2002 |
| The penitential of St Columbanus and its importance in the history of penance | Mitchell, Gerard | Article in Book | | 1951 |
| The persuasive power of a mother's breast : the most desperate act of the Virgin Mary's advocacy | Ryan, Salvador | Article in Journal | | 2003 |
| The picture of Patrick | Little, G. A. | Article in Journal | | 1942 |
| The place of healing in early Irish society | Davies, Wendy, 1942- | Article in Book | | 1989 |
| The place of St. Patrick's captivity | McGoldrick, P. J. | Article in Journal | | 1939 |
| The place of St. Patrick's captivity | O'Doherty, John Francis | Article in Journal | | 1939 |
| The place of the Fathers in early Irish devotional literature | Hennig, John | Article in Journal | | 1955 |
| The plain of blood - a study of Magh Slecht and County Cavan | White, Kevin | Article in Journal | | 2016 |
| The position of Isidorian studies : a critical review of the literature, 1936-75 | Hillgarth, J. N. | Article in Journal | | 1983 |
| The post-Columban church | Cowan, I. B. | Article in Journal | | 1974 |
| The practice of Irish kingship in the Central Middle Ages | Zumbuhl, Mark Joseph | Thesis | | |
| The preface of Gildas, the Book of David and the British Church in the sixth century | Joyce, Stephen J.Mews, Constant J. | Article in Journal | | 2018 |
| The priory and parish of Killeigh | Comerford, M., P.P. | Article in Journal | | 1883 |
| The problem of Patrick | Doherty, Charlie | Article in Journal | | 1995 |
| The problem of St Patrick the missionary | Russell, Josiah Cox | Article in Journal | | 1956 |
| The problem of St. Patrick | Carney, James Patrick, 1914-1989 | Monograph or Collective Volume | Institute for Advanced Studies | 1961 |
| The problem of the two Patricks | Esposito, Mario | Article in Book | | 1958 |
| The progress of Christianity in the Decies, 500-600 A.D. | O'Sullivan, Benedict | Article in Journal | | 1987 |
| The property records : Diplomatic Edition including accents | Ó Maolalaigh, Roibeard | Article in Book | | 2008 |
| The property records : text and translation | Broun, DauvitClancy, ThomasForsyth, Katherine | Article in Book | | 2008 |
| The Prosperous crozier and its inscription | Murray, GriffinÓ Riain, Pádraig | Article in Journal | | 2017 |
| The Prosperous, Co. Kildare, Crozier: archaeology and use. | Bourke, CormacHook, Duncan | Article in Journal | | 2017 |
| The quest for Celtic Christianity | Meek, Donald E. | Monograph or Collective Volume | Handsel Press | 2000 |
| The quest of the three abbots : pioneers of Ireland's golden age | Lehane, Brendan | Monograph or Collective Volume | John Murray | 1968 |
| The question of papar in Iceland | Sveinbjarnardóttir, Guðrún | Article in Book | | 2002 |
| The Rathdown slabs - Vikings and Christianity | Corlett, Christiaan | Article in Journal | | 2003 |
| The reading 'nec a me orietur' in paragraph 32 of Saint Patrick's Confession | Ó Raifeartaigh, T. | Article in Journal | | 1965 |
| The real Saint Patrick | Holmes, John | Monograph or Collective Volume | Ambassador | 1997 |
| The reception by the Anglo-Saxons of Mediterranean art following their conversion from Ireland and Rome | Bruce-Mitford, Rupert Leo Scott | Article in Book | | 1967 |
| The reformation of the Irish Church in the twelfth century | Flannagan, Marie Therese | Article in Book | | 2006 |
| The relics of the apostles and early martyrs in the mission of St Patrick | Sheehy, Maurice P. | Article in Journal | | 1961 |
| The Ridge of the Raven. The coming of the Laighin. Chapter 5|The Ridge of the Raven. Drona's revenge. Chapter 5|The Ridge of the Raven. The Sacrifice. Chapter 6|The Ridge of the Raven. Chapter 7 Light in the Darkness | O'Neill, Liam | Article in Journal | | 2020 |
| The Rise of Western Christendom | Brown, Peter | Article in Book | | 2008 |
| The rise of western Christiandom : triumph and diversity, A.D. 200-1000 | Brown, Peter | Monograph or Collective Volume | Blackwell Publishers | 2003 |
| The rite of church dedication in early medieval Ireland and the dedication scheme in the Angers manuscript 477 | Barbet-Massin, Dominique | Article in Journal | | 2016 |
| The rites of Brigid : goddess and saint | Ó Duinn, Sean | Monograph or Collective Volume | Columba | 2005 |
| The road to A.D. 2000 | Knox, R. Buick | Article in Book | | 2002 |
| The saint of Iona | Dempsey, Anthony | Article in Journal | | 1939 |
| The saints in narratives of conversion from the Brittonic-speaking regions | Lewis, Barry | Article in Book | | 2016 |
| The saints of Ireland : the life-stories of SS Brigid and Columcille | De Blacam, Aodh | Monograph or Collective Volume | Bruce Publishing Co. | 1942 |
| The saints of Scotland | Towill, E. S. | Monograph or Collective Volume | | 1978 |
| The Scotticisation of Gaelic : a reassessment of the language and orthography of the Gaelic notes in the Book of Deer | Ó Maolalaigh, Roibeard | Article in Book | | 2008 |
| The seven bishops | Henry, Françoise, 1902-1982 | Article in Journal | | 1946 |
| The sick and the dying in the Book of Deer | Márkus, Gilbert | Article in Book | | 2008 |
| The Skellig story : ancient monastic outpost | Lavelle, Des | Monograph or Collective Volume | O'Brien Press | 1993 |
| The social background to Irish peregrinatio | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1976 |
| The spirituality of the Céili Dé | Ó Fiannachta, Pádraig | Article in Book | | 1981 |
| The status of Munster churches | Flahive, Joseph J. | Article in Book | | 2015 |
| The status of the pre-Patrician Irish annals | Mc Carthy, Daniel P., 1945- | Article in Journal | | 1998 |
| The steadfast man : a life of St. Patrick | Gallico, Paul | Monograph or Collective Volume | Michael Joseph | 1958 |
| The stones of Deer | Forsyth, Katherine | Article in Book | | 2008 |
| The story and cult of Saint Effiam : an old Irish saint in French Brittany | Pauly, Marie-Hélène | Article in Journal | | 1939 |
| The story of Saint Carthage, otherwise Saint Mochuda, 7th century | Carthage, Fr.Ryan, John | Monograph or Collective Volume | Browne and Nolan | 1937 |
| The Stowe enigma: decoding the mystery | Coffey, Brendan | Article in Journal | | 2010 |
| The strange death of Guaire mac Áedáin | Picard, Jean-Michel | Article in Book | | 1989 |
| The sun's night journey : a pharaonic image in medieval Ireland | Carey, John | Article in Journal | | 1994 |
| The syntax of the place-names | Cox, Richard A. V. | Article in Book | | 2008 |
| The theme of weakness in some Early Irish and Hebrew Bible texts | Layzer, Varese | Thesis | | |
| The toponymic landscape of the Gaelic notes in the Book of Deer | Taylor, Simon | Article in Book | | 2008 |
| The traditional view | Ryan, John | Article in Book | | 1958 |
| The two Patricks | Ryan, JohnUa Riain, Eóin | Article in Journal | | 1942 |
| The two Patricks | Murphy, Gerard | Article in Journal | | 1943 |
| The two Patricks : a lecture on the history of Christianity in 5th century Ireland | O'Rahilly, T. F. | Monograph or Collective Volume | Institute for Advanced Studies | 1942 |
| The uses of the Confession of St Patrick by later hagiographers | Africa, Dorothy C. | Monograph or Collective Volume | Northeastern University Press | 1987 |
| The Verona homily collection and its Irish connections | Martin, Lawrence T. | Article in Book | | 1998 |
| The voice of the Irish : the story of Christian Ireland | Staunton, Michael | Monograph or Collective Volume | Paulist | 2003 |
| The voyage of Saint Brendan : representative versions of the legend in English translation | | Monograph or Collective Volume | University of Exeter Press | 2002 |
| The voyage of St Brendan : journey to the promised land | | Monograph or Collective Volume | Dolmen Press | 1978 |
| The wandering saints | Duckett, Eleanor Shipley, 1880-1976 | Monograph or Collective Volume | Collins | 1959 |
| The works of St. Patrick | Bieler, LudwigPatrick, Saint | Monograph or Collective Volume | Longmans Green|Newman Press | 1953 |
| The world of Adomnán | Herbert, Máire | Article in Book | | 2001 |
| Ther earth moved at Killashee | McCabe, Brian | Article in Journal | | 2013 |
| Thoughts on the early Christian church | Ó Conchúir, Doncha | Article in Journal | | 1993 |
| Three Patrician bishops and their seats in Airteach | Connellan, M. J. | Article in Journal | | 1951 |
| Tírechán and the 'magi' | Carey, John | Article in Journal | | 2022 |
| To choose one Easter from three: Oswiu's decision and the Northumbrian Synod of AD 664 | Dailey, E.T. | Article in Journal | | 2015 |
| Tóchar : walking along Ireland's ancient pilgrim paths | MacDonald, Darach | Monograph or Collective Volume | New Island | 2013 |
| Tomás Ó Fiaich as scholar, teacher, mentor and friend | Ó Muraile, Nollaig | Article in Journal | | 2017 |
| Topographical characteristics of the 'Vita Prima' and 'Vita Cogitosi Sanctae Brigitae' | Mc Carthy, Daniel P., 1945- | Article in Journal | | 2001 |
| Traces de la tradition paienne dans la première Irlande chrétienne | Maignant, Catherine | Article in Journal | | 2002 |
| Treasures of County Offaly | Kelly, Eamonn P. | Article in Journal | | 2009 |
| Treasures of Irish Christianity, volume I, people and places, images and texts | | Monograph or Collective Volume | Veritas | 2013 |
| Treasures of Irish Christianity, volume II: a people of the word | | Monograph or Collective Volume | Veritas | 2013 |
| Treasures of Irish Christianity, volume III : to the ends of the earth | | Monograph or Collective Volume | Veritas | 2015 |
| Tullamore and surrounding parishes in Dictionary of Irish Saints | Ó Riain, Pádraig | Article in Journal | | 2013 |
| Two and fifty Irish saints | Carty, FrancisRyan, John | Monograph or Collective Volume | Duffy | 1941 |
| Two early Christiabn monuments at Aughagower, co. Mayo | Higgins, Jim | Article in Journal | | 2018 |
| Two island hermitages in the Atlantic : Rathlin O'Birne, Donegal, and Caher Island, Mayo | Herity, Michael | Article in Journal | | 1995 |
| Two lives of Saint Patrick : "Vita Secunda" and "Vita Quarta" | Byrne, Francis John, 1934-Francis, Pádraig | Article in Journal | | 1994 |
| Two lives of St Patrick : 'Vita Secunda' and 'Vita Quarta' | Byrne, Francis John, 1934- | Article in Journal | | 1994 |
| Two saints | Silke, John J. | Monograph or Collective Volume | [s.n.] | 1998 |
| Ulster place-names in the continental tradition of St Patrick and other Irish saints | Hennig, John | Article in Journal | | 1962 |
| Un disciple de Colomban : Ursanne | Chappatte, Marcel | Article in Book | | 1951 |
| Un pionnier de la civilisation occidentale : Saint Colomban | Dubois, Marguerite-Marie | Monograph or Collective Volume | Éditions Alsatia | 1950 |
| Un recueil d'hagiographie Colombanienne | Leclercq, Jean | Article in Journal | | 1955 |
| Undersrtanding the figurative style and decorative programme of the Book of Deer | Henderson, Isabel | Article in Book | | 2008 |
| Valley of Thrushes | Dunne, Sylvia | Article in Journal | | 2018 |
| Venantius Fortunatus, Ireland, Jerome : the evidence of Precamur patrem | Stancliffe, Clare | Article in Journal | | 1996 |
| Versus Sancti Columbani : a problem re-stated | Bieler, Ludwig | Article in Journal | | 1951 |
| Viking pirates and Christian princes : dynasty, religion, and empire in the North Atlantic | Hudson, Benjamin T. | Monograph or Collective Volume | Oxford University Press | 2005 |
| Vindiciae Patricianae : remarks on the present state of Patrician studies | Bieler, Ludwig | Article in Journal | | 1953 |
| Vita I Sanctae Brigitae | Howlett, David | Article in Journal | | 1997 |
| Voyages of the Celtic saints | Panes, Graham | Monograph or Collective Volume | Gawsg Carreg Gwalch | 2007 |
| Wandering hands : Usserianus Primus and the movements of scripts | Stansbury, Mark | Article in Book | | 2017 |
| Was Palladius surnamed Patricius? | Bieler, Ludwig | Article in Journal | | 1943 |
| Was Saint Wendel from Delvin? | Ó hAnnracháin, Eoghan | Article in Journal | | 2008 |
| Was St Cuthbert a Kells man? | McGreevy, C. | Article in Journal | | 1964 |
| Welche Ortschaften Deutschlands wählte Bonifatius für sein Gründungen? | Vonderau, J. | Article in Journal | | 1951 |
| What comes 'from above' must be born 'from below' : the evidence from Ballyferriter parish, County Kerry | Leahy, Brendan | Article in Book | | 2013 |
| What is a mission? | Wood, Ian N. | Article in Book | | 2016 |
| What the pilgrim saw | Bourke, Cormac | Article in Journal | | 2000 |
| When monks lived on the Saltees | Murphy, Hilary | Article in Journal | | 2012 |
| Where was St Colmcille born at Gartan? | Ó Gallachair, Pádraig | Article in Journal | | 1963 |
| Who was 'old Patrick'? | Morris, Henry | Article in Journal | | 1938 |
| Who was St Patrick? | Thompson, E. A. | Monograph or Collective Volume | Boydell Press | 1985 |
| Wicklow and District in antiquity and folklore | O'Reilly, Stan J. | Article in Journal | | 2023 |
| Wicklow through the Millennia | Cantwell, Ian | Article in Journal | | 2003 |
| With Irish saints along the Alps | Hennig, John | Article in Journal | | 1955 |
| Witness from St Patrick to the creed of 381 | Hanson, R. P. C. | Article in Journal | | 1983 |
| Women in a Celtic church : Ireland 450-1150 | Harrington, Christina | Monograph or Collective Volume | Oxford University Press | 2002 |
| Women of the church in early medieval Ireland c. AD 450 - 1150 | Harrington, Christina | Thesis | | |
| Word and image in the Book of Kells | Pulliam, Heather | Monograph or Collective Volume | Four Courts | 2006 |
| Words of power | Stifter, David | Article in Book | | 2013 |
| Zu den Anfängen der hagiographischen Kritik | Müller, Iso | Article in Journal | | 1950 |
| Zur Deutung des Namens Kilian | Markert, Emil | Article in Book | | 1952 |