| Duffy, P. J. see Duffy, Patrick J. | Cross-reference | | |
| "As white as ours" : Africa, Ireland, imperial panic, and the effects of British race discourse | Duffy, Enda | Article in Book | Berghahn Books | 2007 |
| "Dwelling houses in the old Irish barbarous manner" : archaeological evidence for Gaelic architecture in an Ulster plantation village | Horning, Audrey J. | Article in Book | Four Courts Press | 2001 |
| "People v. Philips" in light of contemporary developments in Ireland and the U.S. | McMahon, Bryan | Article in Journal | | 2014 |
| "Treasures open to the wise" : a survey of early mechanics' institutes and similar organisations | Duffy, Seamus | Article in Journal | | 1990 |
| "Treasures open to the wise" : the Mechanics Institutes of North-East Ulster | Duffy, Seamus | Article in Book | Tyndall | 2000 |
| "Wish you were here ... " : early souvenir stationery | Armstrong-Duffy, Shirley | Article in Book | Irish Academic Press | 1987 |
| '98 recalled in Clooney graveyard | O'Rourke, Michael | Article in Journal | | 1998 |
| 'A big happy family for one and all'? The Duffys and the challenging world of the circus in Nineteenth and Twentieth century Britain and Ireland | McMinn, Richard | Article in Journal | | 2012 |
| 'A work for other hands' : Patrick Pearse and St Ita's College | Limond, David | Article in Journal | | 2006 |
| 'Breaching disciplinary boundaries' : reflections on a half-century of the GSIHS | Duffy, Patrick J. | Article in Journal | | 2019 |
| 'But what about the earlier city?' John Rocque's Exact Survey (1756) as a source for medieval Dublin | Montague, John | Article in Book | Four Courts Press | 2013 |
| 'Excavating, mapping and interrogating ancestral terrains': William J. Smyth and Ireland's geography | Nolan, William | Article in Book | | 2012 |
| 'From skill to skill' : evidence for medieval brewing at Balbriggan, Co Dublin | Cobain, SarahDuffy, PaulKavanagh, Helen | Article in Journal | | 2013 |
| 'Hys worthy seruice done in the vpror' : Sir John Whyte and the defence of Dublin during Silken Thomas' rebellion, 1534 | Jones, Randolph | Article in Book | | 2011 |
| 'Irish pilgrimage' : a romantic misconception | Hayes-Healy, Stephanie | Article in Book | | 2013 |
| 'Making the documents of conquest speak' : Plantation society in Armagh and the 1641 Depositions | Margey, Annaleigh | Article in Book | | 2012 |
| 'Nearly all that geography can require': the state and the construction of a geographical archive in nineteenth-century Ireland | Duffy, Patrick J. | Article in Book | | 2012 |
| 'Once I heard a story .. from scripture does it come' : biblical allusions in Irish bardic religious poetry | Ryan, Salvador | Article in Book | | 2013 |
| 'Palmers' as ex-Crusaders in Irish urban environments? The evidence of the Dublin Guild Merchant Roll | Swift, Catherine | Article in Book | | 2022 |
| 'Shovelling out the poor' : assisted emigration from Ireland from the great famine to the fall of Parnell | Moran, Gerard | Article in Book | | 2004 |
| 'The laws and usages of Dublin': a complete translation of Les leys et les usages de la cite de Diveline | De Pontfarcy, YolandeGaffney, Phyllis | Article in Book | | 2019 |
| 'The Mortimer has taken great pains to save and keep the peace': crown, city and community during the Bruce invasion and its aftermath | Dryburgh, Paul | Article in Book | | 2019 |
| 'The western world's tower of honour and dignity' : the career of Muirchertach Ua Briain in context | Duffy, Seán | Article in Book | | 2006 |
| 'Through American eyes' : 100 years of Ireland in National Geographic magazine | Duffy, Patrick J. | Article in Book | | 2013 |
| 'To dwell in the Court of Kings' - the Catholic Irish [in Austria] | Duffy, Christopher | Article in Journal | | 2023 |
| 'Ung sage et valent home': Hugh de Lacy and the Albigensian Crusade | Duffy, Paul | Article in Journal | | 2011 |
| 'What shall we hang - the holly, or each other' : Henry II's Christmas court (Dublin, 1171) | Casey, Denis | Article in Book | | 2025 |
| 1169 and all that | Duffy, Seán | Article in Journal | | 2019 |
| 19th century images of Hartford's Irish-Catholic community (1827-1861) | Duffy, Joseph | Article in Journal | | 1986 |
| 50 years behind the counter | Duffy, Kevin | Monograph or Collective Volume | The author | 2001 |
| 850 years of oppression? An introduction to this speciaL issue marking the 850th anniversary of the Anglo-Norman ('recte' English?) invasion of Irerland | Duffy, Seán | Article in Journal | | 2019 |
| A calendar of the Statute Roll for 21 years now in force | Duffy, George Gavan | Monograph or Collective Volume | Three Candles | 1944 |
| A century of elections in Monaghan | Kavanagh, Adrian | Article in Book | | 2017 |
| A cosmological poem attributed to Moses | Carey, John | Article in Book | | 2013 |
| A cut above : cranial surgery in medieval Dublin | Ó Donnabháin, Barra | Article in Book | | 2001 |
| A dead man at Ballyshannon | Woolf, Alex, 1963- | Article in Book | Four Courts Press | 2007 |
| A deserted medieval village at Ballysheehan, Co. Tipperary | Duffy, SeánO'Donovan, Edmond | Article in Journal | | 2002 |
| A Donegal childhood | Duffy, T. P. | Monograph or Collective Volume | Justin Nelson | 2002 |
| A Dublin ‘crusader’ | Purcell, Emer | Article in Book | | 2022 |
| A Farney emigrant’s story : Christopher Byrne’s American letter | Harris, Ruth-Ann | Article in Book | | 2017 |
| A fourteenth-century historical compilation from St Mary's Cistercian abbey, Dublin | Meehan, Bernard | Article in Book | | 2016 |
| A guide to tracing your Donegal ancestors | Duffy, GodfreyMeehan, Helen | Monograph or Collective Volume | Flyleaf Press | 2014 |
| A guide to tracing your Donegal ancestors | Duffy, GodfreyMeehan, Helen, | Monograph or Collective Volume | Flyleaf Press | 2008 |
| A lease from the estate of the Earl of Essex 1624 | Duffy, Patrick J. | Article in Journal | | 1990 |
| A medieval bronze pax from Dunbrody Abbey, Co. Wexford, and the fate of ornamenta from suppressed religious houses in Ireland | Ó Floinn, Raghnall | Article in Book | | 2013 |
| A medieval stone building and other deposits at 27 High Street, Trim | Duffy, Carmel,
| Article in Book | | 2009 |
| A misattributed quotation? Sir William Napier, Faugh-a-Ballagh, and the 88th Connaught Rangers | Donnelly, Sean | Article in Journal | | 2014 |
| A much disputed : Carrickmines and the Dublin marches | O'Byrne, Emmett | Article in Book | | 2003 |
| A note on historical sources of genealogical value in Co. Meath | Duffy, Carmel | Article in Journal | | 1986 |
| A numismatic 'Pot-Pourri' from Galway | Duffy, Paul | Article in Journal | | 2006 |
| A patron for passers-by : Benedict Joseph Labre | | Article in Book | | 1998 |
| A poteen raid | Tummon, Francis | Article in Book | | 2016 |
| A register of lost deeds relating to the earldom of Ulster, c.1230-1376 | Frame, Robin | Article in Book | | 2013 |
| A rising tide doesn't lift all boats : archaeological excavations at Meeting House Square, Temple Bar, Dublin | Hayden, Alan R. | Article in Book | | 2015 |
| A socio-economic analysis of Dublin's Jewish community, 1880-1911 | Duffy, Mark Joseph Jude | Thesis | | 1985 |
| A soul stone : the origins and development of Monaghan County Museum | Walsh, Aidan | Article in Book | | 2017 |
| A stone shrine for a relic of St Thomas Becket in Dublin? | Duffy, PaulO'Keeffe, Tadhg | Article in Journal | | 2017 |
| A window into Clogher Church of Ireland diocese : the visitations of 1622 and 1733 | Roulston, WilliamScott, Brendan | Article in Book | | 2017 |
| A writer's Wicklow | Mansfield, Jagoda de Valera | Article in Journal | | 2001 |
| Across the barriers, 1930-2001 | | Monograph or Collective Volume | Mayo Branch APVSC | 2001 |
| After Brian Bóraime: the high-kingship and the kings of Connacht | Flanagan, Maire Therese | Article in Book | | 2017 |
| Against insurrection : Eimar O'Duffy and the memory of the 1916 rising | Flanagan, Frank | Article in Book | | 2010 |
| Agricultural change and the growth of the creamery system in Monaghan, 1855-1920 | Breathnach, Proinnsias | Article in Book | | 2017 |
| Ailbe Ua Maél Muaid, Uí Chennselaig and the Vitae Sanctorum Hiberniae | Mac Shamhráin, Ailbhe | Article in Book | | 2013 |
| Amlaíb Cuarán and the Gael, 941-81 | Woolf, Alex, 1963- | Article in Book | | 2002 |
| An analysis of the environmental history of medieval county Dublin based on archbishop Alen's register c.1172-1534 | Bolger, Teresa | Article in Book | NA | 2008 |
| An appreciation of Paddy Healy | Gooodbody, Rob | Article in Book | | 2001 |
| An architectural history of Gaelic castles and settlements, 1370-1600 | Loeber, Rolf | Article in Book | | 2001 |
| An bhean tréitheach | Luccan, Nóra | Article in Book | | 1993 |
| An early medieval roadway at Chancery Lane : from Duibhlinn to Áth Cliath? | Walsh, Claire | Article in Book | | 2009 |
| An English city? Gaelicization and cultural exchange in late medieval Dublin | Booker, Sparky | Article in Book | | 2010 |
| An extract from Strafford's inquisition : Galway corporation property, in 1637 | | Article in Journal | | 1997 |
| An Ghaeilge i Muineachán lem’ linne | Ó Baoighill, Pádraig | Article in Book | | 2017 |
| An introduction to the engineering heritage of Tuam | Duffy, Paul | Article in Book | | 2014 |
| An Irish missionary in India : Thomas Gavan Duffy and 'The Catechist of Kil-Arni' | Bateman, Fiona | Article in Book | | 2006 |
| Anglicization in medieval Ireland : was there a Gaelic Irish 'middle nation'? | Veach, Freya Verstraten | Article in Book | | 2013 |
| Anglo-Norman elite, pilgrims and the Hiberno-Norse in the medieval cemetery of St Thomas the Martyr, Dublin: osteoarchaeological evidence | Tobin, Maeve | Article in Book | | 2023 |
| Antiquarianism and the Gaelic revival in county Louth in the pre-famine era | Duffy, Seán | Article in Journal | | 1988 |
| Appreciation | Mac Gréil, Micheál | Article in Journal | | 2004 |
| Appreciation of Leo Swan | Wallace, Patrick | Article in Book | | 2002 |
| Appreciation of Philomena Connolly | Simms, Katharine | Article in Book | | 2003 |
| Archaeological excavation of the Anglo-Norman waterfront at Strand Street Great, Dublin | Walsh, Claire | Article in Book | | 2005 |
| Archaeological excavation of the medieval church of St John of Bothe Street, Fishamble Street, Dublin 8 | Simpson, Linzi | Article in Book | | 2019 |
| Archaeological excavations at 16-17 Cook Street, Dublin | Meenan, Rosanne | Article in Book | | 2002 |
| Archaeological excavations at the abbey of St Thomas the Martyr, Dublin | Walsh, Claire | Article in Book | | 2000 |
| Archaeological excavations at the mill-pond of St. Thomas's abbey, Dublin | Myles, Franc | Article in Book | | 2009 |
| Archaeological excavations at the west side of Augustine Street, Dublin : a summary | Hayden, Alan R. | Article in Book | | 2010 |
| Archaeological excavations at Usher's Quay, 1991 | Swan, D. L. | Article in Book | | 2000 |
| Archaeological excavations on Mount Gamble Hill : evidence for a new early medieval church in Swords? | O'Donovan, Edmond | Article in Book | | 2016 |
| Archaeological excavations on the site of Meakstown Castle, Finglas, Co. Dublin | McQuade, Melanie | Article in Book | | 2009 |
| Archaeological monuments in County Monaghan | McDermott, Siobhán | Article in Book | | 2017 |
| Architecture for archaeology and urban context: the Ship Street - Werburgh Street Framework Plan | McCullough, Niall | Article in Book | | 2013 |
| Ardnacrusha - birthplace of the E.S.B. | Duffy, Paul | Article in Journal | | 1987 |
| Aristocratic women in Ireland, 1450-1660 : the Ormond family, power and politics | Duffy, Damien | Monograph or Collective Volume | Boydell Press | 2021 |
| Arklow - an historical reference | O'Duffy, Larissa | Article in Journal | | 2000 |
| Armagh and Kells | Duffy, Patrick J. | Article in Book | | 2013 |
| Art Murphy and Gaelic literary activity in the Dundalk area in the 1820s | Duffy, Seán | Article in Journal | | 1987 |
| Aspects of famine and the Farney landscape | Duffy, Patrick J. | Article in Journal | | 1996 |
| Assembly and inauguration places of the Burkes in late medieval Connacht | FitzPatrick, Elizabeth | Article in Book | | 2001 |
| Assessing non-climatic influences on the record of extreme weather events in the Irish Annals | Ludlow, Francis | Article in Book | | 2012 |
| Assisted emigration from the Shirley estate, 1843-54 | Duffy, Patrick J. | Article in Journal | | 1992 |
| At the anvil: essays in honour of William J. Smyth | | Monograph or Collective Volume | | 2012 |
| Atlas of Irish history | Duffy, Seán | Monograph or Collective Volume | Gill & Macmillan | 2000 |
| Atlas of Irish history | | Monograph or Collective Volume | Gill & Macmillan | 1997 |
| AVE reversing EVA : miscellanea on Marian devotion in Irish bardic poetry | McManus, Damian | Article in Book | | 2013 |
| Balgriffin cross | Duffy, Paul | Article in Journal | | 2018 |
| Bánú Phartraí agus Thuar Mhic Eadraigh | Ó Laighin, Pádraig G. | Monograph or Collective Volume | Coiscéim | 1997 |
| Bardic poetry and the MacMahons of Oirghialla | Mac Cathmhaoil, Nioclás | Article in Book | | 2017 |
| Bataille de Baziege de 1219: donnees nouvelles sur le cadre de la bataille | Aries, Lucien | Article in Book | | 2017 |
| Becoming tropical: Africa in the Irish geographical imagination | Linehan, Denis | Article in Book | | 2012 |
| Before and after St John’s hospital: evidence for a pre-Anglo-Norman cemetery on Thomas Street found on the shelves of Trinity College Dublin | Gapert, RenéHarbison, Joseph | Article in Book | | 2023 |
| Beyond Clontarf : links between Dublin and the earldom of Orkney | Ellis, Caitlin | Article in Book | | 2025 |
| Beyond the sectarian divide : the social bases and political consequences of nationalist and unionist party competition in Northern Ireland | Duffy, MaryEvans, Geoffrey | Article in Journal | | 1997 |
| Beyond Valhalla : the conservation of a group of Viking grave-goods from Dublin | Daly, Cathy | Article in Book | | 2005 |
| Black Ireland's Race : Thomas Carlyle and the Young Ireland Movement | Dugger, Julie M. | Article in Journal | | 2006 |
| Black Monday : the power of myth in medieval Dublin | Johnston, Declan | Article in Book | | 2013 |
| Blackpitts: Dublin’s medieval tanning quarter | Giacometti,Antoine | Article in Book | | 2020 |
| Blueshirts, sports and socials | Cronin, Mike | Article in Journal | | 1994 |
| Brian and the Uí Néill kingship of Tara | O’Flynn, Eoin | Article in Book | | 2017 |
| Brian Bóraime, the Insular Viking world, and the battle of Clontarf | Wadden, Patrick | Article in Book | | 2017 |
| Brian Bóraime’s right to rule: an unfinished dialogue | Fischer, Lenore | Article in Book | | 2017 |
| Brian Boru : imperator scotorum | Duffy, Séan | Article in Journal | | 2014 |
| Brian Boru and the Battle of Clontarf | Duffy, Seán | Monograph or Collective Volume | Gill & Macmillan | 2013 |
| Brian Boru, the Book of Armagh and the Irish church in the tenth and eleventh centuries | Casey, Denis | Article in Book | | 2017 |
| Bride Street revisited - Viking burial in Dublin and beyond | Harrison, Stephen H. | Article in Book | | 2010 |
| British and Irish conflict regulation from Sunningdale to Belfast, part I : Tracing the status of contesting sovereigns, 1968–1974 | O'Duffy, Brendan | Article in Journal | | 1999 |
| British and Irish conflict regulation from Sunningdale to Belfast, part II : Playing for a draw, 1985-1999 | O'Duffy, Brendan | Article in Journal | | 2000 |
| British-Irish relations and Northern Ireland : from violent politics to conflict regulation | O'Duffy, Brendan | Monograph or Collective Volume | Irish Academic Press | 2007 |
| Building bridges? The political implications of electoral integration for Northern Ireland | Duffy, MaryEvans, Geoffrey | Article in Journal | | 1996 |
| Cambridge History of Ireland, vol 1: 600-1550; [edited by] Brendan Smith. Cambridge, 2018. Reviewed by Seán Duffy | Duffy, Seán | Article in Journal | | 2018 |
| Carleton, Kavanagh, and the south Ulster landscape, c.1800-1950 | Duffy, Patrick J. | Article in Journal | | 1985 |
| Carlingford Castle in the Middle Ages | Duffy, Seán | Article in Journal | | 2023 |
| Carrickfergus and the revolution in castle design c.1200 | Tietszch-Tyler, Daniel | Article in Book | | 2017 |
| Carrickmacross | Duffy, Patrick J. | Article in Book | | 1995 |
| Catholic periodicals of the past, 5 : Duffy's Irish Catholic Magazine, 1847-1848 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 6 : Duffy's Irish Catholic Magazine, 1847-48, part 2 | Wall, Thomas | Article in Journal | | 1964 |
| Charles Gavan Duffy | MacNamara, Brinsley | Article in Book | | 1945 |
| Charles Gavan Duffy and the Repeal movement | Nowlan, Kevin B. | Monograph or Collective Volume | National University of Ireland | 1963 |
| Charles Gavan Duffy in Australia | Parnaby, J. E. | Article in Book | | 1983 |
| Charles Gavan Duffy, 1816-1903 : rebel and statesman | O'Brien, Gerard | Article in Book | | 1992 |
| Charles Gavan Duffy, patriot and statesman : the story of Charles Gavan Duffy (1816-1903) | Ó Broin, León, 1902-1990 | Monograph or Collective Volume | J. Duffy | 1967 |
| Charles Gavan Duffy, patriot and statesman : the story of Charles Gavan Duffy (1816-1903) | Ó Briain, Liam | Monograph or Collective Volume | Duffy | 1967 |
| Charles Gavan Duffy, the Great Famine in Ireland, and famine memory in colonial Australia | Geary, Laurence M. | Article in Journal | | 2008 |
| Charles Gavan Duffy, The Nation, Irish Confederation and the Rising of 1848 | Nolan, William | Article in Book | | 2017 |
| Chieftains, betaghs and burghers : the Irish on the royal manors of medieval Dublin | Foley, Áine | Article in Book | | 2011 |
| Child Casualties 1916 | Duffy, Joe | Article in Book | | 2017 |
| Children of the revolution | Duffy, Joe | Article in Journal | | 2013 |
| Children of the Rising : the untold story of the young lives lost during Easter 1916 | Duffy, Joe | Monograph or Collective Volume | Hachette Books | 2015 |
| Children of the Troubles : the untold story of the children killed in the Northern Ireland conflict | Duffy, JoeMcClements, Freya | Monograph or Collective Volume | Hachette Books Ireland | 2019 |
| Children's literature | Whyte, Pádraic | Article in Book | | 2011 |
| Chivalry, Saracens and the chansons de geste of Brian Boru | Swift, Catherine | Article in Book | | 2016 |
| Cholera in County Louth, 1832-39 | Duffy, P. | Article in Journal | | 1983 |
| Christ Church cathedral and its environs : medieval and beyond | O'Neill, Michael | Article in Book | | 2011 |
| Christ Church Cathedral, Dublin : a survey of the nave and south transept roofs | Geaney, Máire | Article in Book | | 2006 |
| Christopher St Lawrence, seventh baron of Howth, and the identity of the Old English | Fischer, Lenore | Article in Book | | 2023 |
| Church lands in medieval Monaghan | Ó Dufaigh, Seosamh | Article in Book | | 2017 |
| Church reform in Connacht | Perros-Walton, Helen | Article in Book | | 2013 |
| Clachans: landscape and life in Ireland before and after the Famine | Whelan, Kevin | Article in Book | | 2012 |
| Clanricarde and the duke of Lorraine | Duffy, E. P. | Article in Journal | | 1965 |
| Clogher record album : a diocesan history | | Monograph or Collective Volume | Cumann Seanchais Chlochair | 1975 |
| Clonmahy parish | Duffy, Godfrey | Article in Journal | | 1993 |
| Clontarf 1014: military significance, external dimension and outcome | Etchingham, Colmán | Article in Book | | 2017 |
| Collaboration without Anglicisation : the MacGiollapadraig lordship and Tudor reform | Edwards, David, 1963- | Article in Book | | 2001 |
| Colonial beginnings : Lord Baltimore's Irish experience | Mannion, John | Article in Book | | 2012 |
| Colonial spaces and sites of resistance : landed estates in 19th century Ireland | Duffy, Patrick J. | Article in Book | | 2005 |
| Comhairle Mhic Clamha ó Achadh na muileann | | Article in Journal | | 1965 |
| Commemorating Macartan | Duffy, Joseph | Article in Journal | | 2009 |
| Conflicting subtleties: Southern Irish Protestant nationalism since 1920 | Butler, David J. | Article in Book | | 2012 |
| Conflicts in tourism and heritage | Duffy, Patrick J. | Article in Journal | | 1993 |
| Conquest as Crusade: Ireland’s invasion and a colonial plea to the papacy | Callan, Maeve | Article in Book | | 2022 |
| Continuity and change in the border landscape | Duffy, Patrick J. | Article in Book | | 2002 |
| County Dublin : some observations on the historiography of early medieval excavation and research, 1930-2005 | Harney, LorcanKinsella, JonathanO'Sullivan, Aidan | Article in Book | | 2011 |
| County Dublin Archaeology GIS: a research resource for medieval Dublin | Johnson, Ruth | Article in Book | | 2019 |
| County Monaghan immigrants in the Consett area of County Durham, England, 1842-1855 | Duffy, Godfrey F. | Article in Journal | | 1997 |
| Crannogs in late medieval Gaelic Ireland, c.1350-c.1650 | O'Sullivan, Aidan | Article in Book | | 2001 |
| Crean Brush vs. Ethan Allen : a winner's tale | Coyle, Eugene A.Duffy, John J. | Article in Journal | | 2002 |
| Croke Park | Duffy, PáraicÓ Tuathaigh, M.A. G. (Gearóid) | Article in Book | | 2015 |
| Crusading Rhetoric and Anglo-Irish Relations, c. 1300–1600 | Hurlock, Kathyrn | Article in Book | | 2022 |
| Cultures in contact in the Leinster and Dublin marches, 1170-1400 | O'Byrne, Emmett | Article in Book | | 2004 |
| Curtailing Kings: Ireland, the Cathar Crusade and the cult of Simon de Montfort | Duffy, Paul | Article in Book | | 2022 |
| Dál Cais after Clontarf | MacCotter, Paul | Article in Book | | 2017 |
| Dán Áráis, 1654 | Ó Cróinín, Dáibhí | Article in Book | | 2013 |
| Death where is thy sting? | Duffy, Jarlath | Article in Journal | | 2004 |
| Decorated wood from Temple Bar West, Dublin | Johnson, Ruth | Article in Book | | 2002 |
| Defining the 'Pill' : the contribution of excavations at Ormond Quay Upper to the interpretation of the original topography of the Liffey foreshore | Bolger, Teresa | Article in Book | | 2011 |
| Definitions of Irishness in the 'Library of Ireland' literary anthologies | MacCarthy, Anne | Monograph or Collective Volume | Peter Lang | 2012 |
| Delusions of Dál Riada : the co-ordinates of Mac Domnaill power, 1461-1550 | Kingston, Simon | Article in Book | | 2001 |
| Denis Maguire OFM, Bishop of Kilmore 1770-98 | Duffy, Francis | Article in Journal | | 1997 |
| Development phases in Hiberno-Norse Dublin : a tale of two cities | Halpin, Andrew | Article in Book | | 2005 |
| Disencumbering our crowded places : theory and practice of estate emigration schemes in mid-nineteenth-century Ireland | Duffy, Patrick J. | Article in Book | | 2004 |
| Displacement and dispossession: the transplantation scheme 1653-1657 | Nugent, Patrick | Article in Book | | 2012 |
| Donegal and the Victoria Cross | Doherty, Richard | Article in Journal | | 2020 |
| Dragons, giants and beautiful women: medieval Dublin in the European imagination | Whelan, Caoimhe | Article in Book | | 2020 |
| DrChristopher Duffy (1936-2022) | Ferguson, Kenneth | Article in Journal | | 2023 |
| Drumcondra modernism : Joyce's suburban aesthetic | Duffy, Enda | Article in Book | | 2020 |
| Dublin 1190–1290: provincial capital or capital city? | Campbell, Bruce M.S. | Article in Book | | 2023 |
| Dublin 1911 | | Monograph or Collective Volume | Prism / Royal Irish Academy | 2011 |
| Dublin : the biological identity of the Hiberno-Norse town | Hallgrímsson, BenediktÓ Donnabháin, Barra | Article in Book | | 2001 |
| Dublin and the Gaelic Irish economy in the eleventh and twelfth centuries | Casey, Denis | Article in Book | | 2020 |
| Dublin and the late Roman comb | Riddler, IanTrzaska-Nartowski, Nicola | Article in Book | | 2015 |
| Dublin and the Scottish threat, 1315-18 | Lydon, James F. | Article in Book | | 2016 |
| Dublin Castle : From Fortress to Palace. Volume 1: Vikings to Victorians. A history of Dublin Castle to 1850. | Duffy, Seán ; Montague, John ; Mulligan, Kevin ; O'Neill, Michael | Monograph or Collective Volume | National Monuments Service | 2022 |
| Dublin Castle in the middle ages | Lydon, James F. | Article in Book | | 2002 |
| Dublin house prices: a history of booms and busts from 1708-1949 | Deeter, KarlDuffy, DavidQuinn, Frank | Article in Journal | | 2017 |
| Dublin in Middle Irish Leinster dynastic poetry | Bhreathnach, Edel | Article in Book | | 2010 |
| Dublin in the late-medieval Gaelic annals | Cunningham, Bernadette | Article in Book | | 2008 |
| Dublin in transition : from Ostman town to English borough | Lydon, James F. | Article in Book | | 2001 |
| Dublin's economic relations with hinterland and periphery in the later Viking age | Valante, Mary A. | Article in Book | | 2000 |
| Dublin's famous 'Bully's Acre' : site of the monastery of Kilmainham? | Simpson, Linzi | Article in Book | | 2009 |
| Dublin's oldest book? a list of saints 'made in Germany' | Ó Riain, Pádraig | Article in Book | | 2004 |
| Dublin's oldest roof? the choir of St Patrick's Cathedral | Lyons, Charles H. | Article in Book | | 2006 |
| Dublin's southern frontier under siege : Kindlestown Castle, Delgany, county Wicklow | Simpson, Linzi | Article in Book | | 2003 |
| Dublin's southern town defences, tenth to fourteenth centuries : the evidence from Ross Road | Walsh, Claire | Article in Book | | 2001 |
| Dubliners view themselves : the Dublin city chronicles | Gillespie, Raymond | Article in Book | | 2008 |
| Dublin’s lost medieval church of St Michael | Dooley, Sheila | Article in Book | | 2019 |
| Duffy's war : Fr. Francis Duffy, Wild Bill Donovan, and the Irish fighting 69th in World War I | Harris, Stephen L. | Monograph or Collective Volume | Potomac | 2006 |
| Éadbhard Ó Dufaigh, 1840-1868 | Ó Laighin, Pádraig G. | Monograph or Collective Volume | Coiscéim | 1994 |
| Early Christian and medieval excavations at Teach Naithí : the changing morphology of a church site in Dundrum, County Dublin | O'Donovan, Edmond | Article in Book | | 2012 |
| Education in Cavan, 1825-32 | Duffy, Francis | Article in Journal | | 1995 |
| Eighteenth-century estate maps | Duffy, Patrick J. | Article in Journal | | 1997 |
| Emerging from the mist : Ireland and Man in the eleventh century | Duffy, Seán | Article in Book | | 2002 |
| Emigrants and the estate office in the mid-nineteenth century : a compassionate relationship? | Duffy, Patrick J. | Article in Book | | 1997 |
| Emigration to Australia from County Monaghan workhouses 1848-50 | McIntyre, Perry | Article in Book | | 2017 |
| Engineering | Duffy, Paul | Article in Book | | 1999 |
| English patron, English building? the importance of St. Sepulchres archiepiscopal palace, Dublin | O'Donovan, Danielle | Article in Book | | 2003 |
| Eoin O'Duffy : a self-made hero | McGarry, Fearghal | Monograph or Collective Volume | Oxford University Press | 2005 |
| Eoin O'Duffy's Blueshirts and the Abyssinian crisis | McMahon, Cian | Article in Journal | | 2002 |
| Ethan Allen's Irish friends | Coyle, Eugene A.Duffy, John J. | Article in Journal | | 1995 |
| Everyday violence in medieval Dublin | Hall, Dianne | Article in Book | | 2016 |
| Excavation of a medieval house in the grounds of Howth House, County Dublin | Hayden, Alan R. | Article in Book | | 2006 |
| Excavation of medieval river frontage at Arran Quay, Dublin | Hayden, Alan R. | Article in Book | | 2004 |
| 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 23-27 Stephen Street Lower, Dublin | Meenan, Rosanne | Article in Book | | 2012 |
| Excavations at 58-59 Thomas Street / Vicar Street and 63-64 Thomas Street, Dublin 8 | Carroll, Judith | Article in Book | | 2012 |
| Excavations at Dublin Castle, 1985-7 | Lynch, AnnManning, Conleth | Article in Book | | 2001 |
| Excavations at Hammond Lane, Dublin : from hurdler-ford to iron-foundry | Cryerhall, Abi | Article in Book | | 2006 |
| Excavations at Longford Street Little, Dublin : an archaeological approach to Dubh Linn | O'Neill, John | Article in Book | | 2004 |
| Excavations at Riverhouse, Chancery Street, Dublin 7 ; a riverside dumping ground in medieval Oxmantown | Ní Cheallacháin, Muireann | Article in Book | | 2025 |
| Excavations at St Mary's abbey, Dublin : the archaeology of Ireland's premier Cistercian house | O'Donovan, Edmond | Article in Book | NA | 2025 |
| Excavations at St Stephen's leper hospital, Dublin : a summary account and an analysis of burials | Buckley, LaureenHayden, Alan R. | Article in Book | | 2002 |
| Excavations at the site of the church and tower of St Michael le Pole, Dublin | Gowen, Margaret | Article in Book | | 2001 |
| Excavations of the medieval cemetery of St. Peter's church, Dublin | Coughlan, Tim | Article in Book | | 2003 |
| Excavations on the southern side of the medieval town at Ship Street Little, Dublin | Simpson, Linzi | Article in Book | | 2004 |
| Excavations within the manor of Merrion Castle, Dublin | Baker, Christine | Article in Book | | 2008 |
| Exploring the history and heritage of Irish landscapes | Duffy, Patrick J. | Monograph or Collective Volume | Four Courts | 2007 |
| Exploring townland geographies : landholding and landscape in County Monaghan from the sixteenth century | Duffy, Patrick J. | Article in Book | | 2017 |
| Family, Ireland, and politics in Edwin O'Connor's "All in the family" | Duffy, Charles E. | Article in Journal | | 2004 |
| Farney in 1634 : an examination of John Raven's survey of the Essex estate | Duffy, Patrick J. | Article in Journal | | 1983 |
| Father Bernard Donnelly - a pioneer in Kansas City | Duffy, V. | Article in Journal | | 1978 |
| Father Francis Patrick Duffy : 'A very Irish, very Catholic, very American person' | Shelley, Thomas J. | Article in Journal | | 2004 |
| Feldmarschall Browne, Irischer emigrant, kaiserlicher Heerführer, Gegenspieler Friedrichs II von Preussen | Duffy, Christopher | Monograph or Collective Volume | Herold | 1966 |
| Fenianism, Home Rule and the land war (1850-91) | Moody, T. W. (Theodore William), 1907-1984 | Article in Book | | 1967 |
| Fernmag alias Farney: kings and lineages c.882-1193 | Moore, Eoghan | Article in Book | | 2017 |
| Fertility control in Ireland and Scotland c.1880-1930 : some new findings | Duffy, NiallÓ Gráda, Cormac | Monograph or Collective Volume | University College Dublin Department of Political Economy | 1989 |
| Fighting the Famine in Ireland | Duffy, P. J. | Article in Journal | | 2015 |
| Fingal lady | Gunning, MaryMortimer, Theo | Article in Journal | | 2001 |
| Five times arraigned for treason | O'Brien, Richard Barry | Article in Journal | | 1903 |
| Flax in August | Duffy, Michael J. | Article in Journal | | 1987 |
| Flint scathers and burnt mounds : results from an archaeological watching brief on Island Magee, county Antrim in 1995 and 1996, Scotland to Northern Ireland gas pipeline | Duffy, PaulOthers | Article in Journal | | 2000 |
| Foreign apologues in bardic poetry | Simms, Katharine | Article in Book | | 2013 |
| Forty years a-digging : a preliminary synthesis of archaeological investigations in medieval Dublin | Simpson, Linzi | Article in Book | | 2000 |
| Fosterage and Gossiprid in late medieval Ireland : some new evidence | Fitzsimons, Fiona | Article in Book | | 2001 |
| Foucault and the colonial subject: emergent forms of colonial governmentality in early modern Ireland | Morrissey, John | Article in Book | | 2012 |
| Four years of Irish history, 1840-1850 | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1883 |
| Fr Patrick Morris, SJ | Duffy, Hugh P., SJ | Article in Book | | 2014 |
| From Burncourt to Jarama | Ó Cathaoir, Brendan | Article in Journal | | 2006 |
| From Carcassonne to Carickfergus : the legacy of de Lacy's crusade experience in Britain and Ireland | Duffy, Paul | Article in Book | | 2017 |
| From Carrickfergus to Carcassonne: Hugh de Lacy and the Albigensian Crusade | Brown, Daniel J. F.Duffy, Paul | Article in Book | | 2017 |
| From Carrickfergus to Carcassonne: the epic deeds of Hugh de Lacy during the Albigensian crusade | | Monograph or Collective Volume | Brepols | 2017 |
| From Dirt and Dips to Dryrobes: Bathing in Dún Laoghaire Through the Ages | O'Duffy, Eileen | Monograph or Collective Volume | Lettertec | 2021 |
| From holy wells to the 'great ocean of truth': symbols of the sacred in nature | Buttimer, Anne | Article in Book | | 2012 |
| From mayor of Dublin to barons of Scrine: the Mareward family in Ireland, c.1360–1564 | Jones, Randolph | Article in Book | | 2020 |
| From Norse gods to Norman knights: preliminary analysis of an incised slate from The Coombe, Dublin 8 | Johnson, Ruth | Article in Book | | 2023 |
| From Oirialla to Ottawa - the literary legacy of Thomas D'Arcy McGee | Trimble, Gearóid | Article in Journal | | 2019 |
| From Rathdowney to Rattanakiri: honouring Prof. | Foley, Connell,Foley, Ronan | Article in Book | | 2012 |
| From Roskilde to Dublin : the story of the Sea Stallion from Glendalough | Nicholl, Tríona | Article in Book | | 2009 |
| From splendour to famine | Kelly, James, 1959- | Article in Book | | 1997 |
| From splendour to famine | Kelly, James, 1959- | Article in Book | | 2000 |
| From the bottom up? Grassroots, tree roots and community in the 'Town of the Dark Stranger' | Duffy, Paul | Article in Journal | | 2014 |
| From the Boyne Valley to the Holy Land: the crusading tradition of Geoffrey de Geneville and Jean de Joinville | McDonnell, Ciarán | Article in Book | | 2022 |
| From the Roughty to the Liffey : the story of a teacher | Duffy, Máiréad Tuohy | Monograph or Collective Volume | Obelisk Publishers | 1992 |
| Gaelic Ireland, c.1250-c.1650 : land, lordship and settlement | | Monograph or Collective Volume | Four Courts | 2001 |
| Gaelic Ireland, c.1250-c.1650: Land, Lordship, and Settlement | | Monograph or Collective Volume | Four Courts Press | 2001 |
| Gallery of Irish writers : the Irish writers of the seventeenth century | McGee, Thomas D'Arcy, 1825-1868 | Monograph or Collective Volume | Lemma Publishing Corporation | 1974 |
| Galway : history on a postcard | Duffy, Paul | Monograph or Collective Volume | Currach Press | 2013 |
| Galway city : snapshots through time | Duffy, Paul | Monograph or Collective Volume | Currach Press | 2014 |
| Galway's infrastructure in 1916|Cúrsaí bonneagair i nGaillimh sa bhliain 1916 | Duffy, Paul | Article in Book | | 2016 |
| General Eoin O’Duffy : the political life of an Irish firebrand | Traynor, Jack | Monograph or Collective Volume | McFarland | 2024 |
| General O'Duffy, the National Corporate Party and the Irish Brigade | McGarry, Fearghal | Article in Book | | 1999 |
| Geographical perspectives on the borderlands | Duffy, Patrick J. | Article in Book | | 1989 |
| George Gavan Duffy | Gavan-Duffy, Colm | Article in Journal | | 1983 |
| George Gavan Duffy 1882-1951 : a legal biography | Golding, G. M. | Monograph or Collective Volume | Irish Academic Press | 1982 |
| George Gavan Duffy, 1881-1951 : a legal biography | Goulding, G. M. | Monograph or Collective Volume | [s.n.] | 1982 |
| Gerald of Windsor and the origins of the Geraldines | Duffy, Seán | Article in Book | | 2016 |
| Geraldine endgame : reassessing the origins of the Desmond rebellion, 1573-9 | Edwards, David | Article in Book | | 2016 |
| Geraldine lordship in thirteenth-century Ireland | Smith, Brendan, 1963- | Article in Book | | 2016 |
| Giraldus and the Geraldines | Pryce, Huw | Article in Book | | 2016 |
| Giuseppe Mazzini and Irish nationalism, 1845-70 | Barr, Colin | Article in Journal | | 2008 |
| Glankeen of Borrisoleigh, a Tipperary parish | Kenny, MichaelQuinlan, John | Monograph or Collective Volume | Duffy | 1944 |
| Glendalough House | Duffy, Imelda | Article in Journal | | 1989 |
| Glorious by association: the obituary of Brian Boru | Ní Mhaonaigh, Máire | Article in Book | | 2017 |
| God's jesters and the festive culture of medieval Ireland | Fletcher, Alan J. | Article in Book | | 2004 |
| Godless colleges and mixed education in Ireland : extracts from speeches and writings of Thomas Wyse, Daniel O'Connell, Thomas Davis, Charles Gavan Duffy, Frank Hugh O'Donnell and others | Clifford, Angela | Monograph or Collective Volume | Athol | 1992 |
| Grassroots archaeology : an experiment in monument resurrection and suburban identity in north Dublin | Duffy, Paul | Article in Journal | | 2014 |
| Grievances in Ireland, by one of the tolerant majority | Anonymous | Monograph or Collective Volume | Duffy | 1913 |
| Growing up in the 'Bond' | Duffy, Joan | Monograph or Collective Volume | Choice Publishing & Book Services | 2006 |
| Having the right kit : West Highlanders fighting in Ireland | Caldwell, David H. | Article in Book | | 2007 |
| Health status in medieval Dublin : analysis of the skeletal remains from the abbey of St. Thomas the Martyr | Buckley, Laureen | Article in Book | | 2003 |
| Healthcare and the Troubles : the conflict experience of the Northern Ireland health service, 1968-1998 | Duffy, Ruth | Monograph or Collective Volume | Liverpool University Press | 2024 |
| Heresy in Ireland in the thirteenth and fourteenth centuries | Williams, Bernadette | Article in Book | | 2013 |
| Heritage and history : exploring landscape and place in Co. Meath | Duffy, Patrick J. | Article in Journal | | 2000 |
| Heritage management in modern Monaghan | Bradley, LiamClerkin, ShirleyLennon, Catríona | Article in Book | | 2017 |
| Historians in modern Monaghan | Duffy, Patrick J. | Article in Book | | 2017 |
| Historical revisit : Goddard Henry Orpen, Ireland under the Normans, 1169-1333 (1911-20) | Duffy, Seán | Article in Journal | | 2000 |
| Historical Sketches of Monaghan, from the earliest records to the Fenian movement | Rushe, Denis Carolan | Monograph or Collective Volume | James Duffy & Co. | 1895 |
| History, antiquities, and present state of the parishes of Ballysadare and Kilvarnet, in the county of Sligo: with notices of the O'Haras, the Coopers, the Percevals, and other local families | O'Rourke, T. | Monograph or Collective Volume | James Duffy and Sons | c. 1870 |
| Home Rule in Monaghan | Carville, Gary | Article in Book | | 2017 |
| Housing history, Kilclone, county Meath | Duffy, Patrick J. | Article in Book | | 2011 |
| Housing in early Anglo-Norman Dublin : evidence from an excavation in Back Lane | Walsh, Claire | Article in Book | | 2016 |
| How Dublin remembered the Battle of Clontarf | Fischer, Leonore | Article in Book | | 2013 |
| Hunting for the genetic legacy of Brian Boru in Irish historical sources | Swift, Catherine | Article in Book | | 2017 |
| I. Yonge scripsit: self-promotion, professional networking and the Anglo-Irish literary scribe | O'Byrne, Theresa | Article in Book | | 2019 |
| Identifying Hugh II de Lacy's contribution to Dundrum castle (Co. Down) | MacDonald, Philip | Article in Book | | 2017 |
| Images of Hartford's Irish-Catholic community : 1827-1867 | Duffy, Joseph | Article in Journal | | 1990 |
| Images of Scottish warriors in later Irish bardic poetry | McLeod, Wilson | Article in Book | | 2007 |
| Images of the galloglass in poems to the MacSweeneys | Simms, Katharine | Article in Book | | 2007 |
| Imperial minds : Irish writers and empire in the nineteenth century - Charles Gavan Duffy, Thomas Moore, Charles Lever and Kim | Shanahan, Jim | Article in Book | | 2020 |
| In the time of the making, and breaking, of nations | Livesey, James | Article in Book | | 2001 |
| Inspiring Irish crusaders: St Bernard’s writings and Cistercian impact | Picard, Jean-Michel | Article in Book | | 2022 |
| Interim results of excavations at 152-5 Church Street, Dublin : St Michan's early enclosure and late medieval timber-framed buildings | Dawkes, Giles | Article in Book | NA | 2010 |
| Interlaced scholarship : genealogies and genetics in twenty-first-century Ireland | Swift, Catherine | Article in Book | | 2013 |
| Interview : Duffy of Dundalk | McCafferty, John | Article in Journal | | 2000 |
| Introduction : migration management in Ireland | Duffy, Patrick J. | Article in Book | | 2004 |
| Introduction : recovering Gaelic Ireland c.1250-1650 | Duffy, Patrick J. | Article in Book | | 2001 |
| Inventing countries | Davies, Robert Rees, Sir, 1938-2005 | Article in Book | | 2001 |
| Investigating living standards in medieval Dublin and its region | Murphy, Margaret,Potterton, Michael | Article in Book | | 2005 |
| Ireland after Donnchadh... | | Article in Journal | | 2018 |
| Ireland and Scotland : nation, region, identity; náisiún, régiún, céannacht; nàisean, ceàrn tìre, fèineachd : a record of the inter-disciplinary conference held in Trinity College Dublin and the Irish Film Centre 29-30 September 2000 | | Monograph or Collective Volume | Centre for Irish-Scottish Studies, TCD for the Irish-Scottish Academic Initiative | 2001 |
| Ireland and Scotland, 1014-1169 : contacts and caveats | Duffy, Seán | Article in Book | | 2000 |
| Ireland and the Crusades | NA | Monograph or Collective Volume | Four Courts Press | 2022 |
| Ireland and the Crusades: surveying the field | Coleman, Edward | Article in Book | | 2022 |
| Ireland and the Irish Sea region, 1014-1318 | Duffy, Seán | Thesis | | 1993 |
| Ireland and the middle ages | Duffy, Seán | Monograph or Collective Volume | [s.n.] | 1997 |
| Ireland in the middle ages | Duffy, Seán | Monograph or Collective Volume | Macmillan | 1997 |
| Ireland under the Normans, 1169-1333 | Duffy, SeánOrpen, G. H. (Goddard Henry) | Monograph or Collective Volume | Four Courts | 2005 |
| Ireland's 'Norman' Castles | Duffy SeánSimpson, Linzi | Article in Journal | | 2019 |
| Ireland's epidemiological transition: a preliminary analysis of changes in the cause of death | Pringle, Denis G. | Article in Book | | 2012 |
| Ireland's ethno-religious conflicts: path dependence and its legacies | Ruane, Joseph | Article in Book | | 2012 |
| Ireland's Hastings : the Anglo-Norman conquest of Dublin | Duffy, Seán | Article in Journal | | 1998 |
| Ireland, c.1000–c.1100 | Duffy, Seán | Article in Book | | 2009 |
| Ireland, the Basques and the Spanish Civil War | McCreanor, Kyle | Article in Journal | | 2022 |
| Ireland’s shame : the Blueshirts, Christian Front and the right in Ireland | Hanley, Brian | Monograph or Collective Volume | International Brigade Commemoration Committee | 2016 |
| Irish and Welsh responses to the Plantagenet Empire in the reign of Edward I | Duffy, Seán | Article in Book | | 2016 |
| Irish emigration to Castille in the opening years of the seventeenth century | O'Scea, Ciaran | Article in Book | | 2004 |
| Irish industry and treasury tactics | Field, William | Monograph or Collective Volume | Duffy | 1909 |
| Irish kings and Carinthian dukes : John Lynch revisited | Kehnel, Annette | Article in Book | | 2013 |
| Irish landholding structures and population in the mid-nineteenth century | Duffy, Patrick J. | Article in Journal | | 1977 |
| Irish Modernism The European Influence | Duffy, Enda | Article in Book | | 2019 |
| Irish Rebel, Imperial Reformer: Charles Gavan Duffy and Australian Federation | Farrell, Sean | Article in Book | | 2017 |
| Irish saints in ten countries | Carty, Francis | Monograph or Collective Volume | Duffy | 1942 |
| Irish Studies, 1 | | Monograph or Collective Volume | | 1980 |
| Irishmen and Islesmen in the kingdoms of Dublin and Man, 1052-1171 | Duffy, Seán | Article in Journal | | 1992 |
| James Duffy and Catholic nationalism | Loeber, RolfStouthamer-Loeber, Magda | Article in Book | | 2011 |
| James Duffy, the Young Ireland publisher | MacManus, M. J. | Article in Book | | 1945 |
| James Gandon and his times | Duffy, Hugo | Monograph or Collective Volume | Gandon Editions | 1999 |
| James the usurper of Desmond and the origins of the Talbot-Ormond feud | Crooks, Peter | Article in Book | | 2013 |
| James V, king of Scotland - and Ireland? | Cathcart, Alison | Article in Book | | 2007 |
| James Yonge and the writing of history in late medieval Dublin | Whelan, Caoimhe | Article in Book | | 2013 |
| Janico Markys, Dublin, and the coronation of 'Edward VI' in 1487 | Jones, Randolph | Article in Book | | 2015 |
| John and Ireland : the origins of England's Irish problem | Duffy, Seán | Article in Book | | 1999 |
| John Estrete (fl. 1474-89) : the 'Yorkist' earl of Kildare's 'Lancastrian' lawyer | Jones, Randolph | Article in Book | NA | 2025 |
| John Mitchel and his biographers | Huggins, Michael | Article in Journal | | 2012 |
| John Mitchel, Charles Gavan Duffy and the legacy of Young Ireland | Leonard, David William | Thesis | | |
| John Roque's map of Dublin (1756) : a modern source for medieval property-boundaries | Simpson, Linzi | Article in Book | | 2006 |
| Just Joe : my autobiography | Duffy, Joe, 1956- | Monograph or Collective Volume | Transworld Ireland | 2011 |
| Keeper of the flame | Duffy, Imelda | Article in Journal | | 1991 |
| Kilmeena, Part 2 | Duffy, Jarlath | Article in Journal | | 1986 |
| Kilmeena. Part 1 | Duffy, Jarlath | Article in Journal | | 1985 |
| Kilmeena. Part 3. Pt 1 | Duffy, Jarlath | Article in Journal | | 1987 |
| King John’s expedition to Ireland, 1210 : the evidence reconsidered | Duffy, Seán | Article in Journal | | 1996 |
| Knots and crosses - the Irish cult of St Olave | Duffy, Paul | Article in Journal | | 2019 |
| Land use in medieval Oxmantown | Purcell, Emer | Article in Book | | 2003 |
| Landscapes of south Ulster : a parish atlas of the diocese of Clogher | Duffy, Patrick J. | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1993 |
| Late medieval footwear and leather finds from Chancery Lane, Dublin | Nicholl, John | Article in Book | | 2020 |
| Lectures on the manuscript materials of ancient Irish history: delivered at the Catholic University of Ireland during the sessions of 1855 and 1856 | O'Curry, Eugene | Monograph or Collective Volume | James Duffy | 1861 |
| Let sleeping dogs lie | Duffy, Seán | Article in Journal | | 2009 |
| Letterkenny's Garden of remembrance | Bourke, Wesley | Article in Journal | | 2013 |
| Life in the big city : being at home in Viking Dublin | Boyd, Rebecca | Article in Book | | 2015 |
| Limerick's economy in the Second World War | O'Duffy, Simon | Article in Book | | 2006 |
| Literary reflections on Irish migration in the nineteenth and twentieth centuries | Duffy, Patrick | Article in Book | | 1995 |
| Local government in Monaghan, 1585-2014 | Potter, Matthew | Article in Book | | 2017 |
| Locality and changing landscape : geography and local history | Duffy, Patrick J. | Article in Book | | 1998 |
| Loyalty and its rewards in eighteenth-century New England and County Down : the cousins Crane Brush | Coyle, Eugene A.Duffy, John J. | Article in Journal | | 2001 |
| Lúise Gabhánach Ní Dhufaigh agus scoil Bhríde | | Monograph or Collective Volume | Coscéim | 1993 |
| Luíse Ghabhánach Ní Dhufaigh: Ceannródaí | de Fréine, Celia | Monograph or Collective Volume | LeabhairComhar | 2018 |
| Macroprudential policy in a recovering property market : too much too soon? | Duffy, DavidMcInerneyMcQuinn, Kieran | Article in Journal | | 2016 |
| Making Ireland English in the thirteenth century : the evidence of the Irish lay subsidy of 1292 | Hennessy, Mark | Article in Book | | 2012 |
| Making Twescard : the de Lacy/O'Neill campaign in northern Ulster, 1223-24 | McIlreavy, David | Article in Book | | 2017 |
| Man, Ireland, and England : the English conquest of Ireland and Dublin-Manx relations | McDonald, Russell Andrew | Article in Book | | 2008 |
| Management problems on a large estate in mid-nineteenth-century Ireland : William Steuart Trench's report on the Shirley estate in 1843 | Duffy, Patrick J. | Article in Journal | | 1997 |
| Manuscript sources for the history of medieval Dublin in Trinity College Library | O'Flaherty, Ellen | Article in Book | | 2012 |
| Mapping the Famine in Monaghan | Duffy, Patrick J. | Article in Book | | 2012 |
| Mapping the great lone land : how the Butlers did it | Duffy, Denis | Monograph or Collective Volume | University College Dublin | 1995 |
| Maps of Farney in Longleat, Wiltshire and Warwick County Record Office | Duffy, Patrick J. | Article in Journal | | 1987 |
| Material culture and identity in the southern hinterland of Hiberno-Scandinavian Dublin | Boazman, Gill | Article in Book | | 2019 |
| Mechanics' and similar institutes in Counties Antrim, Armagh and Down, 1820-1870, and their contribution to the education of the working-class adult | Duffy, Seamus Sean | Thesis | | 1986 |
| Medieval Dublin I: proceedings of the Friends of Medieval Dublin symposium 1999 | Duffy, Seán | Monograph or Collective Volume | Four Courts | 2000 |
| Medieval Dublin II : proceedings of the Friends of Medieval Dublin Symposium 2000 | | Monograph or Collective Volume | Four Courts | 2001 |
| Medieval Dublin III : proceedings of the Friends of Medieval Dublin Symposium 2001 | | Monograph or Collective Volume | Four Courts | 2002 |
| Medieval Dublin IV : proceedings of the Friends of Medieval Dublin Symposium | | Monograph or Collective Volume | Four Courts | 2003 |
| Medieval Dublin IX : proceedings of the Friends of Medieval Dublin symposium, 2007 | | Monograph or Collective Volume | Four Courts | 2009 |
| Medieval Dublin V : proceedings of the Friends of Medieval Dublin Symposium, 2003 | | Monograph or Collective Volume | Four Courts | 2004 |
| Medieval Dublin VI : proceedings of the Friends of Medieval Dublin Symposium 2004 | | Monograph or Collective Volume | Four Courts | 2005 |
| Medieval Dublin VII : proceedings of the Friends of medieval Dublin symposium 2005 | | Monograph or Collective Volume | Four Courts | 2006 |
| Medieval Dublin VIII : proceedings of the Friends of Medieval Dublin Symposium 2006 | | Monograph or Collective Volume | Four Courts | 2008 |
| Medieval Dublin X : proceedings of the Friends of Medieval Dublin symposium, 2008 | | Monograph or Collective Volume | Four Courts | 2010 |
| Medieval Dublin XI : proceedings of the Friends of Medieval Dublin symposium, 2009 | | Monograph or Collective Volume | Four Courts | 2011 |
| Medieval Dublin XII : proceedings of the Friends of Medieval Dublin symposium, 2010 | | Monograph or Collective Volume | Four Courts | 2012 |
| Medieval Dublin XIII : proceedings of the Friends of Medieval Dublin symposium, 2011 | | Monograph or Collective Volume | Four Courts | 2013 |
| Medieval Dublin XIV : proceedings of the Friends of Medieval Dublin symposium, 2012 | | Monograph or Collective Volume | Four Courts | 2015 |
| Medieval Dublin XIX : proceedings of the Friends of Medieval Dublin Symposia | NA | Monograph or Collective Volume | Four Courts Press | 2023 |
| Medieval Dublin XV : Proceedings of the Friends of Medieval Dublin symposium, 2013 | | Monograph or Collective Volume | Four Courts | 2016 |
| Medieval Dublin XVI : Proceedings of Clontarf 1014–2014: national conference marking the millennium of the Battle of Clontarf | | Monograph or Collective Volume | Four Courts Press | 2017 |
| Medieval Dublin XVII | | Monograph or Collective Volume | Four Courts | 2019 |
| Medieval Dublin XVIII | | Monograph or Collective Volume | Four Courts | 2020 |
| Medieval Dublin XX | Duffy, Seán | Monograph or Collective Volume | Four Courts Press | 2025 |
| Medieval Ireland : an encyclopedia | | Monograph or Collective Volume | Routledge | 2005 |
| Medieval Irish genealogies and genetics | Jaski, Bart | Article in Book | | 2013 |
| Medieval Monaghan : the evidence of the placenames | Duffy, Joseph see Ó Dufaigh, SeosamhÓ Dufaigh, Seosamh | Article in Journal | | 1999 |
| Medieval pottery in Dublin : new names and some dates | McCutcheon, Clare | Article in Book | | 2000 |
| Medieval Scotland & Ireland : overcoming the amnesia | Duffy, Seán | Article in Journal | | 1999 |
| Mid to late Holocene relative sea-level and sedimentary changes in southwest Ireland | Delaney, Catherine A.,Devoy, Robert J.N.,Jennings, Simon C. | Article in Book | | 2012 |
| Migration in Monaghan history | Fitzgerald, Patrick | Article in Book | | 2017 |
| Moate soldiers of the Great War | Dolan, PeterDuffy TomKeane, SeanKerrigan, GerryMurray, Jimmy | Monograph or Collective Volume | NA | 2019 |
| Modern Ireland | Doherty, Gabriel | Article in Book | | 1997 |
| Modern Ireland | Doherty, Gabriel | Article in Book | | 2000 |
| Monaghan cathedral | Duffy, Joseph | Monograph or Collective Volume | Eason | 1992 |
| Monaghan history and society : interdisciplinary essays on the history of an Irish county | | Monograph or Collective Volume | Geography Publications | 2017 |
| Monaghan in the age of the United Irishmen | MacDonald, Brian | Article in Book | | 2017 |
| Monaghan in the early modern period : continuity and change | Ó Ciardha, Éamonn | Article in Book | | 2017 |
| Monaghan in the later middle ages | Simms, Katharine | Article in Book | | 2017 |
| Monaghan people in the First World War, 1914-1918 | Cullen, Kevin | Article in Book | | 2017 |
| Monaghan’s physical landscape : exploiting its natural resources | Hegarty, Susan | Article in Book | | 2017 |
| Moral repatriation : the response to Irish unmarried mothers in Britain, 1920's - 1960's | Earner-Byrne, Lindsey | Article in Book | | 2004 |
| Moray, Ulster and MacWilliams | Ross, Alasdair | Article in Book | | 2007 |
| More light on the Irish in the service of Imperial Austria | Duffy, Christopher | Article in Journal | | 1983 |
| More on the Balgriffin Cross-Slab | Manning, Conleth | Article in Journal | | 2018 |
| Morebath 1520-1570: A rural parish in the Reformation | Duffy, Eamon | Article in Book | | 1997 |
| Mormaors, mayors and merchants : the early development of municipal government in Dublin | Ó Súilleabháin, Niall | Article in Book | | 2013 |
| Moving titles of a Young Ireland text : Davis, Duffy, McGee and the origins of Tiocfaidh ár lá | Lambkin, Brian | Article in Book | | 2005 |
| My grandfather James Michael Duffy | Flatman, Richard | Article in Journal | | 2005 |
| My heart remembers how. Being the story of Muscraidhe O'Donegan | Linehan, M. P. | Monograph or Collective Volume | Duffy | 1944 |
| My life in two hemispheres | Duffy, Charles Gavan, SirWhyte, John | Monograph or Collective Volume | Irish University Press | 1969 |
| My life in two hemispheres. 2 vols. | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1898 |
| My stand for freedom : autobiography of an Irish republican soldier | Baker, Joe, 1900-Duffy, Jarlath | Monograph or Collective Volume | Westport Historical Society | 1988 |
| Myths, diasporas, and empire: being Irish in the Antipodes in the nineteenth century | Proudfoot, Lindsay J. | Article in Book | | 2012 |
| National Defence Fund against conscription | Duffy, Jarlath | Article in Journal | | 1997 |
| Nationalism and the public sphere: the Nation newspaper and the movement for the repeal of the Union | Kearns, Gerry | Article in Book | | 2012 |
| Nationalist politics in Monaghan from 1918 to the Civil War | Hughes, Fiona | Article in Book | | 2017 |
| Native sources for Gaelic settlement : the house poems | Simms, Katharine | Article in Book | | 2001 |
| Negotiating authority in a colonial capital : Dublin and the Windsor crisis, 1369-78 | Crooks, Peter | Article in Book | | 2009 |
| New insights into the church known as St Crispin's Cell and the site of Rathdown Castle, Co. Wicklow | Burbridge, MarieCoyne, FrankDuffy, PaulHarrington, JohnLove, ColinMogensen, Ejvind | Article in Journal | | 2017 |
| New light on the beginnings of Christ Church cathedral, Dublin | Ó Riain-Raedel, Dagmar | Article in Book | | 2019 |
| Nicholas O'Kearney : the last of the bards of Louth | Duffy, Seán | Monograph or Collective Volume | Cuchulainn Press | 1989 |
| Norse, Gaelic or Hiberno-Scandinavian? The airlabraid of tenth-century Dublin | Casey, Denis | Article in Book | | 2013 |
| Northern Ireland. The way forward as I see it (1) | Duffy, Joseph | Article in Journal | | 1982 |
| Norwegian scing-traders and other skinners in early Dublin | Swift, Catherine | Article in Book | | 2023 |
| O'Duffy's other brigade | McCarthy, Michael | Article in Journal | | 1984 |
| O'Duffy, Eoin: 'Crusade in Spain', introduced by Michael McCormack. Reconquista Press, 2019|Fanning, Tim: 'The Salamanca Diaries: Father McCabe and the Spanish Civil War' Irish Academic Press, 2019 | Dorney, John | Article in Journal | | 2020 |
| Obituary. James Duffy, 1861-1934 | S., A.W. | Article in Journal | | 1935 |
| Obituary. James Francis Lydon (1928-2013) | Duffy, Seán | Article in Journal | | 2014 |
| Ólafr Cúarán, Sigtryggr Silkbeard and the emergence of the Irish kingdom of Dublin | Lyons, Craig | Article in Book | | 2016 |
| Old Dubliners and new Dubliners in Ireland and Britain : a Viking-age story | Dumville, David N. | Article in Book | | 2005 |
| Old mill boards and sea-green slates : milling tradition in the Ballylee area of south Galway | Duffy, Paul | Article in Journal | | 1992 |
| Orange and Green of other years : Gavan Duffy gives his personal views of his contributors | Healy, Cahir | Article in Journal | | 1964 |
| Ordnance Survey maps and official reports | Duffy, Patrick J. | Article in Book | | 2011 |
| Origins | Duffy, Seán | Article in Book | | 1997 |
| Origins | Duffy, Seán | Article in Book | | 2000 |
| Osteological analysis of the human skeletal remains from Aungier Street and Stephen Street, Dublin: a synopsis of the results | Coughlan, Jennie | Article in Book | | 2023 |
| Ostmen, Irish and Welsh in the eleventh century | Duffy, Seán | Article in Journal | | 1995 |
| P. A. Henegan - alias Burton : the dauntless man from Dooncastle | Duffy, Jarlath | Article in Journal | | 1986 |
| P. Patrice Duffy, O.F.M., et sa mission antijanséniste | Ceyssens, Lucien | Article in Journal | | 1952 |
| P.J. Duffy Drapery, Tullow | McQuinn, Christopher P.Murphy, John | Article in Journal | | 2020 |
| Paint and politics - an 'unhealthy intersection. The fate of Sir John Lavery's 'Irish history paintings' exhibited at the Irish Race Congress in Paris in January 1922 | Shortall, Billy | Article in Journal | | 2022 |
| Party piece to masterpiece | Duffy, P.J. | Article in Journal | | 2015 |
| Patricians in medieval Dublin : the careeer of the Sargent family | Smith, Charles | Article in Book | | 2011 |
| Patrick in his own words | Duffy, Joseph | Monograph or Collective Volume | Veritas | 1972 |
| Patrick Pearse and the lost republican ideal | Murphy, Brian P. | Monograph or Collective Volume | James Duffy & Co. | 1991 |
| Patterns of landownership in Gaelic Monaghan in the late 16th century | Duffy, Patrick J. | Article in Journal | | 1981 |
| People, places and parchment : the medieval archives of Dublin city | Clark, Mary | Article in Book | | 2002 |
| Perspectives on the making of the Cavan landscape | Duffy, Patrick J. | Article in Book | | 1995 |
| Philip Duffy and Duffy's Cut among the Irish-American railroading community | Watson, J. Francis | Article in Journal | | 2016 |
| Place-names of County Longford : collected from various sources. Correctly spelled in Irish and fully explained in English. With notes and illustrations | MacGivney, Joseph | Monograph or Collective Volume | JamesDuffy and Co. Ltd. | 1908 |
| Placing migration in history : geographies of Irish population movements | Duffy, Patrick J. | Article in Book | | 2006 |
| Planned migration to Ireland in the seventeenth century | Gillespie, Raymond | Article in Book | | 2004 |
| Plenipotentiaries appointed | Connell, Joseph E.A. | Article in Journal | | 2021 |
| Poverty and place: documenting and representing Toronto's Catholic Irish, 1845-1890 | Jenkins, William | Article in Book | | 2012 |
| Pre-Norman Dublin : capital of Ireland? | Duffy, Seán | Article in Journal | | 1993 |
| Pre-Romanesque churches in county Dublin and its hinterland | Walsh, Nessa | Article in Book | | 2008 |
| Pre-Viking and early Viking-age Dublin : some research questions | Simpson, Linzi | Article in Book | | 2010 |
| Preliminary report on a Viking warrior grave at War Memorial Park, Islandbridge | Daly, NiamhSikora, MaeveÓ Donnabháin, Barra | Article in Book | | 2011 |
| Princes, prelates and poets in medieval Ireland : essays in honour of Katharine Simms | | Monograph or Collective Volume | Four Courts | 2013 |
| Printing in Dublin : the first sixty years | McGuinne, Dermot | Article in Book | | 2011 |
| Purposeful or a parade? Riding the Franchises in Dublin's history | Brennan, Shea | Article in Book | | 2025 |
| Quo vadis? Mapping the Irish 'monastic town' | Clarke, Howard B. | Article in Book | | 2013 |
| Re-examining cáin in Scotland in the twelfth and thirteenth centuries | Broun, Dauvit | Article in Book | | 2013 |
| Reading lessons : famine and the Nation, 1845-1849 | Ryder, Sean | Article in Book | | 1996 |
| Rebellion and rehabilitation : the first earl of Desmond and the English scene | Frame, Robin | Article in Book | | 2016 |
| Reconstructing the manor of Ballyman: The Poor Knights of Christ and the Temple of Solomon in the southern marches of Dublin | McIlreavy, David | Article in Book | | 2022 |
| Recovering Gaelic Ireland, c.1250-c.1650 | Duffy, Patrick J.Edwards, David, 1963-FitzPatrick, Elizabeth | Article in Book | | 2001 |
| Redmond O'Hanlon and the outlaws of Ullster | Duffy, R. Q. | Article in Journal | | 1982 |
| Reformation to restoration | Gillespie, RaymondLennon, Colm, | Article in Book | | 1997 |
| Reformation to Restoration | Gillespie, RaymondLennon, Colm, | Article in Book | | 2000 |
| Regal poise: the ‘crossed-legged’ phenomenon on Irish effigy tombs during the age of the Crusades | Swift, Dave | Article in Book | | 2022 |
| Relations between Ostmen, Irish and Welsh in the eleventh century | Duffy, Seán | Article in Journal | | 1995 |
| Reluctant co-operations: dairy farmers and the spread of creameries in Ireland, 1886-1920 | Breathnach, Proinnsias | Article in Book | | 2012 |
| Remarks on viewing the estate of John Shirley, Esquire, situate at Carrickmacross in the barony of Farney, in the county of Monaghan, Ireland | Duffy, Patrick J. | Article in Journal | | 1987 |
| Remembering the revolution : dissent, culture and nationalism in the Irish Free State | Flanagan, Frances | Monograph or Collective Volume | Oxford University Press | 2015 |
| Resemblance and divergence | NicGhabhann, Niamh | Article in Journal | | 2017 |
| Revealing the medieval riverfront : excavations at 42-51 Strand Street Great / 31-34 Abbey Street Upper, Dublin | Moore, Caitríona | Article in Book | | 2025 |
| Review article. Medieval Dublin | Stout, Matthew | Article in Journal | | 2010 |
| Review article: 'Revisionism' in Tudor reformation studies | Jefferies, Henry A. | Article in Journal | | 2013 |
| Revisiting the ghost of Duffy's cut | Sullivan, Mary | Article in Journal | | 2013 |
| Richard Stanihurst's account of the founding of Ostmantown in 1095 : historical fact or fiction? | Wadden, Patrick | Article in Book | | 2025 |
| Richard Stanihurst's Irish Chronicle and the crown censors, 1577 | Herbage, Patrick James | Article in Book | | 2011 |
| Ring brooches and finger rings from medieval Dublin | Baker, ChristineDeevy, Mary B. | Article in Book | | 2000 |
| Rishworth, McLaughlin and the Shannon Scheme | Duffy, Paul | Article in Journal | | 2017 |
| Rivers and industry, life and death : archaeological excavations on the Coombe bypass and Cork Street realignment, Dublin | Hayden, Alan R. | Article in Book | | 2012 |
| Robert the Bruce's Irish wars : the invasions of Ireland 1306-1329 | | Monograph or Collective Volume | Tempus | 2002 |
| Robert Ware's telling tale : a medieval Dublin story and its significance | Gillespie, Raymond | Article in Book | | 2004 |
| Ruaidhrí Ó Caiside's contribution to the Annals of Ulster | Mc Carthy, Daniel P., 1945- | Article in Book | | 2013 |
| Saints and skinners: excavations along the northern precinct of the abbey of Saint Thomas the Martyr, Dublin | Duffy, Paul | Article in Book | | 2020 |
| Saints’ dedications and the ecclesiastical landscape of Hiberno-Norse Dublin: Irish, Scandinavian and others | Bhreathnach, Edel | Article in Book | | 2020 |
| Sanctuary and symbolism : the origins of the curvilinear plan-form at Clondalkin, County Dublin | Crowley, Clare | Article in Book | | 2010 |
| Scottish mercenary kindreds in Ireland, 1250-1600 | Nicholls, K. W. (Kenneth W.) | Article in Book | | 2007 |
| Securing the Jacobean succession : the secret career of James Fullerton of Trinity College Dublin | Edwards, David, 1963- | Article in Book | | 2007 |
| See Rome and die : the burial-place of Donnchad Mac Briain | Duffy, Séan | Article in Journal | | 2014 |
| Settlement and place-names | Ó Muraíle, Nollaig | Article in Book | | 2001 |
| Seventh son of a seventh son : the life story of a healer | Duffy, MartinNolan, Finbarr | Monograph or Collective Volume | Mainstream | 1992 |
| Sir Charles Gavan Duffy : Young Irelander and Imperial Statesman | Mulvey, Helen F. | Article in Journal | | 1952 |
| Sir Charles Gavan Duffy : Young Irelander and imperial statesman | Mulvey, H. F. | Article in Journal | | 1952 |
| Sir Charles Gavan Duffy's Land Act, 1862 : Victoria through Irish eyes | Doyle, Eugene | Article in Book | | 1986 |
| Six Local Heroes | Wylie, Griffith | Article in Journal | | 2009 |
| Small farm settlement: landscapes in transition | Duffy, Patrick | Article in Journal | | 2017 |
| Social and spatial order in the MacMahon lordship of Airghialla in the late sixteenth century | Duffy, Patrick J. | Article in Book | | 2001 |
| Social conditions and urban conflict in Derry city (1830-70) | Duffy, T. M. | Article in Journal | | 1984 |
| Some Limerick peruke-makers | Duffy, Paul | Article in Journal | | 1994 |
| Some observations on an unpublished version of the Gospel of Nicodemus | Breatnach, Caoimhín | Article in Book | | 2013 |
| Some old illustrations of St Doulagh's Church, Balgriffin, Co. Dublin | Harbison, Peter | Article in Book | | 2009 |
| Some views of the Normans in eleventh- and twelfth-century Ireland | Wadden, Patrick | Article in Book | | 2013 |
| Speaking of '98 : Young Ireland and republican memory | Ryder, Sean | Article in Journal | | 1999 |
| Speeches at the bar and in the senate / by the Right Honourable Wm. Conyngham, lord Plunket, lord high Chancellor of Ireland | Conyngham, William, Lord Plunket | Monograph or Collective Volume | James Duffy | 1856 |
| St Mary's Abbey, Dublin, and its medieval farm suppliers | Stout, Geraldine | Article in Book | | 2015 |
| St Mel's cathedral, Longford, 1840. visitor's guide | Clarkson, Sr. AngelaDuffy, Francis, bishopHughes, KittyMcGuinness, SiveMurray, Tom, Rev.O'Reilly, Colm, bishopSalmon, GerryWhite, Alex | Monograph or Collective Volume | [St Mel's Cathedral] | 2016 |
| St Patrick and the kings | Ó Corráin, Donnchadh | Article in Book | | 2013 |
| St Patrick's Cathedral, Dublin : the recent discovery of the thirteenth-century south nave wall | Simpson, Linzi | Article in Book | | 2015 |
| St Patrick's cathedral, Dublin and its prebendal churches : gothic architectural relationships | O'Neill, Michael | Article in Book | | 2004 |
| St Sepulchre’s palace: new perspectives from recent excavations | Hayden, Alan R. | Article in Book | NA | 2020 |
| State-sponsored migration to the east midlands in the twentieth century | Whelan, Martin | Article in Book | | 2004 |
| Status and statehood : exchange theory and British-Irish relations, 1921-41 | Githens-Mazer, J.O'Duffy, Brendan | Article in Journal | | 2002 |
| Strategies of Comital and Crusader Lordship under Hugh II de Lacy | Brown, Daniel J. F. | Article in Book | | 2017 |
| Structures of import: St Peter’s church, a unique sunken-floored structure and Dublin’s southern suburb | Duffy, Paul | Article in Book | | 2023 |
| Studdert’s bridge, Bunratty, Co. Clare | Duffy, PaulRynne, Etienne | Article in Journal | | 1996 |
| Survival strategies in a time of war: the Blayneys of Monaghan 1640 - 1670 | Brown, DavidÓ Siochrú, Mícheál | Article in Book | | 2017 |
| Swords and district : the political and ecclesiastical background, fifth to twelfth centuries | Mac Shamhráin, Ailbhe | Article in Book | | 2016 |
| T. F. Meagher reminiscences - an unpublished letter (to C. Gavan Duffy) | Ryan, Tom | Article in Journal | | 1976 |
| Tadhg Ó Rodaighe and his school : aspects of patronage and poetic practice at the close of the Bardic era | Ó Macháin, Pádraig | Article in Book | | 2013 |
| Tales from the crypt : the medieval stonework of Christ Church cathedral, Dublin | Moss, Rachel | Article in Book | | 2002 |
| Tales of expansionary fiscal contractions in two European countries : hindsight and foresight | Considine, John,Duffy, David, 1976- | Monograph or Collective Volume | Department of Economics, National University of Ireland, Galway | 2007 |
| Tephra-dated pollen studies of medieval landscapes in the north of Ireland | Bunting, LyndaHall, Valerie A. | Article in Book | | 2001 |
| The "Continuation" of Nicholas Trevet : a new source for the Bruce invasion | Duffy, Seán | Article in Journal | | 1991 |
| The 'cemetery gate' and outer precinct of St Mary's abbey, Dublin | Duffy, Paul | Article in Book | | 2025 |
| The 'long reformation' and its impact on the morphology of provincial towns in Ireland. | Simms, Anngret | Article in Book | | 2012 |
| The 'wild geese' in Austria | Duffy, Christopher | Article in Journal | | 1968 |
| The (legendary) rise of Dál Cais | Jaski, Bart | Article in Book | | 2017 |
| The 1169 invasion as a turning-point in Irish-Welsh relations | Duffy, Seán | Article in Book | | 1999 |
| The abbey of St Thomas the martyr and the le Brun family: piety and patronage in Anglo-Norman Dublin | Foley, Áine | Article in Book | | 2019 |
| The absence of body-snatching in Limerick's history | Duffy, Paul | Article in Journal | | 1992 |
| The age of Pio Nono : the age of Paul Cullen | Duffy, Eamon, 1947- | Article in Book | | 2011 |
| The Anglo-Norman houses of Dublin : evidence from Back Lane | Coughlan, Tim | Article in Book | | 2000 |
| The annals and chronicles of medieval Dublin : an overview | Fletcher, Alan J. | Article in Book | | 2008 |
| The annals of John de Pembridge as a source for the history of Dublin and its hinterland | Williams, Bernadette | Article in Book | | 2023 |
| The archaeology of Gaelic lordship east and west of the Foyle | McNeill, T. E. | Article in Book | | 2001 |
| The archaeology of medieval James’s Street, Dublin | Giacometti, Antoine | Article in Book | | 2019 |
| The archbishop and citizens of Dublin during Hugh de Lacy's Irish rebellion, 1223-4 | Brown, Daniel J. F. | Article in Book | | 2016 |
| The archbishop's residence at Swords : castle or country retreat? | Stalley, Roger | Article in Book | | 2006 |
| The architecture of defiance...political motivation in castle design | Duffy, Paul | Article in Journal | | 2015 |
| The Armagh Mechanics' Institute | Duffy, Seamus | Article in Journal | | 1988 |
| The arrivals of the Dominicans in Ireland in 1224 and the question of Dublin and Drogheda : the sources re-examined | Williams, Bernadette | Article in Book | | 2013 |
| The ascent and descent of Desmond under Lancaster and York | Crooks, Peter | Article in Book | | 2016 |
| The Atlantic ends of Europe revisited | Dodgshon, Robert A. | Article in Book | | 2012 |
| The authority of the contemplative in Muirchú's life of Patrick | Bracken, Damian | Article in Book | | 2013 |
| The autobiographies of John Mitchel and Charles Gavan Duffy : a study in contrasts | Sloan, Barry | Article in Journal | | 1987 |
| The bailiffs, provosts and sheriffs of the city of Dublin | Bairéad, Eoin C. | Article in Book | | 2015 |
| The ballad poetry of Ireland. | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1845 |
| The bank, the ditch and the water : Hiberno-Norse discoveries at Church Street and Hammond Lane, Dublin | Phelan, Sinéad | Article in Book | | 2010 |
| The battle for the Geraldines : a contested legacy in nineteenth-century Ireland | Cullen, Ruairí | Article in Book | | 2016 |
| The battle of Clontarf in later Irish tradition | Ní Úrdail, Meidhbhín | Article in Book | | 2017 |
| The battle of Clontarf: the archaeological evidence | Halpin, Andrew | Article in Book | | 2017 |
| The battle of Glenn Máma, Dublin, and the high-kingship of Ireland : a millennial commemoration | Mac Shamhráin, Ailbhe | Article in Book | | 2001 |
| The Blueshirts | Manning, Maurice | Monograph or Collective Volume | Gill & Macmillan | 2006 |
| The Blueshirts | Manning, Maurice | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Blueshirts and Irish politics | Cronin, Mike | Monograph or Collective Volume | Four Courts | 1997 |
| The Blueshirts in Ireland : the movement and its members, 1932-5 | Cronin, Mike | Thesis | | |
| The Blueshirts in Limerick 1932-1936 | Ryan, Des | Article in Journal | | 2005 |
| The Blueshirts in Waterford, 1932-1934 | Broderick, Eugene | Article in Journal | | 1994 |
| The Blueshirts of Ireland during the 1930s : fascism inverted | Finnegan, Richard B. | Article in Journal | | 1989 |
| The Book of Howth's account of the Lambert Simnel conspiracy: an eyewitness account? | Jones, Randolph | Article in Book | | 2019 |
| The Booth School and other matters at Ayle | Duffy, Jarlath | Article in Journal | | 1988 |
| The boss Duffy of Hacketstown | Duffy, Robert | Article in Journal | | 1999 |
| The British Isles | Webber, G. C. | Article in Book | | 1987 |
| The British perspective | Duffy, Seán | Article in Book | | 2003 |
| The Bruce brothers and the Irish sea-world, 1306-29 | Duffy, Seán | Article in Journal | | 1991 |
| The Bruce invasion of Ireland : a revised itinerary and chronology | Duffy, Seán | Article in Book | | 2002 |
| The Bruce invasion of Ireland : an examination of some problems | Lydon, James F. | Article in Book | | 2002 |
| The Carrigan Committee and child sexual abuse in twentieth-century Ireland | Maguire, Moira J. | Article in Journal | | 2007 |
| The Carsonite revolution, 1910-1921 | Duffy, Francis | Article in Journal | | 1958 |
| The Cathar heresy and Anglo-Norman Ireland | Duffy, PaulO'Keeffe, TadhgPicard, Jean-Michel | Article in Book | | 2017 |
| The Cathedral of SS Patrick and Felim, Cavan, 1919-47 | Duffy, Francis | Article in Journal | | 1992 |
| The changing rural landscape 1750-1850 : pictorial evidence | Duffy, Patrick J. | Article in Journal | | 1994 |
| The Chateau Narbonnais of Toulouse during the siege of 1218 | Catalo, Jean | Article in Book | | 2017 |
| The church lands of the diocese of Dublin : reconstruction and history | MacCotter, Paul | Article in Book | | 2013 |
| The church of Bearach, the grange of Baldoyle and the town of the dark stranger | Duffy, Paul | Article in Book | | 2016 |
| The city and the suburb : medieval Dublin and Oxmantown | Purcell, Emer | Article in Book | | 2005 |
| The Civic Guard and their arrival in Bandon | Duggan, Vincent | Article in Journal | | 2023 |
| The Civil War continued? The IRA versus the Blueshirts | Hanley, Brian | Article in Book | | 2017 |
| The coinage and economy of Hiberno-Scandinavian Dublin | Woods, Andrew | Article in Book | | 2013 |
| The conquest of Ireland | Smith, Brendan, 1963- | Article in Book | | 1997 |
| The conquest of Ireland | Smith, Brendan, 1963- | Article in Book | | 2000 |
| The contribution of insect remains to an understanding of the environment of Viking Age and medieval Dublin | Reilly, Eileen | Article in Book | | 2003 |
| The conversion of the Vikings of Dublin | Sheldon, Gwendolyn | Article in Book | | 2015 |
| The court poet in early Ireland | Woolf, Alex | Article in Book | | 2013 |
| The date and authorship of Cath fhochairte Brighite | Duffy, John Joseph | Thesis | | 1987 |
| The defence of Dublin in the Middle Ages | Lydon, James F. | Article in Book | | 2003 |
| The distribution of early medieval ecclesiastical sites in Ireland | Stout, Matthew | Article in Book | | 2012 |
| The Dominican annals of Dublin | Williams, Bernadette | Article in Book | | 2001 |
| The Dublin Vikings and the Clann Cholmáin kings of the Southern Uí Néill | O'Flynn, Eoin | Article in Book | | 2013 |
| The Duffy and Sillery families of Mentrim, Co. Meath | Flatman, Richard | Article in Journal | | 2008 |
| The Duffy clan : plus 200 years' history of the Duffys of Mace | Duffy, Peter | Monograph or Collective Volume | PCD Publications | 1992 |
| The Duffy publishing family | Brennan, John | Article in Journal | | 2013 |
| The dynastic ramifications of the Geraldines | MacCotter, Paul | Article in Book | | 2016 |
| The early Geraldine castles of Ireland : some case studies | Simpson, Linzi | Article in Book | | 2016 |
| The early medieval ecclesiastical enclosures of Dublin: exploring their character, chronology and evolving function in light of excavations across Ireland. | Harney, Lorcan | Article in Book | | 2020 |
| The earthen banks and walled defences of Dublin's north-east corner | Scally, Georgina | Article in Book | | 2002 |
| The effects of the Spanish Civil War on Ireland | Armstrong, Ken | Article in Journal | | 2006 |
| The English Isles : cultural transmission and political conflict in Britain and Ireland, 1100-1500 | | Monograph or Collective Volume | Four Courts | 2013 |
| The enigma of Charles Gavan Duffy : looking for clues in Australia | Knowlton, Steven | Article in Journal | | 1996 |
| The evolution of estate properties in south Ulster 1600-1900 | Duffy, Patrick J. | Article in Book | | 1988 |
| The excavation of an early roadway and Hiberno-Norse houses at the Coombe | Walsh, Claire | Article in Book | | 2012 |
| The excavation of pre-norman burials and ditch near St. Michan's church, Dublin | Meehan, Roseanne | Article in Book | | 2004 |
| The excavation of pre-Norman defences and houses at Werburgh Street, Dublin : a summary | Hayden, Alan R. | Article in Book | | 2002 |
| The exiled earl and soon-to-be-saint. Hugo de Lacy and the Albigensian Crusade | Duffy, Paul | Article in Journal | | 2016 |
| The famine in County Monaghan | Duffy, Patrick J. | Article in Book | | 1997 |
| The Famine Irish in Newcastle & Co Durham : Sources for Genealogical Research | Duffy, Godfrey | Article in Journal | | 2001 |
| The Fenians : for the Old Land | Duffy, Luke J. | Article in Book | | 1942 |
| The fertility transition in Ireland and Scotland c.1880-1930 | Duffy, NiallÓ Gráda, Cormac | Article in Book | | 1995 |
| The first Ulster plantation : John de Courcy and the men of Cumbria | Duffy, Seán | Article in Book | | 1995 |
| The forgotten brigade | Glazier, Michael | Article in Journal | | 1955 |
| The foundation relics of Christ Church cathedral and the origins of the diocese of Dublin | Ó Floinn, Raghnall | Article in Book | | 2006 |
| The Gaelic account of the Bruce invasion, Cath Fhochairte Brighite : medieval romance or modern forgery? | Duffy, Seán | Article in Journal | | 1988 |
| The Garda Síochána in Donegal (1922-1923) | Beattie, Seán | Article in Journal | | 2022 |
| The General and his drivers - Eoin O'Duffy's chauffeurs | Traynor, Jack | Article in Journal | | 2025 |
| The George Gavan Duffy papers | Kotsonouris, Mary | Article in Journal | | 2000 |
| The Geraldines and Gaelic culture | Simms, Katharine | Article in Book | | 2016 |
| The Geraldines and medieval Ireland : the making of a myth | | Monograph or Collective Volume | Four Courts Press | 2016 |
| The Geraldines and the conquest of Ireland | Veach, Colin | Article in Book | | 2016 |
| The Geraldines and the culture of the wider world | Byrne, Aisling | Article in Book | | 2016 |
| The Geraldines and the Irish : intermarriage, ecclesiastical patronage and status | Booker, Sparky | Article in Book | | 2016 |
| The ghosts of Duffy's Cut : the Irish who died building America's most dangerous stretch of Railroad | OthersWatson, William E. | Monograph or Collective Volume | Conn Praeger | 2006 |
| The Great Earl of Kildare (1456-1513) and the creation of the English Pale | Ellis, Steven G., 1950- | Article in Book | | 2016 |
| The great Irish famine | O'Rourke, John | Monograph or Collective Volume | Veritas | 1989 |
| The Greenshirts : fascism in the Irish Free State 1935-1945 | White, Martin | Thesis | | |
| The growth and decline of a medieval suburb? | O'Donovan, Edmond | Article in Book | | 2003 |
| The guild merchant of Dublin | Eggerer, Elmar W. | Article in Book | | 2005 |
| The hermits and anchorites of medieval Dublin | Ó Clabaigh, Colmán N. | Article in Book | | 2010 |
| The hermits of St Augustine in medieval Dublin : their history and archaeology | Duffy, Sean,Simpson, Linzi, | Article in Book | | 2009 |
| The hill of Tara | Callary, Robert R. | Monograph or Collective Volume | Duffy | 1955 |
| The history of the Irish Citizen Army | Fox, R. M. | Monograph or Collective Volume | Duffy | 1943 |
| The homecoming of Sergeant John Duffy, U.S. Army | Ó Murchadha, Ciarán | Article in Journal | | 2009 |
| The Hospital of St. John the Baptist in medieval Dublin : functions and maintenance | O'Keeffe, Grace | Article in Book | | 2009 |
| The Irish at Hochkirch, 1758 | Duffy, Christopher | Article in Journal | | 1976 |
| The Irish borderlands: regional identities and national divisions | Graham, Brian,Nash, Catherine | Article in Book | | 2012 |
| The Irish Free State's first diplomats : jealousy, anti-semitism and revenge | Kelly, Darren | Article in Journal | | 2016 |
| The Irish in Britain, 1798-1916 : a bibliography | Duffy, G. F. | Monograph or Collective Volume | | 1993 |
| The Irish in the imperial service : some observations | Duffy, Christopher | Article in Journal | | 1961 |
| The Irish Volunteers, 1913-1915 : recollections and documents | Martin, F. X. (Francis Xavier), 1922-2000 | Monograph or Collective Volume | J. Duffy | 1963 |
| The Irish, the Vikings and the English : new archaeological evidence from excavations at Golden Lane, Dublin | O'Donovan, Edmond | Article in Book | | 2008 |
| The Islandeady ambush | Duffy, Jarlath | Article in Journal | | 1990 |
| The kings of Dublin and Leinster before the battle of Clontarf | Bhreathnach, Edel | Article in Book | | 2017 |
| The landscape and settlements of the Uí Dhálaigh poets of Muinter Bháire | FitzPatrick, Elizabeth | Article in Book | | 2013 |
| The last coins struck at the Limerick mint | Duffy, Paul | Article in Journal | | 1980 |
| The League of North and South : an episode in Irish history, 1850-1854 | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1886 |
| The leather finds from excavations at Chancery Lane and Ship Street Great, Dublin | Nicholl, John | Article in Book | | 2025 |
| The life, times and contemporaries of Lord Cloncurry | Fitzpatrick, W. J., 1830-1895 | Monograph or Collective Volume | Duffy | 1855 |
| The Limerick Mont de Piété - a further note | Duffy, Paul | Article in Journal | | 1995 |
| The longphort of Dublin : lessons from Woodstown, County Waterford, and Annagassan, County Louth | Simpson, Linzi | Article in Book | | 2012 |
| The lords of Galloway, earls of Carrick, and the Bissetts of the Glens : Scottish settlement in thirteenth century Ulster | Duffy, Seán | Article in Book | | 2004 |
| The lost coronation oath of Edward I : rediscovered in a Dublin manuscript | Williams, Bernadette | Article in Book | | 2009 |
| The Loughross Gaelic scholar, Dr James Woods | Duffy, Seán | Article in Journal | | 1989 |
| The mapping of Ireland's cultural landscape, 1550-1630 | Andrews, J. H. (John Harwood) | Article in Book | | 2001 |
| The maritime cultural landscape in medieval Gaelic Ireland | Breen, Colin | Article in Book | | 2001 |
| The marquis of Clanricarde as Irish lord deputy, 1650-52 | Duffy, Eamon P. | Thesis | | 1965 |
| The medieval archaeology of Carrickfergus town (Co. Antrim): a brief survey | Ó Baoill, Ruairí | Article in Book | | 2017 |
| The medieval bishops of Elphin and the lost church at Kilteasheen | Finan, Thomas | Article in Book | | 2013 |
| The medieval city wall and the southern line of Dublin's defences : excavations at 14-16 Werburgh Street | Simpson, Linzi | Article in Book | | 2008 |
| The medieval hospital in Ireland: a comment on the crusader connection | Ivory, Thomas | Article in Book | | 2022 |
| The medieval Irish town | Otway-Ruthven, Annette Jocelyn, 1909-1989 | Article in Book | | 2010 |
| The medieval manor of Clontarf, 1171-1540 | Lennon, Colm | Article in Book | | 2012 |
| The medieval vill of Portmarnock | Moriarty, Colm | Article in Book | | 2011 |
| The merchant conquistadors : medieval Bristolians in Dublin | O'Keeffe, Grace | Article in Book | | 2013 |
| The Military-Religious Orders in Ireland: their patrons and their purpose | Nicholson, Helen J. | Article in Book | | 2022 |
| The mills of County Monaghan, 1800-1950 | Hamond, Fred | Article in Book | | 2017 |
| The Monasticon Hibernicum Project : the diocese of Dublin | Mac Shamhráin, Ailbhe | Article in Book | | 2005 |
| The morphology of Gaelic lordly sites in north Connacht | O'Conor, Kieran Denis | Article in Book | | 2001 |
| The murder of John Dowdall, sheriff of Louth, 1402 | Smith, Brendan, 1963- | Article in Book | | 2013 |
| The museum of the Irish Famine : exhibiting Ireland's tragic history | Duffy, Terence | Article in Journal | | 1996 |
| The museum of the Irish Famine : exhibiting Ireland’s tragic history | Duffy, Terence | Article in Journal | | 1996 |
| The myth of 'Silken Thomas' | Brady, Ciarán | Article in Book | | 2016 |
| The Nation reading rooms | Higgins, Roisín | Article in Book | | 2011 |
| The National Athletic Association of Ireland and Irish athletics, 1922-1937 : steps on the road to athletic isolation | Hunt, Tom | Article in Journal | | 2016 |
| The nature of the medieval frontier in Ireland | Duffy, Patrick J. | Article in Journal | | 1983 |
| The nuts and bolts of making landscapes in the mid-nineteenth century | Duffy, Patrick J. | Article in Journal | | 1997 |
| The occupational profile of pre-modern towns : the case of Dublin, c.1190-1640 | Campbell, Bruce M.S. | Article in Book | | 2025 |
| The occupational profile of pre-modern towns : the case of Dublin, c.1190-1640 | Campbell, Bruce M.S. | Article in Book | | 2025 |
| The original statuary | Duffy, Joseph | Article in Book | | 1998 |
| The origins of the Irish in Newcastle and County Durham | Duffy, Godfrey | Article in Journal | | 2002 |
| The outbreak of the 1641 Rising in County Monaghan | Robinson, Andrew | Article in Book | | 2017 |
| The Palmerston estate in county Sligo : improvement and assisted emigration before 1850 | Power, Thomas P. | Article in Book | | 2004 |
| The parliamentary subsidy in fifteenth-century County Dublin and the men who collected it | Coleman, Brian | Article in Book | | 2020 |
| The patriot parliament of 1689, with its statutes, roles and proceedings | Davis, Thomas OsborneDuffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1893 |
| The philosophy of Irish Ireland | Moran, David Patrick, 1869-1936 | Monograph or Collective Volume | Duffy | 1905 |
| The poetry of The Nation, 1842-1848 : a descriptive and critical study with some reference to the influence on the poetic development of W. B. Yeats | Bradley, William | Thesis | | |
| The port of Westport, 1800-1850 | Duffy, Jarlath | Article in Journal | | 1995 |
| The port of Westport, 1850-1900 | Duffy, Jarlath | Article in Journal | | 1998 |
| The portrayal of women in medieval Irish religious poetry | Murray, Kevin | Article in Book | | 2013 |
| The price of containment : deaths and debate on Northern Ireland in the House of Commons, 1968-94 | O'Duffy, Brendan | Article in Book | | 1996 |
| The priory of All Hallows and the Old College : archaeological investigations in Front Square, Trinity College Dublin | Simpson, Linzi | Article in Book | | 2013 |
| The priory of All Hallows and Trinity College, Dublin : recent archaeological discoveries | Simpson, Linzi | Article in Book | | 2002 |
| The problem of degeneracy | Duffy, Seán | Article in Book | | 1997 |
| The pubs of Hacketstown | Duffy, Robert | Article in Journal | | 2001 |
| The quarrel between Gavan Duffy and John Mitchel : implications for Ireland | Knowlton, S. R. | Article in Journal | | 1989 |
| The radicalisation of the Gaelic Athletic Association in Ulster, 1912-1923 : the role of Owen O'Duffy | McAnallen, Dónal | Article in Book | | 2015 |
| The records of Dublin's late medieval guild of carpenters | Hendriks, Sarah | Article in Book | | 2025 |
| The religious houses of Tudor Dublin : their communities and resistance to the Dissolution 1537-41 | Scott, Brendan | Article in Book | | 2006 |
| The republicanisation of Irish society, 1932-48 | Girvin, Brian | Article in Book | | 2003 |
| The resurrection of Hungary, a parallel for Ireland | Griffith, Arthur | Monograph or Collective Volume | James Duffy & Co., M.H. Gill & Son, Sealy, Bryers & Walker | 1904 |
| The rise and fall of Geoffrey Morton, mayor of Dublin, 1303-4 | Connolly, Philomena | Article in Book | | 2001 |
| The role of St.Thomas's abbey in the early development of Dublin's western suburb | Duddy, Cathal | Article in Book | | 2003 |
| The royal dynasties of Dublin and the Isles in the eleventh century | Duffy, Seán | Article in Book | | 2006 |
| The sacred dance of the Irish circus : rural Ireland and traveling shows and show people 1922-1972 | McCarthy, TonyÓ hAodha, Mícheál | Monograph or Collective Volume | Maunsel & Company|Academica Press | 2015 |
| The saint's tale | Duffy, Seán | Article in Book | | 2014 |
| The search for the ninth-century "longphort" : early Viking-age Norse fortifications and the origins of urbanization in Ireland | Gibbons, MichaelGibbons, Myles, | Article in Book | | 2008 |
| The second report of the Commissioners for Education inquiry for County Cavan 1824-27 | Duffy, Francis | Article in Journal | | 1998 |
| The shape of the parish | Duffy, Patrick J. | Article in Book | | 2006 |
| The Sheriff of Dublin in the fourteenth century | Foley, Áine | Article in Book | | 2012 |
| The siege and surrender of Galway, 1651-1652 | Duffy, E. P. | Article in Journal | | 1983 |
| The spectrum of occupations and the influence of guilds and Gaffeln in medieval Dublin and Cologne | Rothaupt, Valentin | Article in Book | | 2025 |
| The splendid years : recollections as told to Edward Kenny | Nic Shiubhlaigh, Máire, 1883-1958 | Monograph or Collective Volume | James Duffy & Co. | 1955 |
| The stained glass | | Article in Book | | 1998 |
| The Stein Brown and Company distillery tokens | Duffy, Paul | Article in Journal | | 1985 |
| The story of a West-Roscommon Fenian | Jordan, Bernadette | Article in Journal | | 1998 |
| The synod of Dublin in 1080 | Holland, Martin | Article in Book | | 2002 |
| The territorial identity of Kildare's landscapes | Duffy, Patrick J. | Article in Book | | 2006 |
| The territorial organization of Gaelic landownership and its transformation in County Monaghan, 1591-1640 | Duffy, Patrick J. | Article in Journal | | 1981 |
| The three lives of Gavan Duffy | Pearl, C. | Monograph or Collective Volume | O'Brien Press|New South Wales University Press | 1979 |
| The Tilson case : church and state in 1950s Ireland | Jameson, David | Monograph or Collective Volume | Cork University Press | 2023 |
| The tithe disturbances in Clonmany | Duffy, G. F. | Article in Journal | | 2005 |
| The topography of St Mary's Cistercian abbey and precinct, Dublin | Stout, Geraldine | Article in Book | | 2012 |
| The town of Monaghan : a place inscribed in street and square | Duffy, Patrick J. | Article in Book | | 2004 |
| The trade union pint : the unlikely union of Guinness and the Larkins | Martin, Duffy | Monograph or Collective Volume | Liberties Press | 2012 |
| The Turnberry Band | Duffy, Seán | Article in Book | | 2013 |
| The two Colmáns | O'Flynn, Eoin | Article in Book | | 2013 |
| The Uí Dhomhnaill and their books in early sixteenth-century Ireland | Cunningham, BernadetteGillespie, Raymond | Article in Book | | 2013 |
| The Welsh conquest of Ireland | Duffy, Seán | Article in Book | | 2015 |
| The Westport workhouse | Duffy, Jarlath | Article in Journal | | 2004 |
| The widow Sammon's fight for her holding | Duffy, Jarlath | Article in Journal | | 1987 |
| The wild goose and the eagle : a life of Marshal von Browne, 1705-57 | Duffy, Christopher | Monograph or Collective Volume | Chatto and Windus | 1964 |
| The world in Paris and Ireland too : The French diplomacy of Sinn Féin, 1919-1921 | Ranger, Pierre | Article in Journal | | 2011 |
| The world of medieval Irish learning | Bhreathnach, Edel | Article in Book | | 2013 |
| Thirty pieces of silver : informers of twentieth-century Ireland | Duffy, Angela | Thesis | | |
| Thirty years on : a personal memoir of the "Friends of Medieval Dublin" | Clarke, Howard B. | Article in Book | | 2008 |
| Thomas D'Arcy McGee and Charles Gavin Duffy's "The Irish Chiefs" : diasporic trajectories of a Young Ireland text | Lambkin, Brian | Article in Journal | | 2005 |
| Thomas Davis | Clifford, BrendanDuffy, Charles Gavan, Sir | Monograph or Collective Volume | Aubane Historical Society | 2000 |
| Thomas Davis, the memoirs of an Irish patriot, 1840-1846 | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1890 |
| Three poems by W.J. Duffy. "The Lads from the heather", "Oh Glendalough", "Song" | Duffy, W.J. | Article in Journal | | 1996 |
| Through the fractured lens of the Civil Survey - an appraisal of buildings across the mid-seventeenth century Dublin region | Horner, Arnold | Article in Book | | 2012 |
| Through the fractured lens of the Civil Survey : an appraisal of buildings across the mid-seventeenth-century Dublin region | Horner, Arnold | Article in Book | | 2012 |
| To and from Ireland : planned migration schemes c.1600-2000 | | Monograph or Collective Volume | Geography Publications | 2004 |
| Tobar Aibheog, Lismullyduff : its traditions and associations | O Duffy, B. | Article in Journal | | 1968 |
| Tower houses and late medieval secular settlement in County Limerick | Donnelly, Colm J. | Article in Book | | 2001 |
| Town and Crown : The Kings of England and their City of Dublin | Duffy, Seán | Article in Book | | 2005 |
| Trajectories of development, modalities of enclosure: land grabbing and the struggle over geography | Nally, David P. | Article in Book | | 2012 |
| Transmission and circulation of French texts in medieval Ireland: the other Simon de Montfort | Picard, Jean-Michel | Article in Book | | 2017 |
| Trends in nineteenth- and twentieth-century settlement | Duffy, Patrick J. | Article in Book | | 1999 |
| Trim before 1224 : new thoughts on the caput of de Lacy lordship in Ireland | O'Keeffe, Tadhg | Article in Book | | 2017 |
| Trouble with the archbishop in thirteenth-century Dublin | Smith, Charles | Article in Book | | 2015 |
| Tugaimís onóir do chuimhne James Duffy | Ó h-Annluain, Ruaidhrí | Article in Journal | | 1945 |
| Tuitio Fidei? The Irish Hospitallers at war | Virtuani, Paolo | Article in Book | | 2022 |
| Turf, steam and the Stein Browne distillery chimney | Duffy, Paul | Article in Journal | | 1994 |
| Two and fifty Irish saints | Carty, FrancisRyan, John | Monograph or Collective Volume | Duffy | 1941 |
| Two lists of Ó Dubhda chieftains of Uí Fhiachrach | Ó Muraíle, Nollaig | Article in Book | | 2013 |
| Ulster and the Irish sea region in the twelfth century | Duffy, Seán | Article in Journal | | 1996 |
| Ulster political lives, 1886–1921 | | Monograph or Collective Volume | Royal Irish Academy | 2016 |
| Under the Hawthorn Tree | Duffy, Paul | Article in Journal | | 2018 |
| Unity in diversity : a comparative analysis of thirteenth-century Kilkenny, Kalkar and Sopron | Simms, Anngret | Article in Book | | 2013 |
| Unwritten landscapes : reflections on minor place-names and sense of place in the Irish countryside | Duffy, Patrick J. | Article in Book | | 2004 |
| Urban elite : the county and civic elite of later medieval Dublin | Coleman, Brian | Article in Book | | 2016 |
| Using GIS to map the evolution of the Gaeltacht | Duffy, PatrickMcCarron, StephenNí Bhrádaigh, EmerWalsh, John | Article in Journal | | 2007 |
| Viking camps in ninth-century Ireland : sources, locations and interactions | Downham, Clare | Article in Book | | 2010 |
| Viking identities in Ireland : it's not all black and white | Downham, Clare | Article in Book | | 2011 |
| Viking warrior burials in Dublin : is this the longphort? | Simpson, Linzi | Article in Book | | 2005 |
| Violence in Northern Ireland, 1969-1994 : sectarian or ethno-national | O'Duffy, Brendan | Article in Journal | | 1995 |
| Violence, citizenship amd virility : the making of an Irish fascist | McGarry, Fearghal | Article in Journal | | 2005 |
| Violent crime in medieval County Dublin : a symposium of degeneracy? | Foley, Áine | Article in Book | | 2010 |
| Violent politics : a theoretical and empirical analysis of two centuries of political violence in Ireland | O’Duffy, Brendan | Thesis | | |
| W.J. Duffy | O'Brien, Patrick | Article in Journal | | 1996 |
| War, revolution and the crisis of the British empire | Duffy, Michael | Article in Book | | 1991 |
| West Side story : archaeological excavations at Cornmarket and Bridge Street Upper, Dublin - a summary account | Hayden, Alan R. | Article in Book | | 2000 |
| Westport estate and town : an example of planned settlement according to picturesque principles, parts 1-2 | Duffy, Fintan | Article in Journal | | 2001 |
| What happened at the Battle of Clontarf? | Duffy, Séan | Article in Journal | | 2014 |
| What the Vikings really thought about Clontarf : a speculation | Fischer, Lenore | Article in Book | | 2015 |
| Who's your Paddy? Racial expectations and the struggle for Irish American identity | Duffy, Jennifer Nugent | Monograph or Collective Volume | New York University Press | 2013 |
| Why were there so few papal provisions in thirteenth-century Dublin? | Smith, Thomas W. | Article in Book | | 2020 |
| Will the world break your heart? : dimensions and consequences of Irish-American assimilation | Ibson, John Duffy | Monograph or Collective Volume | Garland Publishing | 1990 |
| William Gorm de Lacy : 'chiefest champion in these parts of Europe' | Veach, Colin T.Verstraten Veach, Freya | Article in Book | | 2013 |
| William Hogeson, mayor of Dublin, fl. 1493–1519 | Jones, Randolph | Article in Book | | 2023 |
| William J. Duffy | P., N.J. | Article in Journal | | 1997 |
| William Petty, topographer | Andrews, J. H. (John Harwood),Rankin, K. J. | Article in Book | | 2012 |
| William Smith O'Brien. A plea for mercy from the people of Ireland | Duffy, Godfrey | Article in Journal | | 1994 |
| William Smith O’Brien : petitions of mercy | Duffy, Godfrey F. | Article in Journal | | 1995 |
| William [Guillermo] Bowles: geographer and natural scientist in late eighteenth-century Spain | O'Flanagan, Patrick | Article in Book | | 2012 |
| With a little help from their friends : assisted emigration schemes, 1700-1845 | Parkhill, Trevor | Article in Book | | 2004 |
| Women in medieval Dublin : an introduction | McMorrow, Jessica | Article in Book | | 2001 |
| Women in medieval Dublin : their legal rights and economic power | Conlon, Lynda | Article in Book | | 2003 |
| Wood Quay and later waterfront revetments in Anglo-Norman Dublin: a reappraisal of their carpentry | Geaney, Máire | Article in Book | | 2019 |
| Woodland cover in pre-modern Ireland | Nicholls, K. W. (Kenneth W.) | Article in Book | | 2001 |
| Writing history in the digital age: the battle of Clontarf goes online | Bleier, RomanBooker, SparkyO’Flynn, EoinPeters, Cherie N.Wade, ChristinaWhelan, Caoimhe | Article in Book | | 2017 |
| Writing in Irish in County Monaghan : thirteen hundred years of tradition | Smith, Peter | Article in Book | | 2017 |
| Writing Ireland : literature and art in the representation of Irish place | Duffy, Patrick J. | Article in Book | | 1997 |
| Young Ireland : a fragment of Irish history | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1880 |
| Young Ireland and the writing of Irish history | Quinn, James | Monograph or Collective Volume | University College Dublin Press | 2015 |
| Young Ireland. A fragment of Irish history, 1840-45. 2 vols. Final revision | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1896 |
| ‘A hole in heaven’s gable’ : Monaghan and the intellectual formation of Patrick Kavanagh | Tomaney, John | Article in Book | | 2017 |
| ‘A real Irish historian’. Seán Duffy talks to James Lydon who last year retired as Lecky Professor of Modern History in Trinity College, Dublin | Duffy, Seán | Article in Journal | | 1995 |
| ‘An endless tunnel under the earth’ : the Black Pig’s Dyke in County Monaghan | Ó Drisceoil, Cóilín | Article in Book | | 2017 |
| ‘Border Gothic’ : history, violence and ‘The Border’ in the writings of Eugene McCabe | Ó Ciardha, Éamonn | Article in Book | | 2017 |
| ‘Immortality in the timeless now’ : Patrick Kavanagh and The Bell | Mathews, Kelly | Article in Book | | 2017 |
| ‘Important places and great events’ : Patsy Duffy’s diaries of everyday life in Monaghan in the 1930s and 1940s | Duffy, Patrick J. | Article in Book | | 2017 |
| ‘Insane Féiners’ : the 1916 Rising in County Monaghan and its commemoration in 1966 | Dooley, Terence A.M. | Article in Book | | 2017 |
| ‘Peculiar conformations’ : architecture and identity in the great houses of Monaghan | Campbell, Myles | Article in Book | | 2017 |
| ‘Sinn Féinism’ and Nationalist politics in County Monaghan, 1914-1918 | Rankin, K. J.Toal, Gerard | Article in Book | | 2017 |
| ‘Suitable men of good repute’ and a ‘public fornicator’: the many priors of St John’s hospital in Dublin | O’ Keeffe, Grace | Article in Book | | 2023 |
| ‘The Pale at prayer’: lived religious experience in Anglo-Norman: Dublin’s two cathedrals | Sullivan, John William | Article in Book | | 2020 |