| 'Bethlehem' : the Dillons and the Poor Clare convent at Ballinacliffey, Co. Westmeath | Cunningham, Bernadette | Article in Journal | | 2013 |
| Cnoc Diolun : a genealogical survey of the Dillon family in Ireland | Dillon, Gerard | Article in Journal | | 1955 |
| Conversion and family identity in eighteenth-century Europe : the Dillons of Costello-Gallen | Ó Conaill, Colm James | Article in Book | | 2005 |
| Dillon papers | Ainsworth, John F.MacLysaght, Edward | Article in Journal | | 1958 |
| Dillons of Ballaghaderreen | Groarke, Alan | Article in Journal | | 1994 |
| Inside Ireland | Dillon, Eilís | Monograph or Collective Volume | Hodder and Stoughton | 1982 |
| Politics, religion and family identity : The exile and return of the Dillon family from the Williamite Conquest to the French Revolution | Ó Conaill, Colm James | Article in Book | | 2007 |
| The Clonbrock photographic collection : Anglo-Irish identity and the Dillon family of Galway | Kavanagh, Úna | Article in Journal | | 2019 |
| The Dillon peerages | Dillon, Gerard | Article in Journal | | 1958 |
| The Dillon regimental colour | Joye, Lar | Article in Journal | | 2020 |
| The Dillons of Carlow | Davidson-Houston, W. E. C. | Article in Journal | | 1962 |
| The Dillons of Lismullen - a Meath landed family | French, Noel E. | Article in Journal | | 2014 |
| The Dillons, lords of Kilkenny west : part one-four | Cox, Liam, 1908-2003 | Article in Journal | | 2003 |
| The Dillons: a Mayo family in history | Dillon, John M. | Article in Book | | 2014 |
| The Irish Transport & General Workers’ Union in Mayo, 1918-1930 | Devine, Francis | Article in Journal | | 2019 |
| The noble line of the Dillons, Irish swordsmen of France | Holohan, Renagh | Article in Journal | | 1989 |
| Westmeath bardic poetry | Ó Háinle, Cathal G. | Article in Book | Geography Publications | 2022 |