| A Gallican interlude in Ireland : the Irish remonstrance of 1661 | Brennan, James | Article in Journal | | 1957 |
| Bishop Ledrede and the trial of Alice Kyteler : a case study in witchcraft and heresy in medieval Kilkenny | Brennan, James | Article in Book | | 2000 |
| Dunamaggan settlement history 1650-1800 | Brennan, James | Article in Journal | | 1992 |
| Easter Rising 1916 - the Mendicity Institution area | Brennan, James J. | Article in Journal | | 1966 |
| Monastic sites in ancient Ossory : an archaeological view | Brennan, James | Article in Journal | | 1995 |
| Peter Walsh and the Confederation of Kilkenny | Brennan, James | Article in Journal | | 1990 |
| Richard Ledrede, bishop of Ossory - towards a new assessment | Brennan, James | Article in Journal | | 1998 |
| Richard Ledrede, Bishop of Ossory 1317-1360 - towards a re-assessment | Brennan, James, Fr. | Article in Book | | 2009 |
| Richard Ledrede, bishop of Ossory, 1317-60: a study in change and conflict | Brennan, James | Thesis | | 2001 |
| St Dympnas Miscellanea | Brennan, James | Article in Journal | | 2024 |
| The cult of St. Ciaran in Cornwall and beyond | Brennan, James | Article in Journal | | 1997 |
| The Irish settlers of southern New Hampshire | Brennan, James F. | Article in Journal | | 1910 |