| Alexander Bicknor, archbishop of Dublin, 1317-49 | Gallagher, Niav | Thesis | | 1997 |
| Medieval mendicancy : the Franciscan experience in Ireland and Scotland in the nineteenth century | Gallagher, Niav | Article in Book | | 2004 |
| The Franciscans and the Scottish Wars of Independence : an Irish perspective | Gallagher, Niav | Article in Journal | | 2006 |
| The Irish Franciscan province : from foundation to the aftermath of the Bruce invasion | Gallagher, Niav | Article in Book | | 2010 |
| The mendicant order and the wars of Ireland, Scotland and Wales, 1230-1415 | Gallagher, Niav | Thesis | | 2005 |
| Two nations, one order : the Franciscans in Medieval Ireland | Gallagher, Niav | Article in Journal | | 2004 |