| A lacuna in Irish historiography: the Irish 'peregrini' from Eoin MacNeill to 'The Cambridge history of Ireland' and beyond | O'Hara, Alexander | Article in Journal | | 2023 |
| Carmen de Hibernia Insula : the earliest poem about Ireland | O'Hara, Alexander | Article in Book | | 2015 |
| Columbanus 'ad locum': The establishment of the monastic foundations | O'Hara, Alexander | Article in Journal | | 2015 |
| Columbanus and Jonas of Bobbio: new textual witness | O'Hara, Alexander
| Article in Journal | | 2012 |
| Death in the north : Norway's Irish saint | O'Hara, Alexander | Article in Book | | 2016 |
| The Vita Columbani in Merovingian Gaul | O'Hara, Alexander | Article in Journal | | 2009 |