| Dromaneen Castle, an O'Callaghan stronghold | Power, Denis | Article in Journal | | 1999 |
| Gravestone Inscriptions of Co. Cork XIX: Tracton Burial Ground | Henchion, Richard | Article in Journal | | 2015 |
| Life of Viscount Lismore's Banteer estate | Hajba, Anna Maria | Article in Journal | | 2018 |
| O'Callaghan Westropp papers | Gorman, Tommy | Article in Journal | | 1991 |
| The India Callaghans | Gabb, Alfred D. F. | Article in Journal | | 1995 |
| The O Callaghans of Banteer and Clonmeen in the eighteenth century | O Callaghan, Joseph F. | Article in Journal | | 2021 |
| The O'Callaghan family of County Cork : a history | O'Callaghan, Joseph F. | Monograph or Collective Volume | Irish Family Names | 2004 |
| The O'Callaghans of Kilcranathan, county Cork | O'Callaghan, Joseph F. | Article in Journal | | 1987 |