| Castle Roche and the de Verdons | Mc Keown, Micheál | Article in Book | NA | 2023 |
| Rathwire Manor 1180 to 1540 | Masterson, Rory | Article in Journal | | 2017 |
| The de Verdun family in England, Ireland and Wales, 1066-1316: a study | Hagger, Mark | Thesis | | |
| The fortunes of a Norman family : the de Verduns in England, Ireland, and Wales, 1066-1316 | Hagger, Mark | Monograph or Collective Volume | Four Courts | 2001 |
| Two De Verdon seals | Tempest, H. G. | Article in Journal | | 1948 |
| Uncovering an Anglo-Norman manor and deserted medieval village | Rheinisch, Siobhán | Article in Journal | | 2013 |