Sir Gerald de Prendergast, of Beauvoir
- 1251(Notes: You may have to scroll down or right to see chart.)
| Maud de Clare | |
| B: | Abt 1276 |
| D: | Abt 1326 |
| Robert de Clifford, 1st Baron de Clifford | |
| B: | Abt 1274 |
| Herefordshire, England | |
| D: | 24 Jun 1314 |
| Gilbert de Clare, Lord of Thomond | |
| B: | 03 Feb 1280/81 |
| D: | Abt 1308 |
| Richard de Clare, Steward of Forest of Essex | |
| B: | Aft 1281 |
| D: | 10 May 1318 |
| Corofin, County Clare, Ireland | |
| Margaret de Clare, Baroness Badlesmere | |
| B: | Abt Apr 1287 |
| Thomond, Ireland | |
| D: | Between 22 Oct 1333 and 03 Jan 1333/34 |
| Juliana FitzGerald, Lady of Thomond | |
| B: | Abt 1263 |
| Dublin, Ireland | |
| D: | 24 Sep 1300 |
| Thomas de Clare, Lord of Thomond | |
| B: | Abt 1245 |
| Tonbridge, Kent, England | |
| D: | 29 Aug 1287 |
| Maud de Prendergast, Lady of Offaly | |
| B: | 17 Mar 1241/42 |
| D: | Bef 1273 |
| Maurice FitzGerald, 3rd Lord of Offaly | |
| B: | 1238 |
| Wexford, Ireland | |
| D: | Bef 10 Nov 1286 |
| Ross, Wexford, Ireland | |
| Gerald de Prendergast, of Beauvoir | |
| D: | 1251 |