| 6th Earl of Gloucester and Hertford Sir Gilbert de Clare | |
| B: | 2 Sep 1243 |
| Christchurch, Hampshire, England | |
| D: | 7 Dec 1295 |
| Monmouth Castle, Monmouth, ?, Wales | |
1272-1307
| Joan of Acre | |
| B: | 1272 |
| Acre, Outremer | |
| M: | 23 Apr 1290 |
| Westminster Abbey, Westminster, Middlesex, England | |
| D: | 8 Apr 1307 |
| 2nd Earl of Gloucester Sir Richard de Clare | |
| B: | 4 Aug 1222 |
| D: | Jul 1262 |
| Countess of Gloucester and Hertford Maud de Lacy | |
| M: | Abt [J] 25 Jan 1238 |
| D: | 29 Dec 1288 |
Abt 1180-1230
| 4th Earl of Hertford Gilbert de Clare | |
| B: | Abt 1180 |
| D: | 25 Oct 1230 |
| Penros, Brittany, France | |
1200-
| Isabel Marshal | |
| B: | 9 Oct 1200 |
| Pembroke Castle, Pembroke, Pembrokeshire, Wales | |
| M: | 9 Oct 1217 |
Abt 1155-1217
| 3rd Earl of Hertford Sir Richard de Clare | |
| B: | Abt 1155 |
| D: | Between 30 Oct 1217 and 28 Nov 1217 |