| Father | Male Gilbert De Clare, Earl |
| Born | 26 Aug 1243 | Christchurch, Hampshire, England |
| Died | 30 Nov 1295 | , Mammouth Castle, England |
| Buried | Tewksbury Abbey |
|
| Married | 1252 | |
| Divorced | Yes, date unknown | |
| Other Spouse | Joan "Of Acre", England | F16373 | |
| Married | Apr 1290 | Westminister Abb, Westminster, Middlesex, England |
| Father | Richard De Clare | F9007 Group Sheet | |
| Mother | Maud De Lacy | F9007 Group Sheet | |
| Mother | Female Alice Lusignan |
| Born | Abt 1223 | Of, Lusignan, Vienne, France |
| Died | 2 Feb 1291 | , Warren, Sussex, England |
| Buried | ||
| Other Spouse | John De Warenne, Earl of Surrey | F6446 | |
| Married | 1246 | Surry., England |
| Father | Hugh X De Lusignan | F6873 Group Sheet | |
| Mother | Isabella De Taillefer | F6873 Group Sheet | |
| Child 1 | Female Isabel De Clare |
| Born | 3 Mar 1262 | Of, Elmley, Worcestershire, England |
| Died | ||
| Buried | ||
| Spouse | Guy De Beauchamp, Earl of Warwick | F6455 | |
| Married | Bef 4 May 1297 | |