| b 10 Mar 1262, Of, Elmley, Worcestershire, England | Richard De Clare, [Earl] | > | Gilbert De Clare | Amice Fitzrobert, Countess | > |
| Richard De Clare | b 1182 | William Marshall, [Earl] | > | |
| | b 04 Aug 1222 | Isabel Marshall | Isabel De Clare, [Countess] | > | |
| Gilbert De Clare, Earl | d 15 Jul 1262 | b 1203 | Roger De Lacie | > |
| |b 02 Sep 1243 | | | John De_Lacy | Maud (Matilda) De Clare | > |
| |d 07 Dec 1295 | Maud De_Lacy | b 1192 | Robert De Quincy | > |
| | | b 1223 | Margaret De Quincy | Hawise De Meschines, [Countess] | > |
| Isabel De Clare | d 10 Mar 1288 | b 1208 | ||
| |Guy De Beauchamp, Earl of Warwick | Hugh Lusignan | |m 11 May 1297 | Hugh X De Lusignan | b 1157 |
| | | |b 1183 | Mathilde De Angouleme | ||
| Alice Lusignan | d 1249 | b 1159 | Guillaume (William) IV Taillefer, Count | > |
| b 1224 | | | Aymer De Taillefer | Margaret Turrenne, Countess | > |
| d 09 Feb 1291 | Isabella De Taillefer | b 1160 | Pierre Emperor Of Constantinople, Prince of France | > |
| b 1188 | Alix De Courtenay, Countess | Isabelle Elizabeth De Courtenay | > | |
| d 31 May 1246 | b 1160 | |||