| Sir John Fitzgeoffrey, of Essex | |
| D: | 23 Nov 1258 |
| Shere, Farnbridge, Surrey, England, United Kingdom | |
| Aveline De Clare |
| Aveline De Clare | |
| D: | 4 Jun 1225 |
| Earl of Essex Geoffrey Fitzpiers | |
| M: | 29 May 1205 |
| D: | 14 Oct 1213 |
| Earl of Gloucester Gilbert De Clare |
| Earl of Gloucester Gilbert De Clare | |
| B: | 1180 |
| D: | 25 Oct 1230 |
| Penrose, Brittany, France | |
| Lady Isabella Marshal |
| Lady Isabella Marshal | |
| B: | 9 Oct 1200 |
| Pembroke Castle, Wales, United Kingdom | |
| M: | 9 Oct 1217 |
| Tewkesbury Abbey, Tewkesbury, Gloucestershire, England, United Kingdom | |
| D: | 17 Jan 1240 |
| Berkhamsted Castle, Berkhamsted, Hertfordshire, England, United Kingdom | |
| Earl of Hertford Richard De Clare |
| Earl of Hertford Richard De Clare | |
| B: | 1153 |
| D: | 1217 |
| Countess of Gloucester Amicia | |
| D: | 1225 |
| Earl of Hertford Roger De Clare |
| Earl of Hertford Roger De Clare | |
| B: | 1115 |
| D: | 1173 |
| Maud Harcourt |
| Maud Harcourt | |
| B: | 1195 |
| D: | Yes, date unknown |
|
| Earl of Hereford Richard FitzGilbert De Clare | |
| B: | 1100 |
| D: | 15 Apr 1136 |