| 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 | |
| Countess of Gloucester Amicia | |
| D: | 1225 |
| Earl of Hertford Richard De Clare |
| Earl of Hertford Richard De Clare | |
| B: | 1153 |
| D: | 1217 |
| Earl of Gloucester William Fitzrobert De Caen | |
| M: | 1150 |
| D: | 23 Nov 1183 |
|
| Earl of Leicester Robert Beaumont, I |
| Earl of Leicester Robert Beaumont, I | |
| B: | 1050 |
| D: | 5 Jun 1118 |
| Hugh De Montfort, IV, of Montfort-sur-Risle | |
| D: | 1124 |
| Richard De Granville, of Bideford | |
| D: | 1147 |
| Emma Beaumont |
| Emma Beaumont | |
| B: | 1102 |
| D: | Yes, date unknown |
| Countess of Pembroke Isabel Fitzgilbert De Clare | |
| B: | 1174 |
| D: | 1220 |
| Earl of Pembroke, Sir William Marshal |
| Earl of Pembroke, Sir William Marshal | |
| B: | 1146 |
| M: | Aug 1189 |
| D: | 14 May 1219 |
| Caversham, Oxfordshire, England, United Kingdom | |
| Earl of Pembroke Richard FitzGilbert De Clare | |
| B: | 1130 |
| D: | 20 Apr 1176 |
| Dublin, Dublin, Leinster, Ireland | |
| Countess of Ireland Eve Noigillach | |
| M: | 26 Aug 1171 |
| Waterford, Ireland | |
| Isabel Beaumont |
| Isabel Beaumont | |
| B: | 1104 |
| D: | Yes, date unknown |
| Earl of Pembroke Gilbert FitzGilbert De Clare | |
| B: | 1115 |
| D: | 6 Jan 1147 |
| King of England Henry, I |
| King of England Henry, I | |
| B: | Sep 1068 |
| Selby, Yorkshire, England, United Kingdom | |
| D: | 1 Dec 1135 |
| Staint Derisle Fermont, Angers, , England, United Kingdom | |
| Margaret Beaumont |
| Margaret Beaumont | |
| B: | 1156 |
| D: | 12 Jan 1236 |
| Saher De Quincy, IV |
| Saher De Quincy, IV | |
| B: | 1155 |
| Winchester, Hampshire, England, United Kingdom | |
| D: | 3 Nov 1219 |
| Damietta, , Dumyat, Egypt | |
| Earl of Leicester Robert Beaumont, III |
| Earl of Leicester Robert Beaumont, III | |
| B: | 1135 |
| D: | 1190 |
| , , , Greece | |
| Petronilla Grentesmaisnill | |
| M: | 1155 |
| Duke of Leicester Robert Beaumont, II |
| Duke of Leicester Robert Beaumont, II | |
| B: | 1104 |
| D: | 1168 |
| Waleran Beaumont, IV |
| Waleran Beaumont, IV | |
| B: | 1104 |
| D: | Yes, date unknown |
| Earl of Bedford Hugh Beaumont |
| Earl of Bedford Hugh Beaumont | |
| B: | 1106 |
| D: | Yes, date unknown |
| Isabel Capet |
| Isabel Capet | |
| B: | 1080 |
| M: | 1096 |
| D: | 17 Feb 1131 |