William fitz Osbern, 1st Earl of Hereford
- 1071(Notes: You may have to scroll down or right to see chart.)
| Amicia de Montfort | |
| D: | Aft 31 Aug 1168 |
| Robert de Beaumont, 2nd Earl of Leicester | |
| B: | 1104 |
| D: | 05 Apr 1168 |
| Raoul de Montfort, Seigneur de Montfort et Gael | |
| D: | Aft 1118 |
| Unknown |
| Raoul de Montfort, Seigneur de Montfort et Gael | |
| D: | Abt 1097 |
|
| William fitz Osbern, 1st Earl of Hereford | |
| D: | 20 Feb 1070/71 |
| Flanders, Belgium | |
| Unknown |