Individual Details
Sybil de Montgomery
( - )
Families
| Spouse | Robert FitzHamon (1040 - 1107) |
| Child | Living |
| Father | Roger de Montgomery, 1st Earl of Shrewsbury ( - 1094) |
| Mother | Mabel de Bellême (1030 - 1079) |
| Sibling | Robert de Bellême, 3rd Earl of Shrewsbury (1056 - 1130) |
| Sibling | Roger "The Poitevan" la Marche (1065 - 1140) |
| Sibling | Arnulph de Montgomery (1066 - 1118) |
| Sibling | Matilda de Montgomery ( - ) |