| Father | Roger 1st de Montgomery 1st Earl of Shrewsbury ( - ) |
| Mother | Mabel Talvas de Bellême d'Alencon Countess of Shrewsbury ( - 1079) |
| Sibling | Rissa de Montgomerie ( - 1090) |
| Sibling | Arnould Cimbricus de Montgomery Earl of Pembroke (1066 - 1125) |
| Sibling | Robert 2nd de Belleme Earl de Belleme (1034 - 1113) |
| Sibling | Ameria de Montgomery (1045 - ) |
| Sibling | Maude de Montgomery ( - 1107) |
| Sibling | Roger de Montgomery Lord of Lancaster (1065 - ) |
| Sibling | Lady Sybil de Montgomery (1066 - 1107) |
| Sibling | Earl Robert Bellême of Shrewsbury (1052 - 1131) |
| Sibling | Everard de Montgomery ( - ) |
| Sibling | Hugh de Montgomery ( - 1098) |
| Sibling | Matilda de Montgomery ( - 1085) |
| Sibling | Philip de Montgomery ( - 1099) |
| Sibling | Arnulph de Montgomery ( - 1102) |