| Robert de Belleme & Countess Agnes of Ponthieu | |
| Husband | Wife |
| Robert de Belleme | Countess Agnes of Ponthieu |
|
b: about 1039 Perche, France d: 1119 |
b: about 1066 France |
| Parents | |
| Roger de Montgomery (1022 - 1094) | Count Guy I of Ponthieu (~1036 - 1100) |
| Mabel Talvas de Alencon (~1026 - 1079) | Ada (<1006 - ) |
| Grand Parents | |
| Roger de Montgomery (~0985 - ) | |
| Josceline de Ponteaudemer (~0989 - ) | |
| William Talvas de Alencon II (~1000 - 1070) | |
| Helie de Bourgogne (1080 - ) | |
| Children (Family Detail) | |
| Duke Guillaume III D'Alencon | - b: about 1055 Alencon, Orne, France |