| Hugues de Grandmesnil
* 1032 † 1094 | ||
| ∞ | ||
| Adelize
† 1087 | ||
| Robert de Grandmesnil | ||
| Hugues de Grandmesnil | ||
| Pétronille de Grandmesnil | ||
| ∞ | ||
Robert de Beaumont
![[mer]](up.png)
† 1190 | ||
| Robert de Beaumont
† 1204 | ||
| Roger de Beaumont | ||
| William de Beaumont | ||
| Amicia de Beaumont | ||
| ∞ | 
| |
| Simon IV de Montfort
† 1188 | ||
| Simon V de Montfort
* ~1170 † 1218 | ||
|
| >> | |
| Guy de Montfort
† 1228 | ||
|
| ||
| Margaret de Beaumont | ||
| ∞ | ||
| Saer de Quincy | ||
| William de Grandmesnil | ||
| Hugh de Grandmesnil | ||
| Ivo de Grandmesnil | ||
| Aubrey de Grandmesnil | ||
| Adeline de Grandmesnil | ||
| ∞ | ||
| Roger d'Ivry | ||
| Hawise de Grandmesnil | ||
| Rohais de Grandmesnil | ||
| Matilda de Grandmesnil | ||
| Agnes de Grandmesnil | ||