| Robert de Beaumont
* ~1045 † 1118 | ||
| ∞ 1096 | ||
Isabelle de Vermandois
![[mer]](up.png)
* 1085 † 1131 | ||
| Emma de Beaumont
* 1102 | ||
| Waleran IV de Beaumont
* 1104 † 1166 | ||
| ∞ 1136 | ||
| Mathilde de Blois
† ~1140 | ||
| ∞ 1141 | ||
| Agnès de Montfort
* ~1123 † 1181 | ||
| Robert de Beaumont
* 1104 † 1168 | ||
| ∞ | ||
| Amice de Gael | ||
| Hawise de Beaumont | ||
| ∞ | ||
| William FitzRobert | ||
| Robert de Beaumont
† 1190 | ||
| ∞ | ||
| Pétronille de Grandmesnil
| ||
| 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 | ||
| Isabel de Beaumont | ||
| ∞ | ||
| Simon II de Senlis | ||
| ∞ | ||
| Gervase Paynel of Dudley | ||
| Margaret de Beaumont | ||
| ∞ | ||
| Raoul IV de Tosny
† 1162 | ||
| Hugh de Beaumont
* ~1106 | ||
| Adeline de Beaumont | ||
| ∞ | ||
| Hugues IV de Montfort-sur-Risle | ||
| ∞ | ||
| Richard de Granville
† 1147 | ||
| Aubree de Beaumont | ||
| ∞ | ||
| Hugues II de Châteauneuf-en-Thymerais | ||
| Maud de Beaumont | ||
| ∞ | ||
| William Lovel
* ~1102 | ||
| Isabel de Beaumont
† 1172 | ||
| & | ||
| Henry I of England
* ~1068 † 1135 | ||
| Isabel Hedwig of England
* ~1125 | ||
| Matilda FitzRoy
* ~1125 | ||
| ∞ ~1130 | ||
| Gilbert de Clare
* ~1100 † 1148 | ||
| Richard de Clare
* 1130 † 1176 | ||
| ∞ | ||
| Aoife of Leinster | ||
| Gilbert de Clare
† 1185 | ||
| Isabel de Clare
* 1172 † 1220 | ||
| & | ||
| William Marshal
* 1147 † 1219 | ||
| William Marshal
* 1190 † 1231 | ||
| Richard Marshal
* 1191 † 1234 | ||
| Matilda Marshal
* 1194 † 1248 | ||
| >> | ||
| Gilbert Marshal
* 1197 † 1241 | ||
| Walter Marshal
* ~1199 † 1245 | ||
| Isabel Marshal
* 1200 † 1240 | ||
| >> | ||
| Sibyl Marshal
* ~1201 † 1245 | ||
| Eva Marshal
* 1203 † 1246 | ||
| Anselm Marshal
* ~1208 † 1245 | ||
| Joan Marshal
* 1210 † 1234 | ||
| Baldwin de Clare | ||
| Agnes de Clare | ||
| Basilia de Clare | ||
| ∞ >1148 | ||
| Hervé de Montmorency
| ||