| Father | Waleran DE BEAUMONT 1st Earl of Worcester (1104 - 1166) |
| Mother | Agnes DE MONTFORT Dame de Gournay-sur-Marne (1124 - 1181) |
| Sibling | Isabelle DE MEULAN Dame de Mayenne (1148 - 1220) |
| Sibling | Amaury I DE MEULAN-BEUMONT Seigneur de Gournay (1130 - 1207) |
| Sibling | Robert de BEAUMONT III, Count of Meulan (1142 - 1212) |
| Sibling | Waleran DE MEULAN (1144 - 1181) |
| Sibling | Amice DE MEULAN (1145 - 1197) |
| Sibling | Roger DE MEULAN Viscount of Evreux (1150 - 1207) |
| Sibling | Raoul DE MUELAN (1152 - 1165) |
| Sibling | Etienne DE MEULAN (1154 - ) |
| Sibling | Robert DE BEAUMONT Sir ( - 1207) |
| Sibling | Etienne DE BEAUMONT ( - ) |
| Sibling | Hawise DE BEAUMONT ( - ) |