Family: William DE WARREN / Isabel VERMANDOIS (F2717)
 | William DE WARREN ( -1089) 
|
| Hugh MAGNUS ( -1101) |
 | Adelaide DE VERMANDOIS ( -1120)
|
| William DE WARREN (1086-1138)
|
| Isabel VERMANDOIS ( -1131)
|
| William DE WARRENE (1118-1148)  |
| Gundred DE WARREN ( -1153) |
| Ada DE WARREN ( -1178) |