_William II of WARENNE _+
                                             | (1071 - 1138)          
                       _Reginald of WARENNE _|
                      | (1121 - 1179)        |
                      |                      |_Elizabeth of CAPET ____+
                      |                        (1085 - 1130)          
 _William of WARENNE _|
| (1140 - 1209)       |
|                     |                       ________________________
|                     |                      |                        
|                     |_Alice of WORMEGAY ___|
|                                            |
|                                            |________________________
|                                                                     
|
|--Beatrice of WARENNE 
|  (1175 - 1214)
|                                             ________________________
|                                            |                        
|                      ______________________|
|                     |                      |
|                     |                      |________________________
|                     |                                               
|_Beatrix PIERREPONT _|
  (1162 - 1203)       |
                      |                       ________________________
                      |                      |                        
                      |______________________|
                                             |
                                             |________________________