______________________
                                             |                      
                        _Walter of BURGH ____|
                       |                     |
                       |                     |______________________
                       |                                            
 _Hubert of BURGH _____|
| (1170 - 1243) m 1210 |
|                      |                      ______________________
|                      |                     |                      
|                      |_Alice of UNKNOWN ___|
|                                            |
|                                            |______________________
|                                                                   
|
|--Hubert of BURGH 
|  
|                                             _Reginald of WARENNE _+
|                                            | (1121 - 1179)        
|                       _William of WARENNE _|
|                      | (1140 - 1209)       |
|                      |                     |_Alice of WORMEGAY ___
|                      |                                            
|_Beatrice of WARENNE _|
  (1175 - 1214) m 1210 |
                       |                      ______________________
                       |                     |                      
                       |_Beatrix PIERREPONT _|
                         (1162 - 1203)       |
                                             |______________________