_Robert of BEAUMONT _+
                                                      | (1049 - 1118) m 1096
                              _Robert II of BEAUMONT _|
                             | (1104 - 1168) m 1120   |
                             |                        |_Elizabeth of CAPET _+
                             |                          (1085 - 1130) m 1096
 _Robert III of BEAUMONT ____|
| (1135 - 1190)              |
|                            |                         _____________________
|                            |                        |                     
|                            |_Amice of GAEL _________|
|                              (1108 - 1168) m 1120   |
|                                                     |_____________________
|                                                                           
|
|--Margaret of BEAUMONT 
|  (1156 - 1234)
|                                                      _____________________
|                                                     |                     
|                             ________________________|
|                            |                        |
|                            |                        |_____________________
|                            |                                              
|_Petronilla of GRANDMESNIL _|
  (1123 - 1212)              |
                             |                         _____________________
                             |                        |                     
                             |________________________|
                                                      |
                                                      |_____________________