_Rotrou I CHÂTEAUDUN _+
                                                          | (1031 - 1080)         
                                _Geoffroy II CHÂTEAUDUN _|
                               | (.... - 1100)            |
                               |                          |_Adelise of BELLÊME __
                               |                                                  
 _Routrou III CHÂTEAUDUN _____|
| (1080 - 1144)                |
|                              |                           _______________________
|                              |                          |                       
|                              |_Beatrix of RAMERUPT _____|
|                                                         |
|                                                         |_______________________
|                                                                                 
|
|--Felicia of CHÂTEAUDUN 
|  
|                                                          _William I NORMANDY ___+
|                                                         | (1028 - 1087) m 1051  
|                               _Henry I NORMANDY ________|
|                              | (1068 - 1135)            |
|                              |                          |_Matilda of FLANDERS __+
|                              |                            (1031 - 1083) m 1051  
|_Matilda FitzRoy of NORMANDY _|
  (1090 - 1120)                |
                               |                           _______________________
                               |                          |                       
                               |_Edith of UNKNOWN ________|
                                                          |
                                                          |_______________________