_Rotrou I CHÂTEAUDUN _+
                                                      | (1031 - 1080)         
                            _Geoffroy II CHÂTEAUDUN _|
                           | (.... - 1100)            |
                           |                          |_Adelise of BELLÊME __
                           |                                                  
 _Routrou III CHÂTEAUDUN _|
| (1080 - 1144)            |
|                          |                           _______________________
|                          |                          |                       
|                          |_Beatrix of RAMERUPT _____|
|                                                     |
|                                                     |_______________________
|                                                                             
|
|--Rotrou IV CHÂTEAUDUN 
|  (1135 - 1191)
|                                                      _______________________
|                                                     |                       
|                           __________________________|
|                          |                          |
|                          |                          |_______________________
|                          |                                                  
|_Hawise of SALISBURY _____|
                           |
                           |                           _______________________
                           |                          |                       
                           |__________________________|
                                                      |
                                                      |_______________________