_Rotrou I CHÂTEAUDUN _+
                                                   | (1031 - 1080)         
                             _Hugh IV CHÂTEAUDUN _|
                            |                      |
                            |                      |_Adelise of BELLÊME __
                            |                                              
 _Geoffrey III CHÂTEAUDUN _|
| (.... - 1145)             |
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|                           |_Agnes of FRÉTEVAL __|
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|                                                                          
|
|--William CHÂTEAUDUN 
|  
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|_Helvise of MONDOUBLEAU ___|
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