_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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|
|--Mathilde of CHÂTEAUDUN 
|  (.... - 1154)
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|                            ______________________|
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|                           |                                              
|_Helvise of MONDOUBLEAU ___|
                            |
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                            |______________________|
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