_Geoffrey II CHÂTEAUDUN _+
                                               | (.... - 1040)            
                        _Rotrou I CHÂTEAUDUN _|
                       | (1031 - 1080)         |
                       |                       |_Elizabeth of CORBON _____
                       |                         (.... - 1079)            
 _Hugh IV CHÂTEAUDUN _|
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|                      |_Adelise of BELLÊME __|
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|--Mathilde of CHÂTEAUDUN 
|  (.... - 1139)
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|_Agnes of FRÉTEVAL __|
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