_Walter I of BRIENNE ___+
                                                | (1020 - 1089)          
                          _Erard I of BRIENNE __|
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                         |                      |_Eustachie of TONNERRE _
                         |                                               
 _Gautier II of BRIENNE _|
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|                        |_Alix of ROUCY _______|
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|--Érard II of BRIENNE 
|  (.... - 1190)
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|                         _Andrew of BAUDEMONT _|
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|_Adèle of BAUDEMONT ___|
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                         |_Agnes of BRAINE _____|
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