_Theobald III BLOIS _+
                                             | (1012 - 1089)       
                        _Hugh BLOIS _________|
                       | (1074 - 1130)       |
                       |                     |_Adele of VALOIS ____+
                       |                                           
 _Odo of BLOIS ________|
| (1123 - 1187)        |
|                      |                      _Stephen I IVREA ____+
|                      |                     | (1065 - 1102)       
|                      |_Isabella of IVREA __|
|                                            |
|                                            |_Beatrice of METZ ___+
|                                              (.... - 1116)       
|
|--William of BLOIS 
|  (1160 - 1209)
|                                             _____________________
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|                       _____________________|
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|                      |                                           
|_Sibylle of LA FERTE _|
                       |
                       |                      _____________________
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                       |_____________________|
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