_William IV POITIERS _______+
                                                    | (0937 - 0993)              
                           _William V POITIERS _____|
                          | (0969 - 1029)           |
                          |                         |_Emma of BLOIS _____________+
                          |                           (0950 - 1003)              
 _William VIII POITIERS __|
| (1025 - 1086)           |
|                         |                          _Otto-William IVREA ________+
|                         |                         | (0955 - 1026)              
|                         |_Agnes of IVREA _________|
|                           (.... - 1068)           |
|                                                   |_Ermentrude of ROUCY _______+
|                                                     (0958 - 1005)              
|
|--William IX POITIERS 
|  (1071 - 1126)
|                                                    _Robert II CAPET ___________+
|                                                   | (0972 - 1031)              
|                          _Robert I BURGUNDY ______|
|                         | (1011 - 1075)           |
|                         |                         |_Constance of ARLES ________+
|                         |                           (0986 - 1032)              
|_Hildegarde of BURGUNDY _|
  (1056 - 1104)           |
                          |                          _Fulk III INGELGER _________+
                          |                         | (0970 - 1040) m 1005       
                          |_Ermengarde of INGELGER _|
                            (1017 - 1075)           |
                                                    |_Hildegard of ARDENNES-BAR _+
                                                      (.... - 1046) m 1005