_William IV POITIERS _+
                                              | (0937 - 0993)        
                         _William V POITIERS _|
                        | (0969 - 1029)       |
                        |                     |_Emma of BLOIS _______+
                        |                       (0950 - 1003)        
 _William VII POITIERS _|
| (1023 - 1058)         |
|                       |                      _Otto-William IVREA __+
|                       |                     | (0955 - 1026)        
|                       |_Agnes of IVREA _____|
|                         (.... - 1068)       |
|                                             |_Ermentrude of ROUCY _+
|                                               (0958 - 1005)        
|
|--Clementia of POITIERS 
|  (1050 - 1141)
|                                              ______________________
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|                        _____________________|
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|                       |                     |______________________
|                       |                                            
|_Ermesinde of LONGWY __|
                        |
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                        |                     |                      
                        |_____________________|
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