_Adalbert II IVREA _______________+
                                             | (0932 - 0971)                    
                       _Otto-William IVREA __|
                      | (0955 - 1026)        |
                      |                      |_Gerberga of MÂCON ______________+
                      |                                                         
 _Reginald I IVREA ___|
| (0986 - 1057)       |
|                     |                       _Renaud of ROUCY _________________
|                     |                      | (0920 - 0967)                    
|                     |_Ermentrude of ROUCY _|
|                       (0958 - 1005)        |
|                                            |_Alberade of REGINAR _____________+
|                                                                               
|
|--William I IVREA 
|  (1020 - 1087)
|                                             _Richard I NORMANDY ______________+
|                                            | (0932 - 0996)                    
|                      _Richard II NORMANDY _|
|                     | (0980 - 1026)        |
|                     |                      |_Gunnor of UNKNOWN _______________
|                     |                        (0936 - 1030)                    
|_Alice of NORMANDY __|
                      |
                      |                       _Conan I RENNES __________________+
                      |                      | (.... - 0992)                    
                      |_Judith of BRITTANY __|
                                             |
                                             |_Ermengarde-Gerberga of INGELGER _+
                                               (0956 - 1024)