_Berengar II IVREA _________+
                                              | (0900 - 0966)              
                        _Adalbert II IVREA ___|
                       | (0932 - 0971)        |
                       |                      |_Willa of BOSONID __________+
                       |                        (0911 - 0970)              
 _Otto-William IVREA __|
| (0955 - 1026)        |
|                      |                       _Lambert of UNKNOWN ________
|                      |                      |                            
|                      |_Gerberga of MÂCON __|
|                                             |
|                                             |_Adelaide-Werra of BOSONID _+
|                                                                          
|
|--Reginald I IVREA 
|  (0986 - 1057)
|                                              ____________________________
|                                             |                            
|                       _Renaud of ROUCY _____|
|                      | (0920 - 0967)        |
|                      |                      |____________________________
|                      |                                                   
|_Ermentrude of ROUCY _|
  (0958 - 1005)        |
                       |                       _Gilbert II REGINAR ________+
                       |                      | (0890 - 0939)              
                       |_Alberade of REGINAR _|
                                              |
                                              |____________________________