_Albert Azzo I OBERTENGHI _____+
                                                   | (0970 - 1029)                 
                       _Albert Azzo II OBERTENGHI _|
                      | (0997 - 1097) m 1035       |
                      |                            |_Adela of MILAN _______________
                      |                              (0975 - 1012)                 
 _Welf IV WELF _______|
| (1035 - 1101)       |
|                     |                             _Welf II WELF _________________+
|                     |                            | (0960 - 1029)                 
|                     |_Kunigunde of WELF _________|
|                       (1020 - 1054) m 1035       |
|                                                  |_Imiza of ARDENNES-LUXEMBOURG _+
|                                                    (0990 - 1055)                 
|
|--Henry IX WELF 
|  (1075 - 1126)
|                                                   _Arnulf II FLANDERS ___________+
|                                                  | (0961 - 0987)                 
|                      _Baldwin IV FLANDERS _______|
|                     | (0980 - 1035)              |
|                     |                            |_Rozala of IVREA ______________+
|                     |                              (.... - 1002)                 
|_Judith of FLANDERS _|
  (1030 - 1093)       |
                      |                             _Richard II NORMANDY __________+
                      |                            | (0980 - 1026)                 
                      |_Eleanor of NORMANDY _______|
                        (1010 - 1071)              |
                                                   |_Judith of BRITTANY ___________+