_Frederick I HOHENSTAUFEN _+
                                                           | (1050 - 1105)             
                               _Frederick II HOHENSTAUFEN _|
                              | (1090 - 1147)              |
                              |                            |_Agnes of SALIAN __________+
                              |                              (1072 - 1143)             
 _Frederick III HOHENSTAUFEN _|
| (1122 - 1190)               |
|                             |                             _Henry IX WELF ____________+
|                             |                            | (1075 - 1126)             
|                             |_Judith of WELF ____________|
|                               (1100 - 1130)              |
|                                                          |_Wulfhilde of BILLUNG _____+
|                                                            (1072 - 1126)             
|
|--Otto I HOHENSTAUFEN 
|  (1169 - 1199)
|                                                           _Stephen I IVREA __________+
|                                                          | (1065 - 1102)             
|                              _Reginald III IVREA ________|
|                             | (1087 - 1148)              |
|                             |                            |_Beatrice of METZ _________+
|                             |                              (.... - 1116)             
|_Beatrice I of IVREA ________|
  (1143 - 1184)               |
                              |                             _Simon I METZ _____________+
                              |                            | (1076 - 1138)             
                              |_Agatha of METZ ____________|
                                (1120 - 1147)              |
                                                           |_Adelaide of REGINAR ______+
                                                             (.... - 1158)