_Henry VI HOHENSTAUFEN ____+
                                                      | (1165 - 1197)             
                          _Frederick II HOHENSTAUFEN _|
                         | (1194 - 1250)              |
                         |                            |_Constance of SICILY ______
                         |                              (1154 - 1198)             
 _Manfred HOHENSTAUFEN __|
| (1232 - 1265)          |
|                        |                             ___________________________
|                        |                            |                           
|                        |_Bianca Lancia of AGLIANO __|
|                          (1210 - 1246)              |
|                                                     |___________________________
|                                                                                 
|
|--Frederick HOHENSTAUFEN 
|  (.... - 1312)
|                                                      _Michael I KOMNENOSDOUKAS _+
|                                                     | (1170 - 1215)             
|                         _Michael II KOMNENOSDOUKAS _|
|                        | (.... - 1266)              |
|                        |                            |___________________________
|                        |                                                        
|_Helena KOMNENOSDOUKAS _|
  (1242 - 1271)          |
                         |                             _John PETRALIPHAS _________
                         |                            |                           
                         |_Theodora PETRALIPHAS ______|
                           (1210 - ....)              |
                                                      |___________________________