_Frederick II HOHENSTAUFEN _+
                                                     | (1090 - 1147)              
                        _Frederick III HOHENSTAUFEN _|
                       | (1122 - 1190)               |
                       |                             |_Judith of WELF ____________+
                       |                               (1100 - 1130)              
 _Philip HOHENSTAUFEN _|
| (1177 - 1208)        |
|                      |                              _Reginald III IVREA ________+
|                      |                             | (1087 - 1148)              
|                      |_Beatrice I of IVREA ________|
|                        (1143 - 1184)               |
|                                                    |_Agatha of METZ ____________+
|                                                      (1120 - 1147)              
|
|--Kunigunde of HOHENSTAUFEN 
|  (1201 - 1248)
|                                                     _Andronikos ANGELOS ________+
|                                                    | (1133 - ....)              
|                       _Isaac II ANGELOS ___________|
|                      | (1156 - 1203)               |
|                      |                             |_Euphrosyne KASTAMONITISSA _
|                      |                                                          
|_Irene ANGELOS _______|
  (1181 - 1181)        |
                       |                              ____________________________
                       |                             |                            
                       |_Irene of UNKNOWN ___________|
                                                     |
                                                     |____________________________