_Ferdinand II IVREA _________+
                                                    | (1137 - 1187) m 1165        
                              _Alfonso IX IVREA ____|
                             | (1171 - 1230)        |
                             |                      |_Urraca of BURGUNDY _________+
                             |                        (1148 - 1211) m 1165        
 _Ferdinand III IVREA _______|
| (1199 - 1252) m 1219       |
|                            |                       _Alfonso VIII IVREA _________+
|                            |                      | (1155 - 1214)               
|                            |_Berengaria of IVREA _|
|                              (1179 - 1246)        |
|                                                   |_Eleanor of PLANTAGENET _____+
|                                                     (1161 - 1214)               
|
|--Sancho IVREA 
|  (1233 - 1261)
|                                                    _Frederick III HOHENSTAUFEN _+
|                                                   | (1122 - 1190)               
|                             _Philip HOHENSTAUFEN _|
|                            | (1177 - 1208)        |
|                            |                      |_Beatrice I of IVREA ________+
|                            |                        (1143 - 1184)               
|_Elisabeth of HOHENSTAUFEN _|
  (1204 - 1235) m 1219       |
                             |                       _Isaac II ANGELOS ___________+
                             |                      | (1156 - 1203)               
                             |_Irene ANGELOS _______|
                               (1181 - 1181)        |
                                                    |_Irene of UNKNOWN ___________