_Ferdinand IV IVREA ____________+
                                               | (1285 - 1312)                  
                         _Alfonso XI BURGUNDY _|
                        | (1311 - 1350)        |
                        |                      |_Constanza Dinisez of BURGUNDY _+
                        |                        (1289 - 1313)                  
 _Henry II TRASTÁMARA _|
| (1333 - 1379)         |
|                       |                       ________________________________
|                       |                      |                                
|                       |_Eleanor of GUZMAN ___|
|                         (1310 - 1351)        |
|                                              |________________________________
|                                                                               
|
|--Joanna of TRASTÁMARA 
|  (1367 - 1374)
|                                               _Manuel IVREA __________________+
|                                              | (1234 - 1283)                  
|                        _John Manuel IVREA ___|
|                       | (1282 - 1348)        |
|                       |                      |_Beatrice of SAVOY _____________+
|                       |                        (1250 - 1292)                  
|_Juana Manuel IVREA ___|
  (1339 - 1381)         |
                        |                       _Ferdinand of LA CERDA _________+
                        |                      | (1275 - 1322)                  
                        |_Blanca of LA CERDA __|
                                               |
                                               |_Juana Núñez of LARA _________
                                                 (1286 - 1351)