_Peter I BURGUNDY __________+
                                                     | (1320 - 1366)              
                           _John I AVIZ _____________|
                          | (1357 - 1433) m 1387     |
                          |                          |_Teresa LOURENÇO __________
                          |                                                       
 _Edward AVIZ ____________|
| (1391 - 1438)           |
|                         |                           _John of Gaunt PLANTAGENET _+
|                         |                          | (1339 - 1398)              
|                         |_Philippa of LANCASTER ___|
|                           (1360 - 1415) m 1387     |
|                                                    |_Blanche of PLANTAGENET ____+
|                                                      (1342 - 1368)              
|
|--Eleanor of AVIZ 
|  (1434 - 1467)
|                                                     _John I TRASTÁMARA ________+
|                                                    | (1358 - 1390)              
|                          _Ferdinand I TRASTÁMARA _|
|                         | (1380 - 1416)            |
|                         |                          |_Eleanor of BARCELONA ______+
|                         |                            (1357 - 1382)              
|_Eleonor of TRASTÁMARA _|
  (1402 - 1444)           |
                          |                           _Sancho Alfonso IVREA ______+
                          |                          | (1342 - 1373)              
                          |_Eleanor of IVREA ________|
                            (1374 - 1435)            |
                                                     |_Beatrice of BURGUNDY ______+
                                                       (1347 - 1381)