_Peter I BURGUNDY ___________________+
                                                  | (1320 - 1366)                       
                          _John I AVIZ ___________|
                         | (1357 - 1433) m 1387   |
                         |                        |_Teresa LOURENÇO ___________________
                         |                                                              
 _Peter AVIZ ____________|
| (1392 - 1449) m 1429   |
|                        |                         _John of Gaunt PLANTAGENET __________+
|                        |                        | (1339 - 1398)                       
|                        |_Philippa of LANCASTER _|
|                          (1360 - 1415) m 1387   |
|                                                 |_Blanche of PLANTAGENET _____________+
|                                                   (1342 - 1368)                       
|
|--Catherine of AVIZ 
|  (1448 - 1462)
|                                                  _Peter II BARCELONA _________________+
|                                                 | (1340 - 1408)                       
|                         _James II BARCELONA ____|
|                        | (1380 - 1433)          |
|                        |                        |_Margaret of PALAIOLOGOS-MONTFERRAT _+
|                        |                          (1364 - 1420)                       
|_Isabella of BARCELONA _|
  (1408 - 1459) m 1429   |
                         |                         _Peter IV BARCELONA _________________+
                         |                        | (1319 - 1386)                       
                         |_Isabella of BARCELONA _|
                           (1376 - 1424)          |
                                                  |_Sibila of FORTIÀ __________________
                                                    (.... - 1406)