_Manuel I AVIZ ___________+
                                               | (1469 - 1521)            
                       _John III AVIZ _________|
                      | (1502 - 1557)          |
                      |                        |_Maria of TRASTÁMARA ____+
                      |                          (1482 - 1516)            
 _John Manuel AVIZ ___|
| (1537 - 1553)       |
|                     |                         _Philip I HABSBURG _______+
|                     |                        | (1478 - 1506)            
|                     |_Catherine of HABSBURG _|
|                       (1506 - 1577)          |
|                                              |_Joanna I of TRASTÁMARA _+
|                                                (1479 - 1555)            
|
|--Sebastian AVIZ 
|  (1553 - 1578)
|                                               _Philip I HABSBURG _______+
|                                              | (1478 - 1506)            
|                      _Charles V HABSBURG ____|
|                     | (1499 - 1558) m 1526   |
|                     |                        |_Joanna I of TRASTÁMARA _+
|                     |                          (1479 - 1555)            
|_Joanna of HABSBURG _|
  (1535 - 1573)       |
                      |                         _Manuel I AVIZ ___________+
                      |                        | (1469 - 1521)            
                      |_Isabella of AVIZ ______|
                        (1503 - 1539) m 1526   |
                                               |_Maria of TRASTÁMARA ____+
                                                 (1482 - 1516)