_Ferdinand AVIZ ___________+
                                              | (1433 - 1470) m 1447      
                       _Manuel I AVIZ ________|
                      | (1469 - 1521)         |
                      |                       |_Beatrice of AVIZ _________+
                      |                         (1430 - 1506) m 1447      
 _Luís AVIZ _________|
| (1505 - 1555)       |
|                     |                        _Ferdinand II TRASTÁMARA _+
|                     |                       | (1451 - 1515) m 1469      
|                     |_Maria of TRASTÁMARA _|
|                       (1482 - 1516)         |
|                                             |_Isabella I TRASTÁMARA ___+
|                                               (1451 - 1504) m 1469      
|
|--António AVIZ 
|  (1531 - 1595)
|                                              ___________________________
|                                             |                           
|                      _______________________|
|                     |                       |
|                     |                       |___________________________
|                     |                                                   
|_Vialonte GOMES _____|
                      |
                      |                        ___________________________
                      |                       |                           
                      |_______________________|
                                              |
                                              |___________________________