_Afonso IV BURGUNDY _+
                                            | (1290 - 1357)       
                       _Peter I BURGUNDY ___|
                      | (1320 - 1366)       |
                      |                     |_Beatrice of IVREA __+
                      |                       (1292 - 1359)       
 _John I AVIZ ________|
| (1357 - 1433)       |
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|                     |_Teresa LOURENÇO ___|
|                                           |
|                                           |_____________________
|                                                                 
|
|--Beatrice of AVIZ 
|  (1380 - 1439)
|                                            _____________________
|                                           |                     
|                      _____________________|
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|                     |                                           
|_Inés PIRES ________|
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                      |_____________________|
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