Something to go with my alternate Iberian Union timeline, in which the daughter of Juan, Prince of Asturias and Margaret of Austria lives and marries a surviving Miguel da Paz. Isabella of Aragon survives the birth of her son and produces further offspring in her marriage to Manuel I, whose collective legacies bring about the second Illustrious Generation in Portuguese history. My thanks to @BlueFlowwer for her helpful suggestions.
House of Trastámara
Maria I of Spain (1497 - ) m. 1514, Miguel I of Portugal (1498 - )
Issue:
1.) Infanta Isabella (1517 - )
2.) Infanta Margarita (1520 - 1525)
3.) Juan/João III of Hispania (1521 - )
4.) Infante Manuel (1525 - )
5.) Infanta Maria (1527 - )
6.) Infante Pedro (1530 - )
House of Aviz
Manuel I of Portugal (1469 - 1521) m. 1497, Isabella of Aragon (1470 - 1534)
Issue:
1.) Miguel I of Portugal (1498 - )
2.) Infanta Isabella (1500 - )
3.) Infante Ferdinand (1503 - )
4.) Infante Manuel (1505 - )
5.) Infanta Beatriz (1508 - )
House of Trastámara
Maria I of Spain (1497 - ) m. 1514, Miguel I of Portugal (1498 - )
Issue:
1.) Infanta Isabella (1517 - )
2.) Infanta Margarita (1520 - 1525)
3.) Juan/João III of Hispania (1521 - )
4.) Infante Manuel (1525 - )
5.) Infanta Maria (1527 - )
6.) Infante Pedro (1530 - )
House of Aviz
Manuel I of Portugal (1469 - 1521) m. 1497, Isabella of Aragon (1470 - 1534)
Issue:
1.) Miguel I of Portugal (1498 - )
2.) Infanta Isabella (1500 - )
3.) Infante Ferdinand (1503 - )
4.) Infante Manuel (1505 - )
5.) Infanta Beatriz (1508 - )
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