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Afonso, Prince of Portugal was the first son of king John III of Portugal and his queen, Catherine of Austria. He was the Prince of Portugal but died in the same year he was born, in 1526.
* also an infante of Castile and León, Aragon, Sicily and Naples,§ also an infante of Spain and an archduke of Austria,# also an infante of Spain,‡ also an imperial prince of Brazil,¶ also a prince of Saxe-Coburg and Gotha, Duke in Saxony,◙ also a prince of Braganza,¤ title removed in 1920 as their parents' marriage was deemed undynastic,ƒ claimant infante
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