Afonso, Hereditary Prince of Portugal was the first son of king John III of Portugal and his queen, Catherine of Austria.[1] He was the Prince of Portugal but died in the same year he was born, in 1526.[2]
* 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