John III of Portugal (born 1502)

John III, nicknamed The Pious, was the King of Portugal and the Algarve from 1521 until he died in 1557. He was the son of King Manuel I and Maria of Aragon, the third daughter of the Catholic Monarchs of Spain, Ferdinand II of Aragon and Isabella I of Castile. John succeeded his father in 1521 at the age of nineteen.