João III of Portugal was the King of Portugal from 1521 to 1557. He was born on June 7, 1502, and was the son of Manuel I of Portugal and Maria of Aragon. His reign is noted for the expansion of the Portuguese Empire, particularly in India and Brazil, as well as for the establishment of the Inquisition in Portugal. During his rule, João III focused on strengthening the monarchy and promoting trade. He also faced challenges, including conflicts with Spain and issues related to the administration of overseas territories. His reign marked a significant period in the history of Portugal.