Afonso IV of Portugal, also known as Afonso IV the Brave, was the King of Portugal from 1325 until his death in 1357. He was the son of Afonso III of Portugal and Beatrice of Castile. His reign was marked by military campaigns against the Moors in North Africa and conflicts with the Kingdom of Castile. Afonso IV is known for his efforts to strengthen the Portuguese monarchy and expand its territories. He played a significant role in the Portuguese succession crisis and was involved in the early stages of the Portuguese Age of Discovery. His legacy includes the establishment of a more centralized government in Portugal.