Alfonso V of Aragon was a king who ruled from 1416 to 1458. He was known as "Alfonso the Magnanimous" and was a member of the House of Trastámara. His reign is notable for the expansion of the Crown of Aragon, particularly through his conquests in Sicily and Naples. Alfonso was also a patron of the arts and culture, promoting literature and architecture during his time. He played a significant role in the political landscape of Mediterranean Europe, navigating complex alliances and conflicts. His legacy includes contributions to both governance and cultural development.