Alfonso V of Aragon

Alfonso inherited the Crown of Aragon in 1416 and immediately entangled himself in the messy succession war for Naples, fighting Louis III of Anjou and Joanna II. He lost the city in 1424. Eighteen years later, in 1442, he retook it and had himself crowned king. From Naples he backed Skanderbeg's resistance in the Balkans and kept ties with Stjepan Kosača, his Balkan vassal. He reached diplomatically toward the Ethiopian Empire and poured money into literature and construction, commissioning work on the Castel Nuovo. He died in 1458, a political actor and Renaissance patron in equal measure.