Mar 25 Inigo Lopez de Mendoza, Spanish marquis of Santillana/poet, dies Alfonso V of Aragon Jun 27 Alfonso V, King of Aragon/Sicily/Naples (Alfonso I), dies KingAlfonso V of Aragon Jun 29 Mapheus Vegius [Maffeo Vegio], Italian lawyer/humanist/poet, dies Aug 6 Callixtus III [Alfonso the Borja], Pope (1455-58), dies at 79 Dec 26 Arthur III, Duke of Brittany, dies at 65 1457 Famous Deaths by Year 1459