married first Germaine of Foix (her third marriage) and secondly Mencía de Mendoza Julia (1492 – 10 March 1542), who married John George of Montferrat Alfonso (1499–1515) Isabella (1500–1550) Caesar (1501–1501/1503) See also Book of hours of Frederick of Aragon References Sources 1452 births 1504 deaths 15th-century monarchs of Naples 16th-century monarchs of Naples Frederick 4 House of Trastámara