John, marquess of Randazzo Duke of Athens, regent of the kingdom of Sicily (1317–1348) Parents Eleanor of Anjou, Queen of Sicily Frederick III of Sicily Children Frederick I, Duke of Athens and Neopatria Eleonora d'Aragona Siblings Elisabeth of Sicily, Duchess of Bavaria William II of Athens Roland of Sicily Sanciolo d'Aragona Margaret of Sicily Peter II of Sicily Alfonso Fadrique d'Aragona, Count of Malta Manfred of Athens Constance of Sicily, Queen of Cyprus Isabel de Aragón