Alfonso Fadrique d'Aragona, Count of Malta illegitimate Son of King Frederick II of Sicily (1294–1338) Parents Sibilla Sormella Frederick III of Sicily Children John Fadrique Simona Fadrique Pedro I Fadrique Giacomo Fadrique d'Aragona, Count of Malta Bonifacio Fadrique 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 Constance of Sicily, Queen of Cyprus John, marquess of Randazzo Manfred of Athens Isabel de Aragón Partners Marulla of Verona