Sanciolo d'Aragona Illegitimate son of Frederick III of Sicily (d. 1334) Parents Sibilla Sormella Frederick III of Sicily Children Vinciguerra d'Aragona Siblings Elisabeth of Sicily, Duchess of Bavaria John, marquess of Randazzo Manfred of Athens Alfonso Fadrique d'Aragona, Count of Malta Peter II of Sicily Margaret of Sicily Roland of Sicily William II of Athens Isabel de Aragón Constance of Sicily, Queen of Cyprus Partners Malcalda Palizzi, Heiress of Cammarata