Jaume Pere d'Aragó i Nicolau illegitimate son of Peter III the Great, King of Aragon and Sicily (1258–1308) Parents Maria Nicolau Peter III of Aragon Children Constanza Pérez de Aragón Siblings Pietro d'Aragona Alfonso III of Aragon Yolande of Aragon, Duchess of Calabria Frederick III of Sicily Elizabeth of Aragon James II of Aragon Teresa de Aragón Sanç d'Aragó Partners Sancha Fernández Díaz