Peter IV of Ribagorza 1305 Barcelona - 4 Nov 1381 Pisa (1305–1380) Parents Blanche of Anjou James II of Aragon Children Jaume de Prades i de Foix Eleanor of Aragon, Queen of Cyprus Alfonso of Aragon the Elder Joan de Prades Siblings Blanca d'Aragó Maria of Aragon, Lady of Cameros Raimondo Berengario d'Aragona Constance of Aragon James of Aragon Isabella of Aragon Alfonso IV of Aragon Violante d'Aragona Juan de Aragón y Anjou Napoleó d'Aragó Jaume d’Aragó Partners Jeanne de Foix