Isabella of Urgell, Duchess of Coimbra Portuguese duchess (1409–1469) Parents Isabella of Aragon James II, Count of Urgell Children John, Prince of Antioch James of Coimbra Infanta Beatrice of Coimbra Peter, Constable of Portugal Infanta Philippa of Coimbra Isabella of Coimbra Siblings Elionor d'Urgell Joana d'Urgell Partners Peter, Duke of Coimbra