Isabella of Portugal (21 February 1397--17 December 1471) was a Portuguese "infanta" of the House of Aviz, the only surviving daughter of King John I of Portugal and his wife Philippa of Lancaster.
Isabella of Portugal (21 February 1397--17 December 1471) was duchess of Burgundy as the third wife of Duke Philip the Good. Born a a Portuguese "infanta" of the House of Aviz, the only surviving daughter of King John I of Portugal and his wife Philippa of Lancaster.