Joan of Portugal

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Portuguese royalty
House of Aviz

John I
Children
   Infante Duarte (future Edward I)
   Infante Pedro, Duke of Coimbra
   Henry the Navigator (Infante Henrique, Duke of Viseu)
   Infanta Isabel, Duchess of Burgundy
   Infante João
   Infante Fernando, the Saint Prince
   Afonso, Duke of Braganza (illegitimate)
   Beatriz, Countess of Arundel (illegitimate)
Grandchildren include
   Infanta Isabel of Coimbra, Queen of Portugal
Edward
Children
   Afonso, Prince of Portugal (future Afonso V)
   Infante Fernando, Duke of Viseu
   Infanta Leonor, Holy Roman Empress
   Infanta Catarina
   Infanta Joana, Queen of Castile
Grandchildren include
   Infante Manuel, Duke of Beja (future Manuel I)
   Infanta Leonor of Viseu, Queen of Portugal
Afonso V
Children include
   João, Prince of Portugal
   Blessed Joana, Princess of Portugal
   João, Prince of Portugal (future John II)
John II
   Afonso, Prince of Portugal
   Jorge, Duke of Coimbra (illegitimate)
Manuel I
Children include
   Miguel da Paz, Prince of Portugal and of Asturias
   João, Prince of Portugal (future John III)
   Infanta Isabel, Holy Roman Empress
   Infanta Beatriz, Duchess of Savoy
   Infante Luís, Duke of Beja
   Infante Fernando, Duke of Guarda and Trancoso
   Infante Cardinal Afonso
   Infante Cardinal Henrique (future Henry I)
   Infante Duarte, Duke of Guimarães
   Infanta Maria
Grandchildren include
   Philip II of Spain (future Philip I of Portugal)
   António, Prior of Crato (future Anthony I) (illegitimate)
   Infanta Maria of Guimarães, Duchess of Parma and Piacenza
   Infanta Catarina of Guimarães, Duchess of Braganza
Great-Grandchildren include
   Teodósio II, Duke of Braganza
   Rannuccio Farnense of Parma
Great-Great-Grandchildren include
   John II, Duke of Braganza (future John IV of Portugal)
John III
Children include
   Maria Manuela, Princess of Portugal and of Asturias
   João, Prince of Portugal
Grandchildren include
   Sebastião, Prince of Portugal (future Sebastian I)
   Carlos, Prince of Asturias
Sebastian
Henry
Anthony (disputed king)
For the Portuguese princess, daughter of Afonso V of Portugal, and commonly known as Princess Saint Joan see: Joan of Portugal (nun)

Joan of Portugal (14391475, Portuguese: Joana, pron. IPA: [ʒu'ɐnɐ]) was a Portuguese Princess daughter of King Edward of Portugal and his wife Eleanor of Aragon. She was born in the Quinta do Monte Olivete, Almada on March 31, 1439, six months after the death of his father.

In 1455 she married Henry IV of Castile and six years later had a daughter named also Joan, called La Beltraneja because of rumours that she was in fact daughter of Don Beltrán de la Cueva. Henry sent Joan to live in Coca at the castle of Henry's supporter, bishop Fonseca. She fell in love with Bishop Fonseca's nephew and was expecting his child. Enrique declared their marriage not and never legal. Joan wore dresses that were low cut and her behavior was considered scandalous. She later went to the covent of San Fransico in Segovia. She died in Madrid on June 13, 1475.

Preceded by
Isabel of Portugal
Queen Consort of Castile and Leon
1455–1474
Succeeded by
Ferdinand II of Aragon
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