Infante João 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    Infante Afonso (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    Blessed Joana, Crown Princess of Portugal    Infante João (future John II) John II    Afonso, Crown Prince of Portugal    Jorge, Duke of Coimbra (illegitimate) Manuel I Children include    Miguel da Paz, Crown Prince of Spain and Portugal    Infante João (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    Infanta Maria Manuela, Princess of Asturias    João, Crown Prince of Portugal Grandchildren include    Infante Sebastião (future Sebastian I)    Carlos, Prince of Asturias Sebastian Henry Anthony (disputed king)

John of Portugal (Portuguese: João, pron. IPA [ʒu'ɐ̃ũ]) (Santarém, January 13, 1400 – October 18, 1442, Alcácer do Sal) was a Prince of Portugal of the House of Aviz, son of King John I of Portugal and his wife Philippa of Lancaster. He was Constable of Portugal, after the death of Nuno Álvares Pereira. He was also Lord of Reguengos, Colares and Belas. In 1424, John married his niece Isabella of Braganza, daughter of his half-brother Afonso, Duke of Braganza.

During the reign of his brother Edward, John joined his brother Pedro, Duke of Coimbra against the expedition to Tangier that would end in a disaster. After the disaster he defended that the recently conquered Ceuta should be offered in exchange for his brother Ferdinand, the Saint Prince, that was captive in Tangier, something that was against Ferdinand's wishes.

In the beginning of his nephew Afonso V's reign, the regency of the kingdom was delegated on Queen Mother Leonor of Aragon (his sister-in-law). This decision in the will of late King Edward was controversial and soon popular discontent grew. It was John who installed himself in the capital Lisbon and avoided a rebellion. After that he refused the proposals for an alliance with Leonor of Aragon and his half-brother Afonso, Duke of Braganza, and defended the summoning of the Cortes to name Pedro, Duke of Coimbra the new regent.

[edit] Issue

• Diogo of Portugal, general of the kingdom (1423–1443)
• Isabel of Portugal (1428–1496), married to John II of Castile and mother of Isabella I of Castile and Alfonso, Prince of Asturias
• Beatriz of Portugal (1430–1506), married to Infante dom Ferdinand, Duke of Viseu
• Filipa of Portugal (1432 – c.1450), lady of Almada