Infante Fernando, Duke of Viseu

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Portuguese royalty
House of Avis

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, Lord of Reguengos    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 Great-Grandchildren include    Jaime, Duke of Braganza, Prince 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)

The Infante Fernando, Prince of Portugal, Duke of Viseu (1433–1470, English: Ferdinand, pronounced [fɨɾˈnɐ̃du]) was the third son of Portuguese King Edward of Portugal and his wife Leonor of Aragon.

Ferdinand was born in Almeirim on November 17, 1433. He became Duke of Viseu when his uncle Henry the Navigator died in 1460. He also succeeded his uncle as Master of the Order of Aviz and responsible for the Discoveries (1460-1470).

He was twice Prince of Portugal (title attributed to the presumptive heir to the throne) first between 1438 and 1451, because his brother Edward had no children. In 1451 Prince João was born, but died months later. Fernando was then given the title of Prince of Portugal for a second time until the next year, when Edward's first daughter Princess Joana was born.

He married his cousin Beatrice of Portugal (Portuguese: Beatriz) in 1447, daughter of Infante João, Lord of Reguengos (his uncle).

From that marriage Ferdinand had nine children:

• Infante João of Viseu (1448-1472), 3rd Duke of Viseu, 2nd Duke of Beja, 6th general of the kingdom.
• Infante Diogo of Viseu (1450-1484), 4th Duke of Viseu, 3rd Duke of Beja.
• Infante Duarte of Viseu
• Infante Dinis of Viseu
• Infante Simão of Viseu
• Infanta Leonor of Viseu (1458-1525), married John II of Portugal and became Queen of Portugal.
• Infanta Isabel of Viseu (1459-1521), married Ferdinand II, Duke of Braganza,
• Infante Manuel of Viseu, king of Portugal as Manuel I after the death of his cousin John II of Portugal.
• Infanta Catarina of Viseu

Infante Fernando, Duke of Viseu House of Aviz Cadet branch of the House of Burgundy Born: 17 November 1433 Died: ? 1470
Preceded by Afonso (become Afonso V)	Prince of Portugal 1438–1451	Succeeded by John
Preceded by John	Prince of Portugal 1451–1452	Succeeded by Joan