Ferdinand, Duke of Viseu

Infante Ferdinand
Duke of Viseu and Beja
Depiction of Infante Ferdinand in a 1678 portrait in the Convent of Beja
Born	17 November 1433 Almeirim
Died	18 September 1470 (aged 36) Setúbal
Spouse	Beatrice of Portugal
Issue	John, Duke of Viseu Diogo, Duke of Viseu Eleanor, Queen of Portugal Isabella, Duchess of Braganza Manuel I, King of Portugal
House	Aviz
Father	Edward, King of Portugal
Mother	Eleanor of Aragon

Infante Ferdinand, Duke of Viseu and Beja (or Fernando, Portuguese pronunciation: [fɨɾˈnɐ̃du], 17 November 1433 – 18 September 1470) was the third son of Edward, King of Portugal and his wife Eleanor of Aragon.