Portuguese prince
Ferdinand, Duke of Viseu (17/11/1433 - 18/11/1470), was the third son of Edward, King of Portugal. He was born in Almeirim, Portugal and died in Setúbal. Ferdinand held multiple titles, including Duke of Viseu and Duke of Beja.
He was married to Beatrice of Portugal and had several children, including Manuel I of Portugal, João, Duke of Viseu, Isabel of Viseu, Diogo, Duke of Viseu, and Eleanor of Anjou. His parents were Edward, King of Portugal , and Eleanor of Aragon, Queen of Portugal.
Ferdinand's occupation was as an officer in the armed forces, and he held Portuguese citizenship and nationality.