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Diogo, Duke of Viseu. Infante Diogo of Viseu (1450–1484) was the second son of Ferdinand, Duke of Viseu, and his wife Beatriz, Duchess of Viseu . History. Diogo's father, uncle of King John II, was believed to be the richest man in Portugal, having accumulated two duchies and numerous lordships.
Duke of Viseu (in Portuguese Duque de Viseu) was a Portuguese Royal Dukedom created in 1415 by King John I of Portugal for his third male child, Henry the Navigator, following the conquest of Ceuta.
D. Diogo de Viseu, Infante de Portugal (Alcáçovas 1451 — 1484 Setúbal) foi 4º Duque de Viseu, 4º Senhor da Covilhã, 3º Duque de Beja e 3º Senhor de Moura, filho do Infante Fernando (irmão de Afonso V) e da Infanta Beatriz.
- 1484 (33–34 anos), Reino de Portugal
Viseu, Diogo duca di. Enciclopedia on line. Nobile portoghese (m. Setúbal 1484); fratello della regina, cospirò contro il cognato Giovanni II, re del Portogallo, ...
Diogo, Duke of Viseu was the son of Ferdinand, Duke of Viseu and Beja and Beatrice, Duchess of Viseu. He inherited the title of 'Duke of Viseu' after the death of his father and then the death of...
On August 27, 1484, João II of Portugal killed his cousin and brother-in-law Diogo, Duke of Viseu, with his own hand, stabbing him three times with a dagger.
Bibliography. Diogo, Constable of Portugal. Diogo of Portugal (1425–1443) was a Portuguese royal prince, who briefly served as Constable of Portugal and Master of the Order of Santiago . Diogo was the eldest son of John, Lord of Reguengos de Monsaraz, Infante of Portugal, and of his wife (and niece) Isabella of Barcelos.
