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Diogo, Duke of Viseu

From Wikipedia, the free encyclopedia

Diogo
Coat of arms of Viseu
Duke of Viseu and Beja
Reign1472 - 1484
PredecessorJoão, Duke of Viseu
SuccessorManuel I of Portugal
Born1450
Died1484
HouseAviz
FatherFerdinand, Duke of Viseu
MotherBeatriz of Portugal

Infante Diogo of Viseu (1450–1484) was the second son of Ferdinand, Duke of Viseu, and his wife Beatriz, Duchess of Viseu.

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Transcription

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.[1][2] In 1472, when his older brother John, Duke of Viseu, died without issue, Diogo inherited his titles and estates as Duke of Viseu and Duke of Beja.

Diogo was a popular personality at the court of his cousin King John II, and together with Duke Fernando II of Braganza, he was the main target of King John's centralization policies.[3] John II sought to limit the power of the upper nobility, which had increased greatly during the reign of John's father Afonso V of Portugal.[2][4][5]

Duke Fernando II of Braganza, husband of Isabella of Viseu, the sister-in-law of King John II of Portugal and Diogo's sister, was the first victim of John's efforts against the Portuguese nobility. In 1483, he was imprisoned, tried and executed in Évora.[6][7]

In 1484, Diogo was accused of being the center of a conspiracy against the crown and was stabbed to death by the king himself.[8][9][10]

After the execution, King John II called the duke's younger brother, Infante Manuel of Viseu, and showed him his brother's body. He promised Manuel that he would consider him his own son. At that moment, Manuel inherited his brother Diogo's titles and estates.[11][12]

Duke Diogo never married, but when he was quite young he visited the Crown of Castile, where he had a love affair with Doña Leonor de Sotomaior y Portugal (great-granddaughter of King Pedro I of Portugal). With her he had a natural son, Afonso de Portugal. King Manuel I of Portugal granted this nephew, Afonso de Portugal, the position of 8th Constable of Portugal. Afonso's daughter and heir, Beatrice of Lara, married the 3rd Marquis of Vila Real.[13]

Ancestry

See also

References

  1. ^ Sanceau 1970, p. 3.
  2. ^ a b Marques 1976, p. 179.
  3. ^ Marques 1976, p. 180.
  4. ^ McMurdo 1889, p. 2.
  5. ^ Stephens 1891, pp. 159–160.
  6. ^ McMurdo 1889, pp. 13–18.
  7. ^ Stephens 1891, p. 162.
  8. ^ Sanceau 1970, p. 5.
  9. ^ Marques 1976, p. 210.
  10. ^ McMurdo 1889, pp. 20–22.
  11. ^ Sanceau 1970, p. 6.
  12. ^ McMurdo 1889, p. 23.
  13. ^ Sanceau 1970, pp. 153–155.

Bibliography

  • Marques, Antonio Henrique R. de Oliveira (1976). History of Portugal. New York: Columbia University Press. ISBN 0-231-08353-X.
  • McMurdo, Edward (1889). The history of Portugal, from the Commencement of the Monarchy to the Reign of Alfonso III. London: Sampson Low, Marston, Searle, & Rivington. Retrieved 5 December 2023.
  • Sanceau, Elaine (1970). Reign of the Fortunate King, 1495–1521: Manuel I of Portugal. Hamden, Conn.: Archon Books. ISBN 0-2080096-8-X.
  • Stephens, H. Morse (1891). The Story of Portugal. New York: G. P. Putnam's Sons. Retrieved 5 December 2023.
  • Nobreza de Portugal e do Brasil (in Portuguese). Vol. III. Lisbon: Zairol Lda. 1989. pp. 544–545.


External links

Diogo, Duke of Viseu
Cadet branch of the House of Burgundy
Born: ? 1450 Died: ? 1484
Portuguese nobility
Preceded by Duke of Beja
1472–1484
Succeeded by
Preceded by Duke of Viseu
1472–1484
Succeeded by
This page was last edited on 10 April 2024, at 09:31
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