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Isabella of Castile and Aragon
Princess of Asturias
Queen consort of Portugal and the Algarves
Tenure 1497 - 1498
Spouse Afonso, Prince of Portugal
Manuel I of Portugal
Miguel, Prince of Asturias and Portugal
House House of Trastámara
Father Ferdinand II of Aragon
Mother Isabella I of Castile
Born 2 October 1470(1470-10-02)
Died 28 August 1498 (aged 27)
Castilian and Leonese royalty
House of Trastámara
Escudo Corona de Castilla.png

Henry II
Children include
   John I
   Eleanor, Queen of Navarre
John I
Children include
   Henry III
   Ferdinand I of Aragon, Valencia and Sicily
Henry III and II of Leon
Children include
   John II
   Maria, Queen of Aragon, Valencia, Sicily and Naples
John II
Children include
   Henry IV
   Isabella I
   Alfonso, Prince of Asturias
Henry IV and III of Leon
   Joan, Queen of Portugal
Isabella I with Ferdinand V
   Isabella, Queen of Portugal
   John, Prince of Asturias
   Joanna the Mad
   Maria, Queen of Portugal
   Catherine, Queen of England

Isabella, Princess of Asturias (2 October 1470 – 28 August 1498) was the Queen Consort of Portugal and the eldest daughter and heiress presumptive of King Ferdinand II of Aragon and Queen Isabella I of Castile. Her younger sisters were Catherine, Queen of England, Queen Joanna I of Castile, and Maria, Queen of Portugal.



In 1490 Isabella married Afonso, Crown Prince of Portugal, the heir of John II of Portugal. Though it was an arranged marriage, Isabella and Afonso quickly fell in love, and Isabel was grief-stricken when he died in 1491: sent home to her parents by John II, she declared that she would never marry again, and would enter a convent. Her parents ignored this, and in 1497 she was persuaded to marry to Manuel I of Portugal, Afonso's uncle and John II's cousin and successor. She did so on condition that Manuel followed her parents' policy and expelled the Jews who would not convert to Christianity from his realm. This he duly did. In the same year, she became Princess of Asturias and heiress of Castile, following the death of her only brother, John. In 1498, she herself died in child-birth, giving birth to Miguel da Paz, who was heir to the thrones of Castile and Portugal until his death in 1500. Manuel's chance to become king of Castile vanished with Isabella's death, and the main hope of uniting all Iberian kingdoms vanished at Miguel's death. Manuel then married Isabella's younger sister, Maria of Aragon, who bore him his son and heir John III. Portugal and Spain would themselves be united from 1580 -1640, when Manuel and Maria's grandson (by their daughter Isabella and Charles I of Spain), Philip II of Spain, successfully claimed Portugal.


16. John I of Castile
8. Ferdinand I of Aragon
17. Eleanor of Aragon (=25)
4. John II of Aragon
18. Sancho of Alburquerque
9. Eleanor of Alburquerque
19. Infanta Beatriz of Portugal
2. Ferdinand II of Aragon
20. Admiral Alonzo Henriques
10. Frederick Henriques, Conde de Melgar
21. Juana González
5. Juana Enríquez
22. Diego Fernandez de Cordova
11. Mariana de Córdoba
23. Inez de Toledo
1. Isabella, Princess of Asturias
24. John I of Castile (=16)
12. Henry III of Castile
25. Eleanor of Aragon (=17)
6. John II of Castile
26. John of Gaunt, 1st Duke of Lancaster
13. Katherine of Lancaster
27. Constance of Castile
3. Isabella I of Castile
28. John I of Portugal
14. Infante João of Portugal
29. Philippa of Lancaster
7. Isabel of Portugal
30. Afonso, 1st Duke of Braganza
15. Isabella of Braganza
31. Beatriz Pereira de Alvim

Titles from birth to death

  • The Princess of Asturias (1470–1478)
  • The Infanta Isabella (1478–1490)
  • The Princess of Portugal (1490–1491)
  • The Dowager Princess of Portugal (1491–1497)
  • The Queen of Portugal (1497–1498)
Isabella, Princess of Asturias (1470–1498)
Born: 1470 Died: 1498
Portuguese royalty
Preceded by
Leonor of Viseu
Queen Consort of Portugal
Succeeded by
Maria of Aragon
Princess of Portugal
as spouse of the Prince
Succeeded by
Eleanor of Mendoza
Spanish nobility
Preceded by
Isabella, Princess of Aragon
Princess of Asturias
Succeeded by
Infante Juan
Preceded by
Infante Juan
Princess of Asturias
Succeeded by
Miguel, Prince of Portugal


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