Sancho of Castile (1342–1374)

Sancho Alfonso
Sancho Alfonso
1st Count of Alburquerque
	Sancho's tomb in the Cathedral of Burgos
Born	1342; Sevilla
Died	19 March 1374 (aged 31–32); Burgos
Spouse	Beatrice of Portugal
Issue	Fernando Sánchez, 2nd Count of Alburquerque; Eleanor, Queen of Aragon; (illeg.) Leonor Sánchez
House	Castilian House of Ivrea
Father	Alfonso XI of Castile
Mother	Leonor de Guzmán

Sancho Alfonso of Castile (1342–1374), known in Spanish as Don Sancho Alfonso de Castilla, was Infante of Castile, 1st Count of Alburquerque.

He was the ninth of the ten illegitimate children of Alfonso XI of Castile and Leonor de Guzmán.

He was born in Seville. He participated in a revolt of the Castilian nobles against the despotic rule of his brother, Peter of Castile.

In 1373 he married Beatrice of Portugal, daughter of Peter I of Portugal and Inês de Castro. They had two children: Fernando Sánchez, 2nd Count of Alburquerque, and Eleanor of Alburquerque, who married Ferdinand I of Aragon.

He also had an illegitimate daughter, Leonor Sánchez de Castilla, who had a liaison with her first cousin Fadrique de Castilla, 1st Duke of Benavente, illegitimate son of Henry II of Castile with mistress Beatriz Ponce de León.

Ancestors

Ancestors of Sancho of Castile (1342–1374)[1]

16. Alfonso X of Castile

8. Sancho IV of Castile

17. Violant of Aragon

4. Ferdinand IV of Castile

18. Alfonso of Molina

9. María de Molina

19. Mayor Alfonso de Meneses

2. Alfonso XI of Castile

20. Afonso III of Portugal

10. Denis of Portugal

21. Beatrice of Castile

5. Constance of Portugal

22. Peter III of Aragon

11. Elizabeth of Aragon

23. Constance of Sicily

1. Sancho Alfonso

24. Pedro Núñez de Guzmán

12. Álvar Pérez de Guzmán

25. Teresa Rodríguez Brizuela

6. Pedro Núñez de Guzmán

26. Gonzalo Rodríguez Girón

13. María González Girón

27. Elvira Díaz de Castañeda

3. Leonor de Guzmán

28. Pedro Ponce de Cabrera

14. Fernán Pérez Ponce de León

29. Aldonza Alfonso de León

7. Juana Ponce de León

30. Gutierre Suárez de Meneses

15. Urraca Gutiérrez de Meneses

31. Elvira Anes de Sousa

References

de Sousa, Antonio Caetano (1735). Historia genealogica da casa real portugueza. Lisboa Occidental. p. 415.

Francisco de Moxó y de Montoliu, Estudios sobre las relaciones entre Aragón y Castilla, 1997, ISBN 84-7820-387-7

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[1] Sousa, Antonio Caetano (1735). Historia genealogica da casa real portugueza. Lisboa Occidental. p. 415.