Gaston IV of Foix

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Gaston IV, Count of Foix, Viscount of Bearn (27 November 1422 - 25 July/28 July 1472) was a French nobleman, who founded a brief-ruling dynastic house of the Kingdom of Navarre.

He was a son of John I of Foix-Grailly and Joan of Albret. His maternal grandparents were Charles d'Albret, Constable of France and co-commander of the French army at the Battle of Agincourt where he was killed, and his wife Marie de Sully.

Gaston married the Navarrese Infanta, Leonor, in 1436. Her parents were John II and Blanche I of Navarre. At the time, Leonor appeared to have few prospects: her father was a younger son and brother of the Kings of Aragon, and Leonor had a brother, Charles of Viana, and an older sister, Blanca, standing between herself and the inheritance of Navarre. However, family dissent and death eliminated both Charles and Blanca; Leonor's father usurped the Navarrese throne, to which he added in 1458 the throne of Aragon (his older brother having died without legitimate children), and, following the deaths of Charles and Blanca, promised the inheritance of Navarre to Leonor and her husband in return for their loyalty to him, which was given.

They had eight children:

Gaston died in 1472, outlived by his wife and father-in-law.

Gaston IV of Foix
Born: 27 November 1422 Died: July 1472
Preceded by
Jean I
Count of Foix
14361472
Succeeded by
Francis