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Roger-Bernard IV de Foix (circa 1330 - 1381) was viscount of Castelbon. He was the son of Roger Bernard IV of Foix, viscount of Castelbon and Constance de Luna. He was the eighth degree ancestor of King Henry IV of France.
Biography
He was the youngest of the sons of Roger-Bernard IV de Foix, viscount of Castelbon and Constance de Luna, and obtained the viscountcy of Castelbòn (Castelbò in Catalan) and the other Catalan lands.
Marriage and issue
He married Géraude de Navailles; from this marriage were born:
- Matthew (died 1398), he succeeded Gaston III, Count of Foix (his first cousin once removed) as count of Foix.
- Isabella 1361–1428, she succeeded her brother as countess of Foix. Married to Archambaud of Grailly viscount of Castillon & Gruson and they found the branch of Foix-Grailly.
References
- Anne Berdoy & Jeanne-Marie Fritz, Mont-de-Marsan, Atlas historique des villes de France, XII c., les prémices de la ville, Ausonius éditions, septembre 2018