Back Roger Bernat II de Castellbò Catalan Ρογήρος Βερνάρδος Ε΄ της Φουά-Καστελμπόν Greek Roger Bernardo IV de Castellbó Spanish Roger-Bernard IV de Foix-Castelbon French Ruggero Bernardo II di Castelbon Italian Роже Бернар II де Фуа-Кастельбон Russian
 | This article relies largely or entirely on a single source. (August 2023) |
Roger-Bernard IV de Foix (c. 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.[1]
- ^ 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