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Gaston IV of Foix
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Gaston IV was the viscount of Béarn and the count of Foix and Bigorre in France from 1436 to 1472. He also held the viscounties of Marsan, Castelbon, Nébouzan, Villemeur and Lautrec and was, by virtue of the County of Foix, co-prince of Andorra. From 1447, he was also viscount of Narbonne.