Roger-Bernard III of Foix

Roger-Bernard III (1243–1302) became Count of Foix in 1265, succeeding his father Roger IV. Philip III of France took Foix in 1272 after wars among vassals and imprisoned him at Carcassonne. In 1278 his treaty with the bishop of Urgell set up joint rule of Andorra. Captured by Peter III of Aragon at Balaguer in 1280, he was held until 1284.

In 1290 he seized Béarn through his wife Margaret of Montcada. Her nephew Bernard VI of Armagnac contested the inheritance, beginning a long struggle between the houses. He led French troops against the English at Saint-Sever and Bonnegarde, died at Tarascon, and was a troubadour.