When Raimond-Roger and Arnaud, viscount of Castelbon, wished to join their possessions, the Count Ermengol VIII of Urgell and Bernard de Villemur, bishop of Urgell, saw in this a threat and declared war. Overcome and captured, the count of Foix and Arnaud were imprisoned from February to September 1203. King Peter II of Aragón intervened, however, wishing to spare them for his fight to conquer Languedoc. Moreover, Peter II gave as a fief the castles of Trenton and Quérigut (1209) to Raimond-Roger, after having already given various other Catalan seigniories (1208).