The remote areas in the north east of Cowal, which were theoretically under the dominion of Clan Lamont, were used by Scottish kings for hunting; indeed, Cowal was the last part of Britain to have wild boar. When King John Balliol was threatened by his rival, Robert de Bruys, Balliol's ally, the king of England, established Henry Percy at Carrick Castle, in the region; likewise Dunoon Castle further south. De Bruys expelled the English from Cowal, with the aid of the Campbells (who were based nearby at Loch Awe), and eventually defeated Balliol. De Bruy's son gave Carrick Castle to the Campbells, while, after spending some time as a direct Royal possession, Dunoon Castle was handed to them by James III, who made the Campbells its Honorary Keepers.