 In 1488 Hugh Montgomery, the third Lord Montgomery was on the victors side at the Battle of Sauchieburn, and Alexander Cunningham, 1st Earl of Glencairn slain with the defeated James III.Montgomery was rewarded with the grant for life of the Isle of Arran as well as ballie of Bute and Cunningham.However Cunningham was claimed by the Cunninghams of Glencairn (chiefs of Clan Cunningham), and feud arose between the two clans in which the Cunninghams burnt down Montgomery's Eglinton Castle.