Tibbers Castle led to a succession crisis resulting in English rule of Scotland under Edward I. Robert the Bruce's family was one of the claimants and in 1306 he was crowned king, leading to war with England. The first phase of Bruce's campaign in 1306 was to capture the English-held castles of Ayr, Dalswinton, Inverkip and Tibbers. Control was given to John de Seton until the English recaptured the castle from the Scots, hanging the defenders, and a larger garrison, this time numbering 54, was installed. In 1313 the Scots regained control of the region. From there Tibbers Castle remained in Scottish
Battle of Glen Trool most powerful men in Scotland, the previous year 1306. This led to a bitter civil war between the Bruce's faction and the Comyns and their allies, notably Edward I. After his defeat at the Battle of Methven and subsequently at the Battle of Dalry in the summer of 1306 the recently crowned King Robert was little better than a fugitive, disappearing altogether from the historical record for a number of months. It wasn't until the spring of 1307 that he made a reappearance, landing in the south-west of Scotland with soldiers recruited, for the most part, from the Western Isles.