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
John de Warenne, 7th Earl of Surrey Scottish throne, accompanied him on his campaign in Lothian. Balliol created Warenne earl of Strathern, but this was in name only for the properties of the earldom were held by the Scots. Warenne died in 1347 and is buried at the monastery of Lewes. He was succeeded as earl by his nephew Richard Fitzalan, who was also earl of Arundel. On 25 May 1306 Warenne married Joan of Bar, daughter of count Henry III of Bar and Eleanor of England, eldest daughter of king Edward I of England. The two were soon estranged and lived apart, and had no children,