Robert Bruce, Lord of Liddesdale Robert Bruce, Lord of Liddesdale Sir Robert Bruce, Lord of Liddesdale (died 11 August 1332) was an illegitimate son of King Robert the Bruce and an unknown mother. He was knighted and awarded the royal arms at the Battle of Bannockburn. His father made him Lord of Liddesdale after William II de Soules was found guilty of treason at the Black Parliament of 1320. It has been suggested that he may have been the father of Thomas Bruce, 1st Baron of Clackmannan, but there is no clear evidence for this. Faced with Edward Balliol's invasion of Scotland, he and Donnchadh
Robert the Bruce at Ramsey in the Isle of Man, laid siege to Castle Rushen in Castletown, capturing it on 21 June 1313 and denying the English the island's strategic importance. The eight years of exhausting but deliberate refusal to meet the English on even ground have caused many to consider Bruce one of the great guerrilla leaders of any age. This represented a transformation for one raised as a feudal knight. By 1314, Bruce had recaptured most of the castles in Scotland held by the English and was sending raiding parties into northern England as far as Carlisle. In response, Edward II