Composed of infantry and cavalry , the Scottish force was commanded Control by Alexander of Dundonald , Steward of Scotland .

He and Walter Stewart , 6th High Steward of Scotland disguised their few men as cows , so the garrison was unaware of their presence .

Herbert , Bishop of Glasgow , Baldwin , Sheriff of Lanark/Clydesdale , and Walter fitz Alan , Steward of Scotland are all possible candidates for this position .

The Bruce loyalists were led Causation by Sir Archibald Douglas , supported Supporting by John Randolph , 3rd Earl of Moray , the Steward , the future Robert II of Scotland , and Simon Fraser .