The Battle of Boroughmuir was fought on 30 July 1335 between Guy, Count of Namur, a cousin of Queen Philippa of England, and John Randolph, 3rd Earl of Moray and Guardian of Scotland. Namur was on his way to join Edward III on his invasion of Scotland, when he was intercepted on the common grazing ground to the south of Edinburgh - the Borough Muir. The fighting continued into the city itself, and concluded in a desperate struggle in the ruins of the old castle.