The Earl of Fife fought with the Bruce loyalists at the Battle of Dupplin Moor where, he being made prisoner, changed sides and, with William Sinclair, Bishop of Dunkeld, a great adherent of Robert the Bruce, crowned Edward Balliol King of Scots at Scone on 24 September 1332. The following year, on 19 July 1333, he fought with the Scottish army at the Battle of Halidon Hill, when he was again captured.