 Alexander, who had probably fled to Islay, found himself in a very difficult position, and on 27 August 1429 surrendered to King James at Holyrood Abbey, near the burgh of Edinburgh.King James was persuaded by his magnates to give Alexander grace, and sent him to Tantallon Castle under the custody of William Douglas, 2nd Earl of Angus, King James' nephew.While he had Alexander in custody, King James delegated the northern campaign to Alexander Stewart, Earl of Mar, with more minor roles going to Maol Choluim Mac an Tóisich, Alexander Seton of Gordon, Hugh Fraser and Aonghas de Moravia.