 He raised an army in Lochaber and also cleared the tenants of that area, replacing them with his supporters.After the parliament of 1504, a royal fleet sailed north from Ayr to attack the Castle of Cairn-na-Burgh, west of Mull, where it is thought that Maclean of Duart had Donald Dubh in his keeping.As progress at the siege was slow, James sent Hans the royal gunner in Robert Barton's ship and then the Earl of Arran with provisions and more artillery.