 His son Donald Balloch MacDonald the 2nd chief led the clan when they fought and won at the first Battle of Inverlochy (1431).This was in support of their cousin Alexander of Islay, Earl of Ross and chief of Clan Donald, 3rd Lord of the Isles.The third Chief, Sir John Mor with his heir John Cathanach and three grandsons were apprehended through the treachery of MacIain of Ardnamurchan and were executed in Edinburgh for treason.