" Of the rival league of Clan Quhele we have a still less distinct account, for reasons which will appear in the sequel. Some authors have identified them with the numerous and powerful sept of MacKay. If this is done on good authority, which is to be doubted, the MacKays must have shifted their settlements greatly since the reign of Robert III, since they are now to be found (as a clan) in the extreme northern parts of Scotland, in the counties of Ross and Sutherland. We "

― Walter Scott , The Complete Novels of Sir Walter Scott: Waverly, Rob Roy, Ivanhoe, The Pirate, Old Mortality, The Guy Mannering, The Antiquary, The Heart of Midlothian ... of Nigel, Tales from Benedictine Sources...