 The generally accepted date of the Battle of Bealach nam Broig is 1452 which therefore casts doubt on the story written in the "Letterfearn manuscript".The story runs that Euphame of Ross wished to marry Mackenzie, despite his refusals.Her followers imprisoned him and tortured his servant, who stated that Eilean Donan Castle would never be surrendered by its constable, Macaulay, except to the one who wore Mackenzie's ring.