 Macdonald and Macdonald state that the Macdonalds of Knoydart were considered to descend from Allan, 2nd of Clanranald.Allan gave his son, Allan who was the first of the family, the 60 pennylands of Knoydart.Ranald, 7th of Knoydart was the last of the family to hold the lands of Knoydart.