The MacDonalds of Kenknock and Garth are traditionally said to descend from MacDonnell of Keppoch via the Auchnacoichean stirpes. This relationship is proved by the Sasine in favour of Angus MacDonald for the lands of Easter and Nether More dated 17 June 1678, on wadset from Robert Campbell of Glenlyon, and in which he is styled “son of Angus MacDonald of Auchnacoichean” (NRS RS52/7/255). That Angus was succeeded by his son;
Angus MacDonald, 2nd of Kenknock, who had settled in Edinburgh by 31 March 1748, when he sold Kenknock and Easter More to the Earl of Breadalbane (see NR SGD112/2/92/10). The Clan Donald, Vol. 3, p 458, states that Angus “had a son, Captain John Macdonald of Garth, who served in the 84th Regiment. He had two sons, John and Archibald. Archibald entered the Army in 1805, and went out to Canada in 1819. He had a large family, among whom Archibald, whose son is Colonel Archibald H. Macdonald of Guelph, Canada. Captain Macdonald of Garth’s daughter Helen married Lieutenant-General Sir Archibald Campbell, Bart. of Garth, and had, among others, Major-General Sir John Campbell. John Macdonald of Monachyle was of the same family.”
Further research is currently being conducted into the Kenknock/Garth stirpes and when completed, an entry will be included within a subsequent edition of volume 6 of the Red Book.