Darby MacDonald ("see Clan Donald Second Edition" pg. 394) has Angus as the son of John Ban (of Toirachrain) MacDonald.
Father John's Diary (Fraser pg. 192) has Angus the son of John "a Toirrachroin" of John of John. Lot number states Lot 14 (not 7), 1st Lochiel.
Father John's partial 1839 Census (Fraser) for Lot 7 1st Lochiel shows Angus as head of household with the following names listed Duncan, John, Mary, Cathren, Donald, Donald, Archibald (age 14) and Allan (age 12).
If your Angus of lot 7, 1st Lochiel is the son of John Ban (of Toirachrain) MacDonald his line would be Angus of John Ban of John of John of Duncan Ban of Duncan of John Mor of Roari(Roderick) of Ian Raurdh(Red John) of Neil of Anghas Buidhe(Blonde Angus) of Eoghan (Ewan) of Charles of Hector Og(Young Hector) of Hector Ard(High Hector) of Alistair Mor McDonald, Laird of Loup(e).
A number of Angus' children married other Lancaster Twp. "Loupe" McDonalds.
Which child of Angus are you descended from?