My own MacDonald's came from Knoydart in 1802-1804 and settled in Lochiel. They were from a small croft called Salachry on the south side of Knoyart and on the north side of Loch Nevis. Your John who stayed in Knoydart may be buried in the ancient cemetery in Kilchoan. It will be very difficult to trace your John from any Scottish records as there were none kept for Catholics except by their priest when they came to Canada. Your best bet is to connect this family into an existing developed line from here.
There are a number of recordings for your people following:
In the book “A Dictionary of Scottish Emigrants to Canada” there is the following:
McDougall, Jean From Knoydart, INV to Que, ex Greenock, summer 1815; settled prob Lanark Co. Ont. Wife of Angus McDonald, qv
McDonald, Angus, born ca 1781 From Knoydart INV to Que, ex Greenock, summer 1815 settled prob Lanark Co Ont. Farmer. Wife Jean McDougall , qv with him 2 children.
In St. Raphael’s Parish records there are the following births:
Macdonald, Catherine 07 October 1817 to Angus Macdonald and Jane MacDougald. Sponsors: John Macdonald and Allan MacDonald.
MacDonald, Donald baptized 20 July 1823 to Angus MacDonald and Jane MacDougald born on ??? Sponsors: Allen and Anna MacDonald
In the St. Finnan’s church records there is the following:
Marriage of son Archibald to his cousin Mary Cameron 1859. This entry shows Angus and Jane living on Lot 7 on the 1st of Lochiel.
Marriage of son Donald to Margaret Falkner in 1848
Marriage of son Duncan to Catherine MacDonald in 1842
Marriage of son John to Jane Dixon in 1846.
Marriage of daughter Ann to Lauchlin MacDonald in 1837
Marriage of daughter Catherine to Donald MacDonald in 1859
Death of Jane MacDougald burial 01 Dec 1888 Lochiel – 1st – Lot 7 widow of the late Angus MacDonald buried in the Catholic cemetery at Alexandria, died on 29th of November last at age 98 years, present Donald McDonald, Duncan McDonald, Alexander MacDonell priest.
Death of Angus Macdonald 23 March 1862 Lot 7, 1st Lochiel at age 82 years buried in Alexandria present William Chisholm, James J Chisholm. (May have been called Angus The Fiddler)
In Father John’s Brevity there is the following:
MacDonald, Angus 25 Apr 1840 Lochiel 1s - Lot 7 6 ½ Oats, 2 ½ Wheat, 1 peas, “mac Jen bhain au torrachroin” (son of Fair John)
In Father John’s 1839 census of Glengarry lots there is the following for Lot 7 Lochiel 1st;
Angus MacDonald, Duncan, John, Mary, Cathren, Donald, Donald, Archibald 14, Allan 12.