Just out of curiosity I went over to the STA for the sitters details for Angus MacDonell here it is if you are interested:


Angus MacDonell
Born 1804; probably at the farm of Inch, on the river Speyan, parish of Kilmonivaig, in Lochaber. His father, Archibald MacDonell, was one of the original officers of the Gordon Highlanders (now 92nd Regiment), which he helped to raise. His commissions were dated - Lieutenant, 1794; Captain, 1799; Major, 1805. After 19 years' service with the 92nd in Holland, Egypt, Copenhagen, the Peninsula, etc., he became Brevet Lieutenant-Colonel, and was removed to the Veterans, 1813. He was appointed Deputy-Governor of Edinburgh Castle, 1814, but caught cold in crossing a stream on his way to Edinburgh, and died the same year. Colonel MacDonell married Miss MacLauchlan, of an old family in Argyleshire, and had four sons, the eldest of whom was killed in the peninsula, at his first battle, and one daughter. His family resided with his father at Inch during his absence with the army.
Angus, the third son, the subject of this notice, was educated at Winchester. He began life as a distiller, at Milburn, and afterwards became a farmer at Inch. He emigrated to Australia, 1855, where he still resides. He invariably wears the kilt, and is a fine specimen of a Highlander, on which account his portrait (taken before 1855) has been selected for the present illustration. He married, in 1818, Mary, only child of Colonel MacDonald, or Morar, in Arisaig. She died in Australia, 1855, leaving two sons and two daughters.
Angus MacDonell's grandfather lived and died at the farm of Inch. He was present at the battle of Culloden, when in his seventeenth year. He was a son of Alexander MacDonell, sixteenth Chief of Keppoch, who fell at Culloden, 1746. Colla Beg, or Little Colln, the fifteenth Keppoch, was well known in contemporary history, having served with his men under Dundee and Montrose, and also been 'out in 1715.' The last Clan battle in Scotland, which took place at Mulroy, near Keppoch, shortly before 1688, was fought by Colla Beg against the MacIntoshes, who were defeated. The feud arose through MacIntosh of MacIntosh laying claim to the Keppoch lands, of which his ancestors had obtained Crown charters in former generations. The Keppochs had a large tract of country in their possession, extending from Corran Ferry to Loch Laggan, in Badenoch, but had no charters for it, holding their lands, as Coll of Keppoch said, 'not be a sheepskin, but by the sword, with which their ancestors had won them.' Eventually, in 1746, the lands were altogether forfeited, and passed away to the MacIntoshes.

Victorian author Amelia Murray MacGregor separately recorded detailed notes on various of the portraits and here is what she had to say about:

Angus MacDonell. Wearing a MacDonell of Keppoch kilt. In the background a view of the corrie of Unach Mor, Inverness-shire. This portrait, painted by MacLeay before the sitter emigrated to Australia in 1855 is the prototype for the whole series. MacDonell shared a mutual great-grandfather with MacLeay. Stocky and informally dressed, and painted on a different, creamier paper, with more use of gum arabic in the painting of the eyes, this portrait clearly demonstrates how, with his later sitters, MacLeay improved on their appearance, giving them, poise, elegance and immaculate costumes, but perhaps thereby losing the immediacy of MacDonnell's portrait