Donald Robertson was born in Blair Atholl, Perthshire in 1761. There were three other Donald Robertsons born in 1761 in Blair Atholl as well, so I have four sets of possible parents, though family and internet lore suggests his father was Alexander.
But here's what I know. He married, at Blair Atholl, Janet Campbell 9 Feb 1793. She was born 11 Oct 1769 in Blair Atholl. The record of their marriage states that Donald was of the homestead of Over Bohespic, she was of the homestead of Nether Bohespic. At this time, an Alexander Robertson was the landowner of both Bohespics. (One of the four Donalds born in 1761 had a father, Alexander Robertson, and mother, Christian McMillan.)
Donald did military service in North America and attained the rank of Colonel. I'm not sure in which regiment he served. The 88th, 82nd and 42nd regiments of foot are all possibilities. He seems to have served out of Nova Scotia towards the end of the American Revolution. He was in some way related to Col. Alexander James Robertson (a cousin?) who served in the 82nd and received a large land grant in Merigomish, Pictou, Nova Scotia, including Big Island, on which he built a house though he never lived there. Relatives of his did, however. Alexander went on to become the 15th Chief of Clan Robertson and their lands were restored under him. He died, childless in 1822.
Donald and Janet emigrated to Pictou, Nova Scotia on the ship, Sarah, in 1801. With them were three children, one of whom died on the voyage. They had the following kids: Jean; Margaret b.1795; Christian b.1800; John b. 1802 d. 1882; Alexander b. 1805 d. 1878; Janet b.1809 d. 1875; Catherine. John married Christian McKenzie, daughter of William McKenzie and Catherine Sutherland in Kenzieville, Nova Scotia (William was the first settler there in 1803).
In 1817, Donald and his family relocated from land in Merigomish to Barney's River, Pictou, Nova Scotia. He died there 10 Nov 1834; his wife Janet died there 12 Nov 1870. They are both buried in the Kenzieville Cemetery where, I am told, there's a monument explaining Donald's relationship to Col Alexander Robertson (I've a cousin who's going to look for it
I would love to find out who Donald's parents were and his relationship to Col. Alexander, as well as the regiment in which he served. Anything on Janet Campbell would also be appreciated. The only think I know about her ancestry is from her obituary which says that her grandfather, John, was 21 when he served in the Battle of Culloden.
Any help would be truly and deeply appreciated!