18th Laird of Mackinnon. Son of John Dhu Mackinnon of Mackinnon (d. 1755) and Janet Macleod, a daughter of John Macleod, 10th of Raasay. Married to Alexandra Macleod, with whom he had three children.
In the 1780s, he wrote three Observations on the Wealth and Force of Nations, and in 1785 he published essays on the authenticity of Ossian, musical accompaniment, fortifications and the existence of the body.1
Mackinnon inherited the peninsula of Strathaird on Skye and Mishnish on Mull, but he was in financial difficulties for most of his life and sold off both, well before dying divorced, destitute and by his own hand in Dalkeith in early 1796.2
- 1Cf. To the Hebrides, footnote 343.
Boswell and Dr Johnson met young Mackinnon upon their arrival on Raasay on September 8, 1773. Boswell described him as "a young man of small size, delicate constitution, feebleness of voice and nearness of sight, but I was told had great knowledge, and hurt himself by too much study, particularly of infidel metaphysicians."