The third son of Lt.-Gen. Francis Humberston Mackenzie, first Lord Seaforth; he was educated at Harrow and was MP for Ross (1812-14).

REFERENCES TO William Frederick Mackenzie:

Walter Scott to J. B. S. Morritt of Rokeby, 14 September 1814 in Memoirs of the Life of Sir Walter Scott, Bart. 7 vols (Edinburgh: Robert Cadell, 1837)