MACKENZIE, Hon. William Frederick (1791-1814).

Published in The History of Parliament: the House of Commons 1790-1820, ed. R. Thorne, 1986
Available from Boydell and Brewer



1812 - 25 Aug. 1814

Family and Education

b. 21 July 1791,1 3rd s. of Francis Humberston Mackenzie*, Lord Seaforth. educ. Harrow 1806; Trinity Coll. Camb. 1808. unm.

Offices Held


Mackenzie’s two elder brothers died young and in 1810, when Glenbervie described him as ‘a very lively, sensible young man’,2 he stood heir to his father, chief of the Mackenzie clan. He was too young to take advantage of a vacancy for Ross-shire, where Lord Seaforth’s interest was dominant, in October 1809. Attempts to reach a compromise with a rival candidate in order to ensure his quiet succession to the seat when he came of age were unsuccessful and his father had to turn to a locum. In 1811, it was thought that Seaforth might put him up for Inverness Burghs,3 but at the general election of 1812 he stood for Ross-shire and was returned after a contest.

He was expected to support the Liverpool ministry, and appears to have done so, but he showed the same liberal cast of mind as his father. He voted for Catholic relief, 2 Mar. and 24 May 1813, before and after taking leave of absence on account of illness in his family,4 and condemned the moratorium on French involvement in the slave trade conceded by the Treaty of Paris, 27 June 1814.

Mackenzie’s remaining brother died in 1813 and he too predeceased his father, 25 Aug. 1814. Lord Lauderdale related the circumstances to Lord Holland:

He was to have gone down with Maitland but was obliged to stay a day later, and went straight through in the mail coach. The day after his arrival he was seized with a violent fever which was attributed to the heat and jolting he had been exposed to. In the course of his illness however his headaches were so excruciating and the symptoms so singular that they thought it right to open his head when there appeared a bone in the shape of a lancet that had grown from the inner surface of his skull and pressed upon his brain. This Gregory says must have killed him at all events and thinks that the journey had little share even in expediting it.5

Ref Volumes: 1790-1820

Author: David R. Fisher


  • 1. J. Barron, Northern Highlands in 19th Cent. i. 53.
  • 2. Glenbervie Diaries, ii. 51.
  • 3. SRO GD23/6/745, C. to J. Grant, 20 July, 9 Sept. 1811.
  • 4. CJ, lxviii. 273, 428.
  • 5. Add. 51691.