MACKENZIE, Kenneth, (Lord Fortrose) (1717-1761), of Seaforth.

Published in The History of Parliament: the House of Commons 1754-1790, ed. L. Namier, J. Brooke., 1964
Available from Boydell and Brewer



1741 - 1747
1747 - 1761

Family and Education

b. Nov. 1717, 1st s. of William, 5th Earl of Seaforth [S], attainted 1716, by Mary, da. and h. of Nicholas Kennett of Coxhoe, co. Dur.  educ. partly in France under Jesuits.  m. 11 Sept. 1741, Lady Mary Stewart (d. 1751), da. of Alexander, 6th Earl of Galloway [S], half-sis. of Lord Garlies and Keith Stewart, and niece of George, 9th Earl Marischal [S], 1s. 6da.  suc. fa. 8 Jan. 1740.

Offices Held


The Seaforths were Catholic chiefs of a mainly Protestant, but strongly Jacobite clan. Mackenzie’s grandfather died in exile in France; his father was ‘out’ in the ’15, escaped to France, was attainted, and forfeited his estates. Mackenzie was born in Scotland but received a Catholic education in France. His father was pardoned in 1726 and returned to Scotland; Mackenzie became a Protestant and in 1741 was allowed to purchase back from the Crown the forfeited family estates. His next ambition was to secure the restoration of the peerage. He invariably signed himself Kenneth Mackenzie, but was generally known as Lord Fortrose, even after his father’s death.

Suspicions of his Jacobitism still lingered in Scotland in 1754. These reports gained some credence by the complaints of Mackenzie’s Protestant tenantry in Lewis against the oppression of his factor. Argyll was hostile, and supported the candidature of his nephew James Stuart Mackenzie against Mackenzie in Ross-shire. But Hugh Rose of Kilravock gave his interest to Mackenzie in exchange for Mackenzie’s interest in Inverness Burghs, which were then placed at Pelham’s disposal;1 and General Bland, commander-in-chief in Scotland, having obtained Mackenzie’s undertaking that the oppressions in Lewis would cease, assured wavering Mackenzie voters ‘that ... his Lordship would be as acceptable both to his Majesty and his English ministers as any that were sent from this country’.2 After a violent contest, Mackenzie was returned on the votes of the Roses and all the Mackenzies, save one (Stuart Mackenzie’s cousin), against the combined strength of the Rosses and the Munroes.3

During the summer Bland wrote to Hardwicke and Newcastle warmly commending Mackenzie as ‘the first Protestant of his family’ and for his ‘meritorious conduct’ in the ’45. ‘I find him thoroughly attached to his Majesty’s interest and does all he can to fix the Mackenzies in the same way of thinking.’4 These commendations convinced Newcastle; and by November Lord Deskford looked upon Mackenzie as ‘the Duke of Newcastle’s friend’ in his dispute with Argyll.5 Mackenzie seems to have remained faithful to Newcastle during his Administration, but was not restored to his peerage. During the negotiations of 1757 Newcastle listed him among the Scots personally attached to himself; but in the division of 2 May 1757 on the Minorca inquiry Mackenzie was listed by Fox among those who ‘very unexpectedly left us’.6

In April 1760 Newcastle believed that Mackenzie would be re-elected for Ross at the general election; but, obviously anxious to ingratiate himself with the Bute family, then at odds with Argyll, Mackenzie retired from Parliament and gave his interest in Ross to James Stuart Mackenzie.7  He died 18 Oct. 1761.

Ref Volumes: 1754-1790

Author: Edith Lady Haden-Guest


  • 1. Add. 32734, ff. 249, 265.
  • 2. Add. 35448, f. 110.
  • 3. Mackenzie of Delvine mss, NLS, 1496, f. 75.
  • 4. Add. 35448, f. 120b; 32736, f. 500.
  • 5. Add. 32995, f. 284.
  • 6. Fox to Devonshire, 3 May 1757, Devonshire mss.
  • 7. Stuart Mackenzie to Bute, 12 Nov. 1760, Bute mss.