STUART, Hon. John (1767-1794), of Cardiff Castle, Glam.

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



1790 - 22 Jan. 1794

Family and Education

b. 25 Sept. 1767, 1st s. of John Stuart, 4th Earl of Bute [S], and bro. of Hon. Evelyn James Stuart* and Lord William Stuart*. Styled Visct. Mountstuart 1792-d. educ. Eton 1775-9; privately at Turin; St. John’s Camb. 1784. m. 12 Oct. 1792, Lady Elizabeth Penelope Crichton, da. and h. of Patrick, 6th Earl of Dumfries [S], 2s.

Offices Held

Col. Glam. militia 1791; ld. lt. Glam. May 1793-d.


Stuart was the heir of the dynastic marriage which brought to his father Lord Bute the Windsor estates in Glamorgan, and soon after he came of age his father secured his return for the boroughs seat.1 He had evidently been pressed to offer himself for his university, but did not consider it. His father was in the political wilderness, having offended the King by taking office in the Fox-North administration, but on 16 Apr. 1792 (after his father’s death) he wrote to the King, begging forgiveness. Insisting that he was ‘lukewarm’ in support of ‘the party’, he added, ‘my son has never taken his seat, whom I have purposely, and against his will, kept out of the way; for why should I also ruin that young man?’ Bute was forgiven and his son, now Viscount Mountstuart, who had been considered favourable to repeal of the Test Act in Scotland in April 1791, was listed a Portland Whig in December 1792 and was included by Windham in his provisional ‘third party’ list soon afterwards. In May 1793 he replaced his father as lord lieutenant of Glamorgan: Bute had informed the Duke of Portland, 20 Jan. 1793, that he regarded himself as a locum tenens for his heir.2 Mountstuart died a month after falling from his horse while hunting, 22 Jan. 1794.3

Ref Volumes: 1790-1820

Author: R. G. Thorne


  • 1. R. D. Rees ‘Parl. Rep. S. Wales 1790-1830’ (Reading Univ. Ph.D. thesis, 1962), ii. 527.
  • 2. Cornwallis Corresp. ii. 42; Geo. III Corresp. i. 749; Portland mss PwF8619.
  • 3. Gent. Mag. (1794), i. 95, where 20 Jan. is given as the date of death.