John Stuart, 1st Marquess of Bute

Lord Mount Stuart in 1784, by Gainsborough Dupont.

John Stuart, 1st Marquess of Bute PC, FRS (30 June 1744 – 16 November 1814), styled Lord Mount Stuart until 1792 and known as The Earl of Bute between 1792 and 1794, was a British nobleman, coalfield owner, diplomat and politician who sat in the House of Commons from 1766 to 1776.

Early lifeEdit

Portrait of Lord Mount Stuart at age 19 by Jean-Étienne Liotard, 1763.

Stuart was born at Mount Stuart House on the Isle of Bute, the son of prime minister John Stuart, 3rd Earl of Bute, and his wife Mary Wortley Montagu. He was educated at Harrow School and Winchester College. He went to the University of Oxford, where he had private tuition from James Bladen. The degree of D.C.L., awarded to him by the university in 1793, was honorary.[1][2]

Around 1757 Stuart began to be tutored by the philosopher Adam Ferguson.[3]

Political careerEdit

Lord Mount Stuart was returned as Tory Member of Parliament for Bossiney at a by-election in 1766. He was returned in the general elections of 1768 and 1774. On 2 November 1775 he announced in the House of Commons his intention to introduce a bill to establish a militia in Scotland, and during the next few months James Boswell assisted in seeking support for the bill in Scotland. In March 1776 the bill was debated, but ultimately failed to pass.[4] He left the House of Commons in 1776 when he was elevated to the Peerage of Great Britain in his own right as Baron Cardiff, of Cardiff Castle in the County of Glamorgan. Though this title was also used, he continued to be known by his courtesy title of Lord Mount Stuart.[5] (He ranked higher in the order of precedence as the heir to an earldom than he did as a substantive baron.) He served as Lord Lieutenant of Glamorgan from 1772 to 1793 and from 1794 to his death.

In 1779 Lord Mount Stuart was sworn of the Privy Council and was sent as an envoy to the court of Turin. He was ambassador to Spain in 1783.[6] He held the sinecure of Auditor of the imprests from 1781 until the abolition of the office in 1785, upon which he was paid £7000 compensation. He was the first Lord Lieutenant of Buteshire from 1794 until his death.

Lord Mount Stuart succeeded his father in the earldom in 1792. In 1794 he was created Viscount Mountjoy, in the Isle of Wight, Earl of Windsor and Marquess of Bute. (The Mountjoy and Windsor titles recognised the Barony of Mountjoy and Viscountcy of Windsor previously held by his father-in-law, the 2nd Viscount Windsor, which had both become extinct on Lord Windsor's death in 1758.) Lord Bute was inducted as a Fellow of the Royal Society on 12 December 1799.[1]


Charlotte Jane Stuart, Marchioness of Bute, 1790s engraving

Lord Mount Stuart married an heiress, the Honourable Charlotte Hickman-Windsor (1746–1800), daughter of Herbert Hickman-Windsor, 2nd Viscount Windsor, on 12 November 1766. They had seven sons and two daughters.[1] Those included:

Charlotte died on 28 January 1800. He then married Frances Coutts, daughter of Thomas Coutts, on 17 September 1800. They had two children:

His second wife outlived him, and died on 12 November 1832.

In 1799 he (or his immediate family benefit trust) was estimated the second-wealthiest small family unit in Britain owning £4.2M (equivalent to £415,700,000 in 2019), notably as to coal-bearing and agricultural land.[7]


  1. ^ a b Thorne, Roland. "Stuart, John, first marquess of Bute (1744–1814)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/64138. (Subscription or UK public library membership required.)
  2. ^ s:Alumni Oxonienses: the Members of the University of Oxford, 1715-1886/Stuart, John, 4th Earl of Bute
  3. ^ John Robertson, The Scottish Enlightenment and the Militia Issue (Edinburgh: John Donald Publishers, 1985), pp. 83 and 96, n. 75.
  4. ^ Robertson, pp. 130-32.
  5. ^ C. Evans (ed.), The Letterbook of Richard Crawshay, 1788-1797 (South Wales Record Society 6, 1991), p. 181.
  6. ^ McCahill, M.W., The House of Lords in the Age of George III (Chichester: Wiley, 2009), p. 17, n. 23.
  7. ^ "Who wants to be a millionaire?", The Guardian, feature, 29 Sep 1999


  • Paola Bianchi, Nella specola dell'ambasciatore. Torino agli occhi di John Stuart, lord Mountstuart e marchese di Bute (1779-1783), in Architettura e città negli Stati sabaudi, a cura di E. Piccoli e F. De Pieri, Macerata, Quodlibet, 2012, pp. 135–160

External linksEdit

Parliament of Great Britain
Preceded by
Edward Wortley-Montagu
John Richmond Webb
Member of Parliament for Bossiney
With: Edward Wortley-Montagu 1766–1768
Henry Luttrell 1768–1769, 1774–1776
Sir George Osborn, Bt 1769–1774
Succeeded by
Henry Luttrell
Charles Stuart
Honorary titles
Preceded by
The Earl of Plymouth
Lord Lieutenant of Glamorgan
Succeeded by
Lord Mount Stuart
Title last held by
Lord Mount Stuart
Lord Lieutenant of Glamorgan
Succeeded by
The Marquess of Bute
New title
Office created
Lord Lieutenant of Buteshire
Diplomatic posts
Preceded by
William Lynch
British Minister to Sardinia
Succeeded by
Hon. John Hampden-Trevor
Political offices
Preceded by
William Aislabie
The Lord Sondes
Auditor of the Imprests
With: The Lord Sondes
Office abolished
Peerage of Scotland
Preceded by
John Stuart
Earl of Bute
Succeeded by
John Crichton-Stuart
Peerage of Great Britain
New creation Marquess of Bute
Succeeded by
John Crichton-Stuart
Preceded by
Mary Wortley-Montagu
Baron Mount Stuart
New creation Baron Cardiff