The Countess of Bute
Lady Bute in 1780
Mary Wortley Montagu

(1718-01-19)19 January 1718
Died6 November 1794(1794-11-06) (aged 76)
Isleworth, England
Resting placeSt Leonard's Churchyard, Wortley, South Yorkshire, England
(m. 1736; died 1792)
Children11, including:
John Stuart, 1st Marquess of Bute
Hon. James Stuart
Hon Frederick Stuart
Hon. Charles Stuart
Hon. William Stuart
Lady Louisa Stuart
Parent(s)Sir Edward Wortley Montagu
Lady Mary Pierrepont

Mary Stuart, Countess of Bute, 1st Baroness Mount Stuart (née Montagu; 19 January 1718 – 6 November 1794) was the wife of British nobleman John Stuart, 3rd Earl of Bute, who served as Prime Minister from 1762 to 1763.

Life and family

Coat of arms of Baroness Mount Stuart
Coat of arms of Baroness Mount Stuart

Lady Bute was born in 1718, the only daughter of Sir Edward Wortley Montagu and Lady Mary Pierrepont, the daughter of Evelyn Pierrepont, 1st Duke of Kingston-upon-Hull. She was born during her father's tenure as ambassador to the Ottoman Empire, which her mother wrote about in her Letters from Turkey.

On 24 August 1736, she married John Stuart, 3rd Earl of Bute, who became the prime minister of Great Britain in 1762.[1] The couple had five sons and six daughters,[1] including:

  1. Lady Mary Stuart (c. 1741 – 5 April 1824), married James Lowther, later created Earl of Lonsdale, on 7 September 1761
  2. John Stuart, Lord Mount Stuart (30 June 1744 – 16 November 1814), politician who succeeded as 4th Earl of Bute and was later created Marquess of Bute
  3. Lady Anne Stuart (born c. 1745), married Hugh Percy, Lord Warkworth, later the 2nd Duke of Northumberland, on 2 July 1764
  4. The Hon James Archibald Stuart (19 September 1747 – 1 March 1818), politician and author
  5. Lady Augusta Stuart (c. 1748 – 12 February 1778), married Andrew Corbett
  6. Lady Jane Stuart (c. 1748 – 28 February 1828), married George Macartney, later created Earl Macartney, on 1 February 1768
  7. The Hon Frederick Stuart (1751–1802), politician[1]
  8. The Hon Charles Stuart (January 1753 – 25 May 1801), soldier and politician
  9. The Hon William Stuart (March 1755 – 6 March 1822), Anglican prelate who served as Archbishop of Armagh
  10. Lady Caroline Stuart (before 1763 – 20 January 1813), married The Hon John Dawson, later the 1st Earl of Portarlington, on 1 January 1778
  11. Lady Louisa Stuart (12 August 1757 – 4 August 1851), writer who died unmarried[2]

In 1761, she was created Baroness Mount Stuart, of Wortley in the county of York, with a remainder to her male heirs by her husband.[3]

Lady Bute died on 6 November 1794 in Isleworth, Middlesex.[1][4] Her eldest son, John, succeeded to her title.


In 1774, Mary Delany wrote to her friend Bernard Granville, Jacobite Duke of Albemarle, saying: "You know so much of Lady Bute that I need say nothing of her agreeableness, her good sense, and good principles, which with great civility must be always pleasing."[5]

Writing for the Oxford Dictionary of National Biography, Karl Wolfgang Schweizer said that: "Lady Bute seems to have been a woman of prudence, loyalty, and tact, greatly devoted to her husband and family."[1]


  1. ^ a b c d e Schweizer, Karl Wolfgang (October 2009) [2004]. "Stuart, John, third earl of Bute (1713–1792)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/26716. (Subscription or UK public library membership required.)
  2. ^ Miller, Karl (January 2006) [2004]. "Stuart, Lady Louisa (1757–1851)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/42015. (Subscription or UK public library membership required.)
  3. ^ "No. 10092". The London Gazette. 31 March 1761. p. 1.
  4. ^ Carrell, Jennifer Lee (2004). The Speckled Monster. Penguin Group. ISBN 978-1-4406-2335-6. Retrieved 4 August 2013.
  5. ^ Delany, Mary (1861). Autobiography and Correspondence of Mrs Delany. V. p. 36.
Peerage of Great Britain New creation Baroness Mount Stuart 1761–1794 Succeeded byJohn Stuart