Mary Stuart, Countess of Bute

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The Right Honourable
The Countess of Bute
Mary Stuart (1718-1794), Countess of Bute, after Sir Joshua Reynolds.jpg
Mary Stuart (1718-1794), Countess of Bute
Born (1718-01-19)January 19, 1718
Died November 6, 1794(1794-11-06) (aged 76)
Spouse(s) John Stuart, 3rd Earl of Bute
Parents Edward Wortley-Montagu
Lady Mary Wortley Montagu
The coat of arms of Baroness Mount Stuart

Mary Stuart, Countess of Bute and 1st Baroness Mount Stuart (19 January 1718 – 6 November 1794)[1] was the daughter of Sir Edward Wortley Montagu and Lady Mary Pierrepont (the daughter of the 1st Duke of Kingston-upon-Hull).

On 27 August 1736, she married the future Prime Minister of the United Kingdom, John Stuart, 3rd Earl of Bute and had at least nine children by him:

  1. Lady Mary Stuart (ca. 1741 – 5 April 1824), who married James Lowther, later the 1st Earl of Lonsdale, on 7 September 1761
  2. John Stuart, 1st Marquess of Bute (30 June 1744 – 16 November 1814)
  3. Lady Anne Stuart (born ca. 1745), who married Lord Warkworth, later the 2nd Duke of Northumberland, on 2 July 1764
  4. The Hon. James Archibald Stuart (19 September 1747 – 1 March 1818)
  5. Lady Jane Stuart (ca. 1748 – 28 February 1828), who married George Macartney, later the 1st Earl Macartney, on 1 February 1768.
  6. The Hon. Sir Charles Stuart (January 1753 – 25 May 1801)
  7. The Most Rev. and Hon. William Stuart, Archbishop of Armagh (Church of Ireland) (March 1755 – 6 March 1822)
  8. Lady Caroline Stuart (before 1763 – 20 January 1813), who married The Hon. John Dawson, later the 1st Earl of Portarlington, on 1 January 1778.
  9. Lady Louisa Stuart (12 August 1757 – 4 August 1851)[2]

In 1761, she was created Baroness Mount Stuart of Wortley, co. York and upon her death, was succeeded by her son, the 4th Earl of Bute.

In 1774, Mary Delany wrote to her friend Bernard Granville:[3]

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.

Titles from birth to death[edit]

  • Miss Mary Wortley Montagu (1718–1736)
  • The Rt. Hon. The Countess of Bute (1736–1792)
  • The Rt. Hon. The Dowager Countess of Bute (1792–1794)


  1. ^ Carrell, Jennifer Lee (2004). The Speckled Monster. Penguin Group. ISBN 978-1-4406-2335-6. Retrieved 4 August 2013. 
  2. ^ Miller, Karl, Stuart, Lady Louisa (1757–1851), writer in Oxford Dictionary of National Biography, Oxford University Press, September 2004 & online edition, January 2006 (subscription required) accessed 2 March 2008
  3. ^ Mrs Delany, Autobiography and Correspondence of Mrs Delany (1861), vol. V, p. 36
Peerage of Great Britain
Preceded by
(new creation)
Baroness Mount Stuart
Succeeded by
John Stuart
Preceded by
The Duchess of Newcastle
Spouse of the British Prime Minister
Succeeded by
Elizabeth Grenville