Mary Stuart, Countess of Bute

Mary Stuart, Countess of Bute and 1st Baroness Mount Stuart (February 1718 – 6 November 1794) was the daughter of 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 (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)Miller, Karl, Stuart, Lady Louisa (1757–1851), writer in Oxford Dictionary of National Biography, Oxford University Press, September 2004 & , January 2006 (subscription required)......
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