Marriage and progeny
Lord Bath married the Honourable Isabella Elizabeth Byng (21 September 1773 – 1 May 1830), daughter of George Byng, 4th Viscount Torrington, on 14 April 1794. They had eleven children:
Lady Elizabeth Thynne (27 February 1795 – 16 February 1866); she married John Campbell, 1st Earl Cawdor on 5 September 1816. They had seven children.
Thomas Thynne, Viscount Weymouth (9 April 1796 – 16 January 1837); he married Harriet Matilda Robbins on 11 May 1820.
Henry Frederick Thynne, 3rd Marquess of Bath (4 May 1797 – 24 June 1837); he married Hon. Harriet Baring on 10 April 1830. They had four children.
Lord John Thynne (7 November 1798 – 9 February 1881); he married Anne Beresford on 2 March 1824. They had nine children.
Lady Louisa Thynne (25 March 1801 – 7 November 1859); she married Henry Lascelles, 3rd Earl of Harewood on 5 July 1823. They had thirteen children.
Lord William Thynne (17 October 1803 – 30 January 1890); he married Belinda Brumel on 19 December 1861.
Lord Francis Thynne (20 January 1805 – 29 May 1821)
Lord Edward Thynne (23 January 1807 – 4 February 1884), married first Elizabeth Mellish and second Cecilia Anne Mary Gore, by whom he had issue.
Lord George Thynne (25 December 1808 – 19 June 1832)
Lady Charlotte Anne Thynne (10 April 1811 – 18 March 1895); she married Walter Montagu Douglas Scott, 5th Duke of Buccleuch on 13 August 1829. They had seven children.
Reverend Lord Charles Thynne (9 February 1813 – 11 August 1894); he married the novelist Harriet Bagot on 18 July 1837. They had two children.