Arms of Thynne: Quarterly: 1st and 4th:
Barry of ten or and sable
(Boteville); 2nd and 3rd:
Argent, a lion rampant with tail nowed and erected gules
Thomas Thynne, 2nd Marquess of Bath KG (25 January 1765 - 27 March 1837), styled Viscount Weymouth from 1789 until 1796, was a British peer.
Thynne was the eldest son of
Thomas Thynne, 1st Marquess of Bath and Lady Elizabeth Cavendish-Bentinck. He succeeded as 2nd Marquess in 1796 on the death of his father.
He was educated at
Winchester College and admitted as a nobleman to St John's College, Cambridge in 1785, graduating M.A. in 1787. 
Between 1786 and 1790, he was MP (Tory) for
Weobley. He later sat for Bath from 1790 to 1796. He was Lord Lieutenant of Somerset between 1819 and 1837 and was invested as a Knight of the Garter on 16 July 1823.
Marriage and progeny
Lord Bath married the Honourable Isabella Elizabeth Byng, 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 have 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 have four children.
Lord John Thynne (7 November 1798 - 9 February 1881); he married Anne Beresford on 2 March 1824. They have nine children. Lady Louisa Thynne (25 March 1801 - 7 November 1859); she married
Henry Lascelles, 3rd Earl of Harewood on 5 July 1823. They have 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 have seven children. Reverend Lord Charles Thynne (9 February 1813 - 11 August 1894); he married Harriet Bagot on 18 July 1837. They have two children.
View of Bath Street, Frome
Lord John Thynne
He was a benefactor in the nearby town of
Frome, giving up land and buildings so that a new wide road could be created leading south from the town centre, now called Bath Street. On another occasion he set aside land for allotments for a hundred families. "I have been told that at a certain hour in the morning he would admit the humblest persons in his parish, listen to their little concerns, and advise them.....He was one of the few who well understood for what purposes rank, wealth, and influence, are conferred." 
Death and burial
Lord Bath died in 1837, aged 72, and was buried at his home,
Longleat House. "I was told ten thousand were present, one hundred and fifty horsemen." His eldest son Thomas predeceased him by some two months and he was therefore succeeded by his second son  Henry.
"Thynne, The Hon. Thomas (THN785T)". A Cambridge Alumni Database. University of Cambridge.
Gill, Derek J, ed. (2003). Experiences of a 19th Century Gentleman: The diary of Thomas Bunn of Frome. Frome: Frome Society for Local Study. p. 43.
Gill, Derek J (ed.). op.cit. p. 43.
^ Burke, Sir Bernard, (1938 ed) Burke's Peerage, Baronetage and Knightage. Shaw, London. p. 243
^ a b c
Woodfall, H. (1768). . p. 258. The Peerage of England; Containing a Genealogical and Historical Account of All the Peers of that Kingdom Etc. Fourth Edition, Carefully Corrected, and Continued to the Present Time, Volume 6
^ a b
Lee, Sidney; Edwards, A. S. G. (revised) (2004). "Thynne, William (d. 1546)". (online ed.). Oxford University Press. Oxford Dictionary of National Biography doi: 10.1093/ref:odnb/27426. (Subscription or UK public library membership required.)
^ Girouard, Mark,
Thynne, Sir John (1515-1580), estate manager and builder of Longleat in Oxford Dictionary of Biography ( Oxford University Press, 2004)
Booth, Muriel. "Thynne, John (?1550-1604), of Longleat, Wilts". History of Parliament. The History of Parliament Trust . Retrieved 2016.
Lancaster, Henry; Thrush, Andrew. "Thynne, Charles (c.1568-1652), of Cheddar, Som". History of Parliament. The History of Parliament Trust . Retrieved 2016.
Pugh, R. B.; Crittall, Elizabeth, eds. (1957). "Parliamentary history: 1529-1629". . A History of the County of Wiltshire: Volume 5 British History Online. London: Victoria County History.
Ferris, John P. "Thynne, Sir James (c.1605-70), of Longbridge Deverill, Wilts". History of Parliament. The History of Parliament Trust . Retrieved 2016.
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Marshall, Alan (2008) . "Thynne, Thomas [nicknamed Tom of Ten Thousand] (1647/8-1682)". (online ed.). Oxford University Press. Oxford Dictionary of National Biography doi: 10.1093/ref:odnb/27423. (Subscription or UK public library membership required.)
Heath-Caldwell, J. J. "Thomas Thynne, 1st Marquess of Bath, 3rd Viscount Weymouth". JJ Heath-Caldwell . Retrieved 2016.
Hayton, D. W. "Thynne, Hon. Henry (1675-1708)". The History of Parliament. The History of Parliament Trust . Retrieved 2016.
Dunaway, Stewart (2013). . Lulu. p. 33. Lord John Carteret, Earl Granville: His Life History and the Granville Grants ISBN . 9781300878070
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Thorne, Roland. "Carteret [formerly Thynne], Henry Frederick". Oxford Dictionary of National Biography . Retrieved 2016.
"Thomas Thynne, 2nd Marquess of Bath (1765-1837)". National Portrait Gallery . Retrieved 2016.
Escott, Margaret. "Thynne, Lord Henry Frederick (1797-1837), of 6 Grovesnor Square, Mdx". History of Parliament. The History of Parliament Trust . Retrieved 2016.
"John Thynne, 4th Marquess of Bath (1831-1896), Diplomat and landowner". National Portrait Gallery . Retrieved 2016.