Thomas Thynne, 1st Marquess of Bath

The Most Honourable The Marquess of Bath KG PC
Portrait by Thomas Lawrence
Secretary of State for the Northern Department
In office 7 March 1779 – 27 October 1779
Monarch	George III
Prime Minister	Lord North
Preceded by	The Earl of Suffolk
Succeeded by	The Viscount Stormont
In office 20 January 1768 – 21 October 1768
Monarch	George III
Prime Minister	William Pitt the Elder The Duke of Grafton
Preceded by	Henry Seymour Conway
Succeeded by	The Earl of Rochford
Secretary of State for the Southern Department
In office 9 November 1775 – 24 November 1779
Monarch	George III
Prime Minister	Lord North
Preceded by	The Earl of Rochford
Succeeded by	The Earl of Hillsborough
In office 21 October 1768 – 12 December 1770
Monarch	George III
Prime Minister	The Duke of Grafton Lord North
Preceded by	The Earl of Shelburne
Succeeded by	The Earl of Rochford
Lord Lieutenant of Ireland
In office 5 June 1765 – 7 August 1765
Monarch	George III
Preceded by	The Earl of Northumberland
Succeeded by	The Earl of Hertford
Personal details
Born	The Hon. Thomas Thynne 13 September 1734
Died	19 November 1796(1796-11-19) (aged 62) St George Hanover Square, Westminster, Middlesex, England
Political party	Tory
Spouse	Lady Elizabeth Bentinck ​ ​ (m. 1759)​
Children	6, including: Thomas Thynne, 2nd Marquess of Bath George Thynne, 2nd Baron Carteret
Parents	Thomas Thynne, 2nd Viscount Weymouth Louisa Carteret
Residence	Longleat
Alma mater	St John's College, Cambridge
Occupation	Politician

Thomas Thynne, 1st Marquess of Bath, KG, PC (13 September 1734 – 19 November 1796), of Longleat in Wiltshire, was a British politician who held office under King George III. He served as Southern Secretary, Northern Secretary and Lord Lieutenant of Ireland. Between 1751 and 1789, he was known as the 3rd Viscount Weymouth. He is possibly best known for his role in the Falklands Crisis of 1770.