Born: 1715, 30th December.
Place of Birth:
Died: 1746, 26 February of Smallpox, at Rockingham Castle. Buried 11th March, at Rockingham Church, Northamptonshire.
Parents: Lewis Watson 1st Earl of Rockingham and Catherine Sondes, daughter of George Sondes, 1st Earl Faversham.
Marriages: None.
Children: None.
Occupation: Politician.
Notes: Thomas entered Eton College in 1725 and Lincoln's Inn in 1732. He stood in the 1741 General Election and ousted Sir Thomas Hales as MP for Canterbury.
Represented Canterbury in the House of Commons and was appointed Lord Lieutenant of Kent. His tenure as an MP terminated on succeeding his brother Lewis, as 3rd Earl of Rockingham.
Thomas's death, brought an end to the male line of the Watson's at Rockingham, together with the Viscountcy of Sondes, and Barony of Throwley. He was succeeded as Baron Rockingham by Thomas Watson-Wentworth, 1st Earl of Malton, his first cousin once removed. He left his estate to his first cousin Lewis Monson, who adopted the name Watson.