Thomas Hamilton, 7th Earl of Haddington

Thomas Hamilton, 7th Earl of Haddington (1721 – 19 May 1794) was a Scottish nobleman.

Haddington matriculated at St Mary Hall, Oxford on 30 April 1737[2] and travelled widely on the continent, residing at Rome and later Geneva, where he became part of what was known as the "Common room" involving Benjamin Stillingfleet amongst others.

[3] Haddington returned to Scotland by 1744 but did not greatly participate in public life.

Firstly on 28 October 1750 to Mary Lloyd (d. 1785), widow of Gresham Lloyd and daughter to Rowland Holt of Redgrave Hall, Suffolk.

Mary Lloyd had a daughter, also Mary, who would wed John Leslie, 10th Earl of Rothes, Haddington's father's first cousin.