Thomas Drury Smeaton (c. 1831 – 18 February 1908) trained in England as an engineer, emigrated to the British colony of South Australia, where he was known as a banker and amateur scientist.
Thomas Smeaton was born in London "within sound of Bow Bells", and trained as an engineer.
Smeaton was a well-read man, both of literature and scientific subjects, of which he had a wide knowledge and great enthusiasm.
Jane Witt ( – 13 May 1920); their children included: There is no evidence of his being closely related to the South Australian politician Thomas Hyland Smeaton.
Miss Matilda Witt (c. 1830 – 9 January 1930), Mrs Smeaton's sister, lived with them at "Dalebank", Blakiston, afterwards at Nairne.