From Arthur G Grimwade, p. 647:
Thomas Ross, son of Bartholomew Ross of Wardour Street, Soho.
Apprenticed to Thomas Rowe of Gutter Lane as silver polisher on 6 August 1794. Free 7 July 1802. His brother, Bartholomew, was apprenticed to him in 1804, when Thomas was of Hooper Street, Clerkenwell.
First mark entered as plateworker on 10 November 1819. Address: 19 Green Street, Leicester Square.
Second mark: 14 February 1821.
Third mark: 11 November 1825.
Moved to 39 Princes Street, Leicester Square on 16 November 1837.