From The Arthur Conan Doyle Encyclopedia
In the Sherlock Holmes stories
Mr. Hardy was the foreman in the plumbering business of Mrs. Sutherland.
- Mr. Sutherland was a plumber in the Tottenham Court Road, and he left a tidy business behind him, which Mrs. Sutherland carried on with Mr. Hardy, the foreman, but when James Windibank came he made her sell the business, for he was very superior, being a traveller in wines. (IDEN, 68)