The Martin brothers were John Aaron Martin (born 5 June 1819) and Richard Martin (born 5 January 1821). They were born in London, the sons of Richard Martin and his wife Sarah (who was the daughter of Aaron Hatfield). Richard Sen. was a jeweller, hardwareman, and silversmith in Falcon Court, Fleet Street. By 1849, John and Richard Jun. had formed a partnership with James Naylor, a Sheffield cutlery manufacturer. The firm took over the silver business of Aaron Hatfield in Pepper Alley. Martin Bros....