Certainly from around 1711 it was George Graham who was in partnership with Tompion. He later married Tompion's niece, Elizabeth Tompion. Thomas Tompion, Benjamin Lewis Vulliamy, John Ellicott and William Carpenter. Later the same year, Thomas Tompion, the most prominent British clockmaker, was making them too. Immaculately bred, Tompion was the son of the Hall of Fame horse Tom Fool.