George Graham, 1673-1715; a pre-eminent clockmaker and Fellow of the Royal Society. Apprenticed in July 1688 to Henry Aske her was freed in 1695 and immediately transfered to Tompion's workshops. In 1704 he married Tompion's niece Elizabeth. He took over the business on Tompion's death in 1713 and removed to the 'Dial and One Crown' in 1720. Graham is credited with several inventions including the deadbeat escapement in 1713, the mercury pendulum and cylinder escapement in 1726.