In Hugh Murrays excellent book on York Goldsmiths there is an entry for Henry Preston:
Son of William and Elizabeth Preston of Easingwold, bricklayer.
Apprenticed to Henry Steward, watchmaker, indenture 7 sept 1829, 7 years, consideration Â£50. (free 23 July 1838)
Silversmith and Jeweller of 8 Parliment St 1844-1882.
One of the original guarantors of the Yorkshire gala, 1858
Director, York Gas Company 1877-1911
Died 15 Jan 1917 aged 101 years 9 months 7 days (amazing!!!)
Hope that helps a bit