John Bumford (son of John) of London. (mark is IB under a fleur de lis) Apprenticed to Thomas Hartwell 1735; free of Gunmaker's Co. and proof piece 1742; Elected assistant 1746; Master 1751, 1756; listed as gunmaker at the Sign of the Golden Blunderbuss, Minories, 1754-59, Minories 1759-68, 8 St. George St, Minories, 1769-1774 (possible all were one address of 8 St George St, Minories, london at the sign of hte Golden Blunderbuss), Contractor to Ordnance, 1756-71, East India Co. 1745-73; Hudson's Bay Co. 1757-75 (viewer 17580-56); died and will proven 1775, Half of estate to son John who was a sail maker. His name and mark are also found on a number of small brass cannon, probably cast for him by his friend Jonanthan Buttall. (Gunsmiths of London, Suppl, Blackmore)