Charles Fox believed to be the son of Charles Fox I. His first mark entered as plate maker ,  signed Charles Fox junr, 19th February 1822. Address 139, Old Street, Second mark, 27 January 1823, Third, 21 August 1823, Fourth 23 September  1823, Firth 10 December 1823. Sixth , 9 May 1839. His work shows consistently high quality . The rapid entry of marks suggests a fairly large establishment with with varying marks used for different categories of work . Fox was perhaps the last individualist plate-worker before the debacle of Victorian mass production