I don't know if anyone out there can help - I've pretty much found all of the census records as well as BMD for my g-g-grandfather James Jonathan Christmas except for the 1851 census.
I have tried everything I can think of, including name variants, to no avail.

The following is what I’ve managed to find:
Born 7th March 1825 Blackfriars, Middlesex
Baptised at St Sepulchres 9th March 1825
1841 census – aged 16; occupation chaser
28th September 1854 married to Emily Davis at Clerkenwell Registry Office (gave his age as 27) occupation silversmith. Address: 7 Goswell Terrace, Goswell Road
1861 census – aged 36. Silverchaser. Address: 38 Euston Street, St Leonards, Shoreditch
1871 census – aged 40. Silverchaser. Bethnal Green
1881 census – aged 54. Silverchaser (goldsmith). Now living in Frome, Somerset.
Died 21st Sept 1887 in Frome. Buried on 26th in dissenters cemetery Vallis Road, Frome
Any help or suggestions would be most welcome