A few bits and pieces that are hopefully relevant-
1851 census - Stamp family in Stanstead Abbots
John STAMP (58),
- his wife Jane (57) plus children Jonathan (22), Ann Maria (18) & Isabella (16)
- all born Ware
1852: Ann Maria Stamp married James Bardell
(Think her brother Jonathan married at the same time)
1861 census: John Stamp(70) and his wife Jane (68) are lodgers in Baldock St Ware
1865 Jane Stamp (73) buried Ware 5 Feb 1865 (of Watton Road Ware)
1871 Census: Jonathan Stamp is with Ann Maria & her husband James Bardell in Ware
1876 John Stamp (86) buried Ware 20 Feb 1876 (of Watton Road Ware)
After all that I still haven't found a marriage for John/Jonathan Stamp & Jane
A possibility:
John Stamp married Jane Clark 20 Nov 1818 Tottenham MSX
Couldn't see a marriage in St Mary's Ware PR's