Hi,
Remembering that ages were rounded down in 1841 this could be James and Jemima,
1841 HO107/337/1 f.4 p.2 Ashingdon Essex
James RAINER 25 Ag Lab
Jemima " 15
Wll " 3mths
All born in county.
Birth
William RAYNER Jun Q 1841 Rochford 12 185
mmn: SMEE
William is living with his SMEE Grandparents in 1851.
I can't see them anywhere in 1851 so I wonder if they are living in one of the 1851 missing pieces from Essex?
Regards,
Daisy