Thomas Smith of Northamptonshire, England - his son Joseph
Looking at the info you send about Joseph Smith the son of Thomas Smith and Eliza Read
having been christening on 16 Oct 1842 at Wicken [per igi]
his parents got married in April, May or June of 1842
HE WAS living with his grandparents, George Read and Mary Read in 1851 at Wicken.
although his parents had 3 other children after him and they were living WITH the parents
in 1861 was an apprentice living with another family.
and in 1861 his parents have even more children that were all living with them
PERHAPS the fact that the mother was pregnant BEFORE marriage - but married before the BIRTH had something to do with the living arrangement for Joseph???
just a thought, I am sure there is no way we could ever PROVE this...