I've just looked on that Lancashire Parish Records Online, it's really helpful!
No firm evidence, but assuming the surname of HAMER for Jane (thank you for the post about that above), her parents were John and Hannah. These names seem to fit the family with John and Hannah being children of Jane and John Isherwood also.
Bennett's parents could possibly be Thomas and Nancy.
Jane and Bennett appear to be the same age on the 1841 census, so these parents seem to fit that with both 'children' being born in 1810 which would fit.