James and Eliza married in 1848.
Presumably these are the James Steer Jennngs and the Eliza Ann Hill?
Whereabout is all this taking place?
Seems like you have earlier info already, as you have these people's parents and their marriages.
For later info - what have you got already? Have you found the family in any censuses?
We are happy to help you look, but don't want to spend time going over old ground and looking for info you already have.