There's a baptism in Stock on 23rd March 1834 for a William Barnes, son of Joseph and Sarah. Joseph's occupation is given as a farmer and their place of residence is Ramsden Crays.
I also spotted a baptism for a Sarah Barnes on 20th June 1830. Again, it's Joseph and Sarah of Ramsden Crays, although at that point he is only a labourer.
This ties in with your Ramsden Crays/Stock connection and the banns of marriage in 1829.
With a marriage in 1829 I think it's very unlikely that Sarah was born in 1816 though. She'd have been too young to marry in 1829 even for those times.