Thank you Brian
With the two christenings it could be possible that one was catholic and the other c of e.
As for being married twice, I have found a marriage on the IGI of John Chapman and Mary Sandhurst at Bradden on 23 Feb 1851. He was born in about 1831 so it could be him. I cannot find any children or any other details about Mary. Do you know if she appears on the 1861 census?
Thank you once again
Eric Price