If you haven't tried Cornforth, rather than Cornworth, I would give it a shot. There may just be a name variation.
You migth want to try familysearch.org - free on line genealogy tool that is searchable by plugging in names/dates/locations at: https://familysearch.org/.
Are you looking for parents? Descendants? Did they stay in England?
It may be difficult forsomeone to give additional assistance without further information on this couple.
Good Luck
