I'm no expert, Mike, I only wish I could help.
The furthest I got back with OH's ancestors was a couple who married in Norwich (online record gives no parish) in 1709. They moved to a village where they proceeded to have 10 children, baptisms clearly recorded, AND maiden name of the mother. But can I find her or her husband being baptised anywhere?

Their surnames are common for Norfolk, as is yours, so I have lots of possibles but none with the exact first names!!!
So I feel your pain, as they say! Any earlier records are just guesswork, I've recorded it as such and am happy to have got back as far as I have. But if only.....
I wish you luck!
Pat