Find Ancestors

Recently I visited the grave of my gt gt grandfather James Chipperfield but I got a bonus because his parents were buried in front of him, John & Mary.
The graves are at a small villiage in Norfolk called Skeyton. It was always talked about in the family because James is buried in the same grave as five of his children. They all died of diphtheria in the august of 1871.
The problem is I cant find the maiden name of his mother. There are others with them on their trees but they all have the wrong date of birth for John & even worse they have the wrong marriage date too. This is because there is a John Chipperfield who married a Mary Lummis in 1808 but it would mean that Mary would have only been 9 at the time. John was older & born in 1789. I know John & Marys true dates of birth because I have seen their graves but how do I go about finding their marriage date & Marys maiden name.
Please, please, if anyone could help me, I would be most grateful.