Genuki has this:
"NEWDIGATE, a parish in the second division of Copthorne hundred, county Surrey, 5,q, miles S. by E. of Dorking, its post town."
So I wonder if this may be a possibility?:
Joseph Humphery b 2 Jun 1798, chr 16 Dec 1798
West Street Independent, Dorking, Surrey
father Joseph Humphery
mother Sarah