If you can't find please ask them they are always willing to help.
If they don't have it, they will check and see who does
Had a reply from the Norfolk Records Office, "The marriage licence bonds for that period are indexed and I am afraid that I cannot find one for Michael Dalton and Mary Beales. There are also no licences of that date in the parish collection."
Well at least I know now that around the time of booking the church and the marriage day both were living in St Mary in the Marsh, Norwich.
I do know that Michael Dalton was baptised in North Walsham, Norfolk 28 Dec 1732 and was buried in Great Ellingham 23 Jun 1811, if he was a Blacksmith like his son and grandson, both named Michael, and not bound to one employer he could have lived in several parishes prior to marrying Mary Beales.
Michael's wife Mary nee Beales was buried, as far as I can make out, 16 Dec 1776 at Great Ellingham.
Currently I'm inclined to favour three Mary Beales as the wife of Michael Dalton.
Mary Beal baptised 6 Mar 1736 at Norwich, daughter of John & Helen.
Mary Bale baptised 1736 at Norwich, daughter of Robert & Susan.
Mary Beale baptised 7 Jul 1739 at Norwich, daughter of Simon & Mary (nee Drayns).
Unfortunately the only child of Michael and Mary Dalton to have a first name the same as any of the three sets of parents above is named John, not much help.
I have checked the families of Michael's son and grandson but there is not a naming pattern to help identify the parents of Mary Beales, it seems my Daltons didn't bother following naming patterns.