Hi Hilary,
The only searchable index is on Findmypast but combined with general marriages. I have just taken out a subscription, mainly because they have images of Cheshire parish records. You can search the index for free but you can't see the full details - e.g. the bond reference and spouse.
However, there is a clue in the results. If there are two marriages listed, and one has a birth date, that is the marriage bond. This is the one that I have just sent for and the one for Mary Momby. Unfortunately, you need to pay for some credits to get the details and Mary has no birth date, in which case, you might need to look at both, although the bond is usually the first one.
WILKINSON Charles 1764 1737 Spalding Lincolnshire
WILKINSON Charles 1764 Spalding Lincolnshire
MOMBY Mary 1765 Lutton Lincolnshire
MOMBY Mary 1765 Lutton Lincolnshire
Also found:-
WALLETT Ann 1779 1755 Long Sutton - to Henry Jenkin
WALLETT Charlotte 1801 1780 Sutton - to Robert Lindley
WALLETT Edward 1802 1776 Holbeach - to Mary Paxton
WALLETT Elizabeth 1802 1783 Sutton St Mary - to Thomas Garner
Quite a lot of Mumbys, including:-
MUMBY Ann 1764 1742 Somersby - to Burton Rayner
MUMBY Caroline 1820 1797 Sutton St Mary - to Francis Buckles
MUMBY Elizabeth 1837 1818 Sutton St Mary - to John Sturgess
Regards,
David