Jeffery Webb and Mary Ellis are my great x 7 grandparents. I found their marriage today by chance in the "London, England, Clandestine Marriage and Baptism Registers, 1667-1754" collection on Ancestry.co.uk.
I think the reason they married there is something to do with the fact that Jeffery's first wife, Jane, died around the same time. The burial record gives a date of 23 Feb 1737. Jeffery's marriage to Mary took place on "12 Feb 1737-8" (so I'm not sure if it took place before Jane was buried, or the year after) at "Mr Lillys The Fleet". There are two documents recording the marriage, and in one Jeffery is clearly called a widower (and gives his occupation, husbandman), and both were from "Rye-gate"/"Rigate".
I can't find a baptism for Jeffery in Reigate, though there is a very good possibility a few miles away in Betchworth in 1711, son of Elizabeth Webb.