Using The Search Form (General)
Anne
No - I haven't research this before
Apart from checking the Gloucestershire Baptism Index CD from 1813.
FOD records
I just went through the baptism around that time - if you put the sign % (possibly with V%) in the surname box (this is listed under : Using The Search Form - Search Tips)- with christian name FANNY - this comes up with all the baptisms for that year, or either side plus/minus how ever many years you want to cover.