I have had a look between the dates that you supplied at the only Susannah Patmore i can find is:
Susanna Patmore
Christened 26 August 1759 Gilstone, Hertford
Parents: John Patmore, Sarah
There are quite a few Susanna(h) Patmores in Hertford during the 1700's, most are in Much Hadham and Sawbridgeworth, none in Cheshunt.
It might pay you to have a look at
www.familysearch.org if you haven't already done so, after you have searched and gone into the "International Genealogical Index/British Isles" section you can then refine your search by choosing the relevant county.
Hope this is of some help to you