No problem; I've been taking enquires on these books for somewhere around 10 years. I'm glad I've been able to help.
There is a Benjamin Simmons listed, but the marriage is to Martha Hood and is later than the marriage you are looking for. 25 December 1800 by William Ellis. The earliest Simmons marriage is for George Simmons who married Purdence Roads 17 April 1783.
Good luck in your search!