Hi Yosemitesam
If you have got that far back, you are doing extremely well.
I have parishes in Wales where I am totally stuck at 1800, as they were lost !!!
I am sure that someone with the right connections will come along and help you, but I suspect that you will need the Local Record office. I am not sure whether you are in the UK or USA from your name.
Good luck with your searches, but it may need a miracle to get back further. Just be patient and see if anyone else local to the area can help you.
Maddie