Dear George,
Hope you had a good day, even if you couldn't find any Sheen's buried at SG !! I had hoped that perhaps William and Hannah might have had a headstone, as he did leave a will when he died in 1813, but as we all know, headstones did cost a lot and weren't available to most families. Thanks for letting me know of your searches, hopefully you'll have success with other families, I'll let you know if I find any other Sheen references or discoveries in the future.
Regards
Colin