Just had a look in the churchyard a few mins ago. Well, they've given up on maintaining it. Weeds are 5 foot high. I remember the churchwarden saying the council had taken over the maintenance of the churchyard. So cut backs in action.
The west wall is still part accessible, just.
Granite stones are not that common so this (below) enormous block could be part of it. Gray granite, about 4' and a 1' thick. No inscription visible. It has been plonked on top of, and obscuring the inscription of another stone, but the bottom stone is of a different material.