Wow Graham, now don't go getting a hernia - that stone's very heavy!
I can confirm to all that Graham wanted to be 100% sure, he had the plan of the graveyard and we had checked the names on the stones on either side of Roberts so that both of us agreed that it was the right one, although I can understand there would be just that niggling tiny doubt until he had seen it for himself.
Sorry no pic of the Burial Register yet, camera link is attached to son's computer and although downloaded it needs to be resized to upload here, I will do it as soon as I get a little time. As yet I can't even confirm that it's any clearer than the one you already have.
Mary