Well I had a little walk down and it's really overgrown now. Took some trekking through, but to be honest I found it more interesting than I thought it would be. I took some pics that may be of interest to look at and yes I found the iron gravestone (took me a while
) unfortunately you can no longer read anything on it as you can probably see yourself from the pics.
pic 3 - was prob the oldest legible one I found, and pics 4, 5 & 6 are of the iron one, is that the one you were talking about big al??