Send a message to the person who requested a photo of the grave monument of George Roebuck with the following comment:
George was my great-great-grandfather, and forms part of a book on our family history which I hope to publish within the next couple of years. I did visit Otley a few years ago - but didn't know where his tomb was (and was short of time!) I live in Hampshire and my wife is not well so I can't get about much these days. Good luck in your work!