Send a message to the person who requested a photo of the grave monument of Isabella Pemberton with the following comment:
I am researching my family tree and have an Isabella Pemberton (nee Walker) and Thomas H Pemberton as great grandparents. Unfortunately I have been reasonably unsuccessful in finding out much information on them so far as they seem a bit elusive. This grave may be a false lead as they were actually from Durham but it is worth a shot. It's great that you have this service! I bet it has proven extremely helpful to people such as myself who are researching their past relatives. Many thanks, Liz