Send a message to the person who requested a photo of the grave monument of Douglas McCaskill with the following comment:
Only just discovered that this relates to my father. Whilst I was aware of his death, his wife never made any attempts to inform me of the funeral or his burial at the time and therefore I would be grateful if you could send me a copy of this photograph. Feel free to include this reply under the request and happy for my details to be passed to the previous request to see if any reply is made.