Send a message to the person who requested a photo of the grave monument of Charles Forbes Davidson with the following comment:
I am researching the family of Andrew Davidson of White Cairns (advocate of Aberdeen), who was my 4th great grandfather, and I believe Charles Forbes Davidson to have been one of his sons. I'd like to see the actual photograph pf the gravestone, to see if it provides any additional information, and to check the age of one of his sons.