Send a message to the person who requested a photo of the grave monument of Thomas King with the following comment:
I believe this Thomas King is my great-great-grandfather. He had a son, Thomas King. I believe the son is my great-grandfather, Thomas, and I have just requested that grave stone image as well. My grandfather, William King, was born in 1876 so all the dates make it reasonable that this is my line. On my grandfather's death certificate his father and mother are listed as Thomas and Margaret King.