Send a message to the person who requested a photo of the grave monument of Alexander Black with the following comment:
I am a descendant of Alexander Black and Catherine Black (nee Campbell) The family were living at 23 Low Street in the 1851 census. The children were John, William, Jean, Flora and Thomas. I am a direct descendant of Thomas who settled in Gayndah in Queensland Australia. The names on the gravestone have all been used in my family, I think I might be related.