Send a message to the person who requested a photo of the grave monument of William Turnbull with the following comment:
I am tracing descendants of Capt. William Turnbull (1788 - Bet.1851-1861)and his wife Harriet Banfield (1801 - 1869). I am pretty sure William Turnbull (1859 - ?) is their grandson. Image may well help with my research.