Who was Silas P. Todd

We have researched the Todd's that lived in both Boone and Hendricks County Indiana.  It seems the only Silas P. Todd found is that of a son of James T Todd born 1818 in Indiana and a Jane Sawyer born in Indiana in 1822.   At the Cemetery the stone that was south of Silas and two stones north of Silas were also Todd, even though these stones are not found on the often used Find A Grave website.    We will give a extended account of the Todd Family when we have all the stones transcribed.