Hi, Wanda.
Don't know if were related or not. But thought I'd send you a message regarding your great-grandfather.
My great-great grandfather was James P. Tharp. He was born on 3 Mar 1844 in Salt River Township, Audrain Co., Missouri which is close to Callaway Co., MO (Fulton is the county seat).
James P. Tharp married Susan Helm on 7 Jan 1869. They had ten children.
Do you know your great-grandfather's parents or siblings? Have always been told that we had Indian blood in our background, but have yet to prove it! I believe my Tharps probably originated in KY.