I'm Emily Hartzell and I think that it's my family you are looking for. Glenn A Hartzell is my great-grandfather and Walter G Hartzell is my grandfather. He married Maxine Hartzell (McGayhey) and had two children, Jerry (my father) and Joetta (last name now Vore).
Glenn and Walter are buried at Mt. Zion Cememtery in Jay County, IN.
Let me know if you want any more information!