Sorry for the delay, Cathy. Evidently Ancestry has made some policy changes. I used to get notifications when anyone responded to one of my messages but not any more.
As for your gr-grandfather, Last I knew of him was from the 1900 Lauderdale County TN Census. It not being my direct branch, I'd not heard that he might have been a Circuit Methodist minister, but it is entirely possible as a lot of those I know from Giles County were. I know the LDS has church records of Lauderdale County for the Baptists, but not the Methodists.
I am sorry but I haven't found out when/where/how he died or where he is buried.