Hello Katie; The notes of some show John D. and Margaret buried in Logan Co..Many cemetery records for Logan Co. are online and I have looked at all of them.I also went to Huber Cemetery where Martha Louisa Swank, one of John's daughters who married Noah Shultz is buried. John's son Luther Perry Swank is in Greenwood Cem.. Both are near DeGraff in Logan Co.. Margaret Is bured in Bethel Cemetery near Union Oh.Next to her is Louis William, her youngest son. Grant and Willis Swank, Levi Spitler, Daniel Rienhart,Sarah's father are all there. Next to Margaret are a few unmarked graves. I have written to the cemetery board to see if they have any record of John D. Swank.All of Grant's children are there .Mary Ellen Spitler's brother and sister, Bertha and Clerance are there. I'll follow up with the cemetery board.Elmer Swank Jr.