My grandfather (Thomas Mendenhall, b. 1918-this birth year is actually incorrect) and great-grandparent (Clara Borger and John Mendenhall) are on your list. I believe they lived in Auglaize County, which, if I'm not mistaken, is just North and East of Darke County. I can probably fill in gaps in the family tree for Tom and his sister Mary. Also, my grandfather is still alive, but no longer lives in Ohio.