This cemetery near Windsor Mills is haunted by the eldest sister of the McAdams family, whose tiny headstones stand in a row, the dates a testimony to their slow murder. The mother of the family died, leaving the sister to care for all twelve McAdams children. But Sis didn't want kids, so she poisoned them one by one, "enjoying their nursing until death." Which might be the creepiest thing I've ever heard.
Gerrick, David J. Ohio's Ghostly Greats. Dayton: Dayton Press, 1982. pp. 9-10.