Who is Filler? Find A Grave lists plenty of Fillers in Ohio, but none in Delaware County. Delaware County Burials lists two Filler burials at Oak Grove:
February 26, 1846–January 21, 1940
William Simmons Filler
1845–June 15, 1899
FamilySearch.org reveals that William and Hester Ann were, as you might expect, husband and wife. A William S. Filler from Ohio was a sergeant during the Civil War. The 1870 census lists his name as Will and shows they had two children, both girls, at the time. The 1880 census lists Will’s occupation as railroad conductor and shows three children. Hester, long widowed, died in Livington, Texas at the age of 93.
Other than those small facts quickly discovered on FamilySearch.org, what do we know? I don’t know exactly, but I expect that Will and Hester are someone’s ancestors. Not mine, but perhaps yours?