| Decedent Name | Book & Page | Date of Will | Date Filed | Executor | Heirs/Relatives Mentioned in Will | Comments |
|---|
| O'Connell, Mary | C 185-186 | April 29, 1891 | June 9, 1891 | not stated | widower John; son Jerry; daughters Mary and Maggie O'Connell and Anna Hobbs; deceased daughter Nellie | |
| Oler, Henry | C 30-31 | May 16, 1888 | June 20, 1888 | James M. Oler | widow Elizabeth; sons John W., Charles W., Martin L. and James M.; daughters Martha A. and Jennetta B. | |
| Overholser, Joseph | C 227-228 | April 20, 1888 | Nov. 11, 1891 | Jacob C. McFarland | sons Martin, George, Daniel, Jacob, Henry, Levi; daughters Amanda Landis, Mary and Sarah Baker, Elizabeth Ullery and Eliza Bauser | |
| Overmyer, Fanny | C 513-514 | April 29, 1897 | Aug. 3, 1897 | Sylvanus W. Overmyer | sons Sylvanus W. and John H.; daughter Sylvia A. Rannels; deceased daughter Martha A. Burkett | |