| Name | Birth date | Death date |
|---|---|---|
| Oliver, Faye Louise | January 14, 1942 | January 18, 1942 |
| Oliver, Glen A. | Bef. 1895 | Unknown |
| Oliver, Living | Private | |
| Oliver, Living | Private | |
| Oliver, Living | Private | |
| Olson, Living | Private | |
| Olson, Living | Private | |
| Olson, Living | Private | |
| Olson, Living | Private | |
| Olson, Living | Private | |
| Olson, Living | Private | |
| Olszta, Richard | Unknown | Unknown |
| Omasta, ??? | Unknown | Unknown |
| O'Neal, ? | Private | |
| O'Neal, Kaitlinn McCall | Private | |
| O'Neal, Kyleigh Marie | Private | |
| O'Neal, Robert | Private | |
| O'Neal, Ronie | Private | |
| O'Neal, Seth Tyler | Private | |
| Orwig, Eric | Private | |
| Orwig, Kyle | Private | |
| Orwig, Patrick | Private | |
| Orwig, Ryan | Private | |
| Osborn, Mahala | Unknown | |
| O'Shea, Daniel | Unknown | |
| O'Sullivan, Harriett A. | Abt. 1897 | Unknown |
| O'Sullivan, J. J. | Unknown | Unknown |
| Otts, Living | Private | |
| Overholt, Nancy Clara | April 30, 1868 | May 21, 1964 |
| Overholt, Reuben Edward | 1838 | 1935 |
| Owens, Mary | Unknown | Unknown |
| Owens, Suzie | Unknown | Unknown |
| Painter, Living | Private | |
| Painter, Living | Private | |
| Painter, Living | Private | |
| Painter, Lloyd | Unknown | |
| Palkovic, Carleen Susan | Private | |
| Palmer, Carl | Private | |
| Palmer, David Scott | Private | |
| Palmer, Emmaline Frances | January 25, 1879 | Unknown |
| Palmer, John Robert | Abt. 1850 | Unknown |
| Palmer, Joseph | Unknown | Unknown |
| Palmer, Living | Private | |
| Palmer, Mark Scott | Private | |
| Palmer, Pamela Sue | Private | |
| Palmer, Temple | Private | |
| Paolantonio, Alesandro | November 10, 1839 | Unknown |
| Paolantonio, Anna Rosa | March 04, 1829 | March 30, 1836 |
| Paolantonio, Antonia Reginalda | Unknown | Unknown |
| Paolantonio, Camillo | Abt. 1812 | Unknown |