| PACKET | NAME | DATE |
| 13332 | O' Bryant, John W. | |
| 13060 | O' Meara, Mary E. | |
| 13396 | O' Toole, Jane M. | |
| 01048 | Oakerson, John | 8/12/1871 |
| 10031 | Oakman, Carl S. | 7/18/1930 |
| 12396 | Oakman, Carl S. (Guardianship of Heir) | |
| 06736 | Oard, James | 11/9/1916 |
| 09306 | Obley, Dora | 11/4/1925 |
| 01186 | O'Briant, William | 9/22/1871 |
| 08665 | O'Brien, William | 1/16/1924 |
| 06849 | O'Brien, William | 7/8/1917 |
| 05375 | O'Bryant, David (Guardianship of Heir) | 4/4/1899 |
| 06340 | O'Bryant, George W. | 6/4/32 |
| 13696 | O'Bryant, John Daniel | |
| 13618 | O'Bryant, John Daniel (Guardianship) | |
| 03667 | Ocker, John | 12/5/1895 |
| 07250 | O'Connell, Anna | 7/17/1911 |
| 06970 | O'Connell, Emma (Guardianship of Heirs) | 6/12/1911 |
| 06112 | O'Connell, William M. | 10/29/1928 |
| 11088 | O'Day, Catherine | |
| 10956 | O'Day, Catherine V. Clarke | |
| 01258 | Odle, John | 12/13/1876 |
| 07596 | Odle, John W. | 8/13/1920 |
| 11614 | Odle, John W. | |
| 04595 | Odle, Rachael | 2/27/1907 |
| 04779 | Odle, Rachael | 4/4/1908 |
| 09126 | O'Donal, Charles W. | 3/2/1920 |
| 10441 | O'Donnell, Elizabeth | |
| 08870 | Oelshlager, Christian | 4/21/1927 |
| 06189 | Offeldinger, Albert | 6/16/32 |
| 12716 | Offill, Jasper | |
| 01519 | Offterdinger, August | 11/30/1878 |
| 03224 | Offterdinger, Hannah M. | 11/21/1895 |
| 02006 | Offterdinger, John N. | 10/9/1885 |
| 04123 | Offterdinger, John N. (Guardianship of Heirs) | 8/26/1886 |
| 11985 | Offterdinger, Maud | |
| 07609 | O'Geese, Charles | 03/07/1919 |
| 03042 | Ogle, Charles A. | 1/19/1893 |
| 01561 | Ogle, David | 2/28/1879 |
| 03477 | Ogle, Eli | 2/19/1901 |
| 06760 | Ogle, Elijah | 12/27/1916 |
| 03980 | Ogle, Elisha | 3/12/1901 |
| 01854 | Ogle, Elisha | 8/11/1880 |
| 02438 | Ogle, Elisha (Guardianship) | 12/16/1880 |
| 04677 | Ogle, Emma (Guardianship of Heirs) | 11/1/1904 |
| 00784 | Ogle, James | 12/2/1862 |
| 01405 | Ogle, James (Guardianship of Heirs) | 4/15/1865 |
| 04276 | Ogle, James B. | 2/5/1904 |
| 05340 | Ogle, James B. (Guardianship of Heirs) | 11/23/1901 |
| 11144 | Ogle, Jane | |
| 11157 | Ogle, Nancy | |
| 09719 | Ogle, Pearl B. | 10/11/1928 |
| 05546 | Ogle, Zillah A. | 6/24/1913 |
| 10398 | O'Harra, Florence S. (Guardianship of Heir) | 3/10/1931 |
| 04394 | O'Harra, John E. | 11/28/1905 |
| 11135 | O'Harra, Lou C. | |
| 13565-A | O'Harra, Lou C. (1 of 3) (See Additons, Box 1, at end of probate, for folder 3) | |
| 13565-B | O'Harra, Lou C. (2 of 3) | |
| 09400 | O'Harra, William | 6/15/1927 |
| 13505 | Oland, Robert E. | |
| 10917 | Oland, Thomas C. | |
| 05301 | Olin, Allen H. | 12/10/1908 |
| 07505A | Olin, Malissa | 1912 |
| 08616 | Olin, Melissa (Guardianship of Hiers) | 4/27/1925 |
| 03509 | Oliphant, Rebecca | 11/1/1899 |
| 03201 | Oliphat, Martha B. | 4/2/1896 |
| 13408 | Oliver, Dora Delphine | |
| 13834 | Oliver, Elizabeth | |
| 04059 | Oliver, George (Guardianship) | 2/19/1901 |
| 13095 | Oliver, Hazel | |
| 02525 | Ollom, James | 4/6/1865 |
| 00656 | Ollom, James | 1888 |
| 02071 | Ollom, James | 1/5/1881 |
| 03395 | Ollom, James (Guardianship of Heirs) | 3/8/1889 |
| 02237 | Ollom, James (Guardianship of Heirs) | 5/20/1865 |
| 01058 | Ollom, Sarah | 12/22/1869 |
| 00812 | Ollum, Peter | 5/24/1873 |
| 08690 | Olmetzer, Josephine B. (Guardianship of Heirs) | 1922 |
| 14066 | Olsen, Edward | |
| 12712 | Olvey, Edman E. | |
| 13895 | Olvey, Minnie M. | |
| 10417 | O'Meara, Dora G. | |
| 07271 | O'Meara, Henry F. | 11/12/1912 |
| 01866 | O'Neal, Emma (Guardianship) | 12/24/1877 |
| 01028 | O'Neal, Joseph | 10/30/1871 |
| 01585 | O'Neal, Lemuel E. | 12/24/1877 |
| 00571 | O'Neal, William | 6/10/1864 |
| 05057 | O'Neil, Johanna (Guardianship of Heirs) | 1/29/1890 |
| 07021 | O'Neil, Josephine | 10/18/1918 |
| 10141 | O'Neil, Mary | 7/26/1934 |
| 07236 | O'Neil, Thomas | |
| 05392 | O'Neill, Daniel G. | 6/2/1913 |
| 08267 | O'Neill, John | 2/18/1924 |
| 07752 | Orebaugh, David | 3/4/1921 |
| 11284 | Orebaugh, Samuel D. | |
| 07719 | Orman, Mildred J. (Guardianship) | 5/28/1921 |
| 07793 | Orr, David F. | 8/17/1922 |
| 05817 | Orr, David P. | 5/10/1906 |
| 09018 | Orr, George T. | 26/12/1928 |
| 09730 | Orr, George T. | 5/21/1929 |
| 06546 | Orr, Harry | 4/9/1928 |
| 03264 | Orr, James | 3/15/1895 |
| 02823 | Orr, James H. | 10/17/1887 |
| 04579 | Orr, James H. | 3/30/1891 |
| 00507 | Orr, James H. | 1907 |
| 01831 | Orr, Jane E. | 9/3/1872 |
| 01830 | Orr, Joseph | 4/9/1881 |
| 02770 | Orr, Joseph J. | 12/9/1886 |
| 03251 | Orr, Joseph J. (Guardianship of Heir) | 5/5/1886 |
| 07936 | Orr, Joseph N. (Partnership) | 1912 |
| 02822 | Orr, Julia E. (Guardianship) | 1/29/1867 |
| 04455 | Orr, Martha Jane | 4/16/1907 |
| 05125 | Orr, Martha Jane (Guardianship of Heir) | 12/13/1906 |
| 12329 | Orr, Martha Jane (Guardianship of Heir) | |
| 02771 | Orr, Mary | 9/4/1885 |
| 13118 | Orr, Mary L. | |
| 12825 | Orr, Robert W.; Mary Branham (2 folders) (See Additions Box 2 at the end probate) | |
| 01653 | Orr, Samuel | 12/7/1876 |
| 03265 | Orr, William | 1/26/1890 |
| 00523 | Orr, William | 5/21/1867 |
| 02416 | Orr, William (Guardianship) | 10/2/1885 |
| 07113 | Orr, William W. | 7/31/1919 |
| 11248 | Orrick, Oscar | |
| 11249 | Orrick, Willie B. | |
| 06462 | Osborn, Alma Lena | 11/12/31 |
| 07095 | Osborn, Frank E. | 3/27/1919 |
| 00321 | Osborn, Lewis W. | 2/13/1850 |
| 02481 | Osborn, Ruth B. | 2/17/1887 |
| 03664 | Osborn, Sophia | 9/1/1897 |
| 09439 | Osborne, Attie | 3/8/1926 |
| 01722 | Osborne, Benjamin F. (Guardianship) | 4/5/1881 |
| 01122 | Osborne, David (Guardianship of Heirs) | 5/22/1869 |
| 10249 | Osborne, George R. | 5/10/1934 |
| 09846 | Osborne, James W. | 9/4/1930 |
| 07057 | Osborne, James W. (Guardianship) | 9/24/1918 |
| 09850 | Osborne, James W.(Guardianship) | 7/1929 |
| 13111 | Osborne, John W. | |
| 11660 | Osborne, Sanford T. | |
| 13510 | Osenbaugh, Lula M. | |
| 08233 | Osenbaugh, Mary E. | 12/4/1923 |
| 09459 | Osman, Mary E. | 7/1/1929 |
| 04053 | Overholt, Sarah E. | 10/5/1897 |
| 05310 | Overholt, Sarah E. | 11/12/1901 |
| 08130 | Overman, Joseph W. | 10/13/1923 |
| 08441 | Oves, Linda M. | 1925 |
| 05700 | Ovinger, Margaret | 6/3/1911 |
| 09004 | Owen, Alexander | 20/3/1913 |
| 08429 | Owen, Dora May (Guardianship) | 8/26/1925 |
| 12664-A | Owen, Mary M. | |
| 13435 | Owens, James (Guardianship) | |
| 09163 | Owens, James W. | 16/7/1921 |
| 07785 | Owens, Mary H. (Guardianship of Heir) | 6/11/1920 |
| 07827 | Owens, Owen W. | 2/15/1921 |
| 05893 | Owens, Owen W. (Gurdianship of Heir) | 1/11/1923 |
| 10475 | Owens, Rebecca | 1935 |
| 09075 | Owens, Reuben B. | 1/5/1925 |
| 00759 | Owings, Richard | 4/24/1855 |
| 12786 | Oxley, Allen | |
| 07715 | Oxley, Edith (Guardiandship of Heir ) | 8/21/1917 |
| 00929 | Oxley, Eli (Guardianship of Heirs) | 5/5/1866 |
| 12958 | Oxley, Eliza J. | |
| 10353 | Oxley, Jerry | 6/7/1935 |
| 02175 | Oxley, Kesiah (Guardianship) | 1875 |
| 02948 | Oxley, Keziah L. (Guardianship of Heir) | 2/16/1876 |
| 07206 | Oxley, Lawrence | 1/30/1918 |
| 08678 | Oxley, Lawrence (Guardianship of Heirs) | 8/17/1922 |
| 10964 | Oxley, Peter | |
| 04297 | Oxley, Philip D. | 2/20/1905 |
| 10124 | Oxley, Sarah J. | 2/27/1934 |
| 05349 | Oxley, Sarah L. (Guardianship of Heir) | 10/1/1904 |