| GROOM SURNAME | GROOM FIRST | BRIDE SURNAME | BRIDE FIRST | YEAR | MONTH/DAY | CLERGY |
| Odell | Jonathan | Alexander | Susann | 1874 | January 7 | Newton Wilson |
| Offit (Offutt) | Thomas | Bursott | Susan S. | 1873 | November 8 | Eld. J. M. Canfield |
| Ogborn | James W. | Griffith | Mary E. | 1916 | January 25 | C. N. McBrayer |
| Ogborn | Samuel | Johnson | Mahaly (Mahala) | 1870 | November 1 | Simon Rammell, JP |
| Ogden | John J. | Lacke | Matilda A. | 1874 | March 30 | F. M. Pavey |
| Ogle | James C. | Holtsclaw | Eva | 1913 | August 20 | Eld. E. W. Thomas |
| O'Hair | James F. | Eastes | Lou E. | 1883 | February 14 | Rev. G. W. Switzer |
| O'Hair | Robert L. | Hufford | Eva | 1881 | May 25 | Urban C. Brewer |
| O'Haver | Pleasant C. | Cooper | Katharine V. | 1915 | June 15 | L. E. Murray |
| Ohmer | Charles C. | Bonham | Nellie | 1874 | July 7 | R. H. Moorhead, JP |
| Oldplugg | L. Howard | Cutstall | Mary Ann | No Information | ||
| Oliphant | Albert G. | Hadley | Martha J. | 1879 | August 3 | Eld. W. M. Benson |
| Oliver | Charles E. | Waters | Ivy Beulah | 1913 | June 18 | U. G. Leagenby |
| Olson | Charles J. | Dillon | Louie E. | 1883 | May 29 | Urban C. Brewer |
| Osborn | Cicero H. | McCleary | Edna | 1877 | April 14 | P. Shedd |
| Osborn | Cuthbert H. | Grimes | Anna M. | 1871 | December 27 | Thos. Mendenhall, JP |
| Osborn | Cuthbert H. | Carter | Asenath B. | 1877 | December 20 | Thomas Mendenhall, JP |
| Osborn | Francis M. | Tomlinson | Cora E. | 1882 | June 18 | John C. Miller |
| Osborn | George W. | Chambers | Nannie C. | 1875 | January 14 | W. Trent |
| Osborn | Henry L. | Edwards | Mary E. | 1878 | July 31 | Eld. W. S. Tingley |
| Osborn | James M. | Marshall | Amanda Jane | 1877 | October 14 | John R. Kelley, JP |
| Osborn | Osborn H., Jr. | Petty | Sarah E. | 1873 | November 4 | Erasmus D. Thomas |
| Osborn | Levi W. | Coleman | Emma | 1872 | February 22 | Urban C. Brewer |
| Osborn | Levi W. | Reed | Anna R. | 1878 | April 7 | Newton M. Taylor, JP |
| Osborn | Marion | Fields | Lydia | 1873 | May 17 | Israel L. C. Bray, JP |
| Osborn | Martin | Davison | Mary C. | 1874 | September 16 | James M. Wills, JP |
| Osborn | Squire | Strong | Ellen | 1871 | September 29 | George McBray |
| Osborn | William | Heseltine | Eliza Ann | 1870 | June 28 | John F. Keeney |
| Osborne | George Lew | Gasper | Christine | 1916 | November 27 | Alfred Martin |
| Osborne | William E. | Hull | Fannie A. | 1883 | July 18 | L. C. Warren |
| Otterman | Oliver P. | Stewart | Mary S. | 1878 | May 26 | Eld. W. M. Benson |
| Ousler | Charles H. | Ellis | Mary E. | 1875 | October 12 | Miles Woods |
| Overman | Columbus | Madox | Emma V. | 1883 | September 4 | Wm. J. Buchanan |
| Overman | James | Conover | Maud | 1913 | November 17 | Albert H. Kennedy, JP |
| Overman | John | Maddox | Ora Bell | 1881 | January 13 | James W. Cutshall |
| Overman | Ruben J. | Nicholson | Edith A. | 1884 | July 20 | David Hadley |
| Overman | Ruben J. | Ramsey | Joanna C. | 1914 | August 4 | Rev. J. N. Blue |
| Overstreet | John G. | Simmons | Mary A. | 1883 | October 11 | Urban C. Brewer |
| Owen | Benjamin | Newman | Alice | 1871 | August 22 | James R. Mason |
| Owen | Charles H. | Stone | Susie C. | 1886 | April 20 | H. H. Dunlavy |
| Owen | Jackson | Zimmerman | Sarah | 1868 | January 30 | Abram Plunkitt |
| Owen | James M. | Belcher | Harriet | 1888 | August 26 | John F. Keeney |
| Owen | James W. | Zimmerman | Eveline | 1868 | May 7 | T. B. Stevens |
| Owen | Joel A. | Swaim | Laura A. | 1881 | October 13 | D. W. Risher |
| Owen | Leslie D. | Stanley | Ruth | 1913 | June 2 | Willis H. Bond |
| Owen | Nicolas | McCormick | Martha M. | 1870 | September 25 | C. W. Stewart |
| Owens | Frank | Russell | Christina | 1880 | February 18 | A. J. Frank |
| Owens | Frank J. | Walters | Inez E. | 1917 | August 4 | Rev. Samuel B. Grimes |
| Owens | J. C. | McFarland | Bettie | 1885 | August 1 | Amos. S. Wills, JP |
| Owens | James M. | Reitzel | Catharine J. | 1869 | May 23 | Rev. Wm. D. Trester |
| Owens | John C. | Roberts | Mary | 1871 | June 14 | Simon Rammell, JP |
| Owens | Marion C. | Clark | Martha J. | 1881 | September 22 | C. W. Stewart |
| Owens | Nicholas A. | Pine | Adelia | 1880 | November 9 | C. W. Stewart |
| Owens | Oliver P. | Duckworth | Florence M. | 1880 | November 21 | W. F. Clark |
| Owens | William | Hadley | Ida B. | 1880 | September 3 | Henry L. Dickerson |
| Owens | William J. | Ballard | Sibbie | 1870 | July 3 | J. W. Asbury |
| Owsley | Joel N. | McPheeters | Eliza E. | 1876 | September 7 | Edmund H. Post |