| O'Bannon | Bertha | 1377, 1397 |
| Charles | 1358, 1375 | |
| Daisy | 1376 | |
| Daniel | 1358, 1377 | |
| Dick | 1376 | |
| Ethel | 1376 | |
| Fred | 1376 | |
| George | 1337, 1342, 1358, 1376 | |
| Gertrude | 1377 | |
| Grace | 1377, 1397 | |
| Henry | 1376 | |
| Jane | 1377, 1397 | |
| John | 1358, 1375 | |
| Margaret | 1358, 1375 | |
| Marion | 1358, 1375 | |
| Nancy | 1337, 1342, 1357 | |
| Oscar | 1358, 1376 | |
| Peggy | 1337, 1342, 1358 | |
| Sarah | 1358, 1376 | |
| T___ J___ | 1397 | |
| William | 1342, 1376 | |
| Winfield | 1358, 1377 | |
| O'Barr | Jeanna | 384 |
| O'Donald | Cecil | 1017 |
| Owen | 1498 | |
| O'Dell | Minnie | 238 |
| Oakden | Brent | 373 |
| David | 373 | |
| Franklin | 373 | |
| Reuben | 373 | |
| Steven | 373 | |
| Susan | 373 | |
| Oberhaltzer | Tina | 1265 |
| Oberlin | Maria | 701 |
| Odom | Mary | 1111 |
| Officer | Andrew | 454 |
| Jeffrey | 333, 453 | |
| Jerimy | 453 | |
| Jessica | 453 | |
| John | 333, 454 | |
| Karen | 333, 453 | |
| Rickey | 333, 453 | |
| Teresa | 333, 453 | |
| Ogden | Charles | 289 |
| Mary | 288 | |
| Oldham | Neva | 478 |
| Olenberge | Edith | 521 |
| Oliver | Bettie | 1161 |
| Oliverio | Antoinette | 503 |
| Christopher | 503 | |
| Greg | 503 | |
| John | 503 | |
| Ong | Albina | 738 |
| Oravec | John | 476 |
| Oreman | Lonnie | 700 |
| Wyett | 700 | |
| Orr | Linda | 1267 |
| Percy | 1451 | |
| Ort | George | 792 |
| Orton | Agnes | 1374 |
| Irene | 1412 | |
| Larry | 1396, 1412 | |
| Linda | 1412 | |
| Rebecca | 1412 | |
| Reed | 1396 | |
| Osborn | Nancy | 1500 |
| Osborne | _____ | 68 |
| George | 713, 831 | |
| Gretis | 831 | |
| Jerry | 63 | |
| William | 732 | |
| Osborne | Zerilda | 62 |
| Ostertag | 1544 | |
| Verena | 674 | |
| Oswald | Dorothy | 461 |
| Gerald | 1418 | |
| Heather | 1418 | |
| Shawne | 1418 | |
| Willow | 1418 | |
| Otis | Marjory | 1487 |
| Ottinger | Addie | 932 |
| Amanda | 1302 | |
| Don | 1091, 1209 | |
| Doris | 999, 1092 | |
| Ottinger | Douglas | 1209, 1302 |
| Infant | 1091, 1210 | |
| James | 1091, 1209 | |
| John | 932, 999, 1091, 1302 | |
| Mark | 1209, 1303 | |
| Samuel | 999 | |
| Wanna | 999, 1092 | |
| Overfey | _____ | 469 |
| Overson | Ross | 350 |
| Owens | Harry | 161 |
| Louise | 653 | |
| Nancy | 865 | |
| Owrey | Charles | 187, 290, 410 |
| Claire | 290, 413 | |
| Clay | 288, 409 | |
| Deborah | 410 | |
| Elizabeth | 410 | |
| Evelyn | 187, 289 | |
| James | 290, 410, 413 | |
| Janet | 290, 415 | |
| Kristi | 409 | |
| Mary | 187, 291 | |
| Michael | 410 | |
| Mona | 290, 414 | |
| Rebecca | 410 | |
| Robert | 288, 410 | |
| Roger | 288, 409 | |
| Sarah | 413 | |
| William | 187, 288, 409 | |
| Oyer | Anne | 1467 |
| Barbara | 1466 | |
| David | 1453, 1467 | |
| Dwight | 1467 | |
| Frances | 1466 | |
| Harry | 1466 | |
| Helen | 1467 | |
| Henry | 1453 | |
| Martha | 1453, 1466 | |
| Mary | 1453, 1466 | |
| Miriam | 1466 | |
| Percy | 1453, 1467 | |
| Russell | 1467 | |
| Ruth | 1466 | |
| Sarah | 1453, 1466, 1467 | |
| Solomon | 1453, 1465 |