| Name | Cemetery | County | Updated |
| O'BRIEN, David L. | Garden of Memories-Yankton Cemetery | Yankton | 2015-08-15 05:40:12 |
| O'BRIEN, John Patrick | Yankton Municipal Cemetery | Yankton | 2015-08-15 05:40:12 |
| O'BRIEN, Kathleen M. | Garden of Memories-Yankton Cemetery | Yankton | 2015-08-15 05:40:12 |
| O'BRIEN, Kathryn Marie | Sacred Heart Catholic Cemetery | Yankton | 2015-08-15 05:40:13 |
| O'BRIEN, Thomas Britt | Sacred Heart Catholic Cemetery | Yankton | 2015-08-15 05:40:13 |