| Name | Cemetery | County | Updated |
| COSTELLO, Delbert O. "Kelly" | Yankton Municipal Cemetery | Yankton | 2015-08-15 03:40:15 |
| COSTELLO, Delbert O. (WW II) | Yankton Municipal Cemetery | Yankton | 2015-08-15 03:40:15 |
| COSTELLO, Lavay E. | Yankton Municipal Cemetery | Yankton | 2015-08-15 03:40:15 |