| Name | Cemetery | County | Updated |
| DUNCAN, Baby | Yankton Municipal Cemetery | Yankton | 2015-08-15 03:48:30 |
| DUNCAN, Emma M. | Sacred Heart Catholic Cemetery | Yankton | 2015-08-15 03:48:30 |
| DUNCAN, J. Robert | Sacred Heart Catholic Cemetery | Yankton | 2015-08-15 03:48:30 |
| DUNCAN, Lewis E. | Garden of Memories-Yankton Cemetery | Yankton | 2015-08-15 03:48:30 |
| DUNCAN, Lewis E. (WW I) | Garden of Memories-Yankton Cemetery | Yankton | 2015-08-15 03:48:30 |
| DUNCAN, Mary E. | Garden of Memories-Yankton Cemetery | Yankton | 2015-08-15 03:48:30 |
| DUNCAN, Wm. Jasper | Elm Grove aka Maple Grove Cemetery | Yankton | 2015-08-15 03:48:31 |