1913 - 2000 (87 år)
 | Ralph Gordon Koch 1941-2000 |
| Ralph Gordon Koch | |
| F: | 20 Aug 1941 |
| Joliet, Will County, Illinois, USA | |
| D: | 28 Nov 2000 |
| Rochester, Olmsted County, Minnesota, USA | |
| Gordon William Koch 1913-2000 |
| Gordon William Koch | |
| F: | 30 Maj 1913 |
| Joliet, Will County, Illinois, USA | |
| D: | 17 Nov 2000 |
| Joliet, Will County, Illinois, USA | |
 | Ardys Helen Mortvedt 1921-2015 |
| Ardys Helen Mortvedt | |
| F: | 24 Nov 1921 |
| Bristol, Kendall County, Illinois, USA | |
| D: | Maj 2015 |
| Chicago, Cook County, Illinois, USA | |
