1895 - 1965 (69 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 | |
 | 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 | |
 | 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 | |
 | Beverly Jean Mortvedt 1925-2006 |
| Beverly Jean Mortvedt | |
| F: | 9 Dec 1925 |
| Millbrook, Kendall County, Illinois, USA | |
| D: | 3 Okt 2006 |
| Joliet, Will County, Illinois, USA | |
 | Darrell Donald Nelson 1925-1982 |
| Darrell Donald Nelson | |
| F: | 20 Feb 1925 |
| Joliet, Will County, Illinois, USA | |
| V: | 19 Jun 1946 |
| Illinois, USA | |
| D: | 10 Sep 1982 |
| Joliet, Will County, Illinois, USA | |
|
| Alvin Obed Mortvedt 1895-1965 |
| Alvin Obed Mortvedt | |
| F: | 11 Jul 1895 |
| Dell Rapids, Minnehaha County, South Dakota, USA | |
| D: | 27 Feb 1965 |
| Joliet, Will County, Illinois, USA | |
 | Lyda Sophia Knudsdatter Weeks* 1892-1977 |
| Lyda Sophia Knudsdatter Weeks* | |
| F: | 24 Aug 1892 |
| Newark, Kendall County, Illinois, USA | |
| D: | 1 Aug 1977 |
| Joliet, Will County, Illinois, USA | |
