1911 - 1992 (81 år)
 | Jr Irvin Augustine Christenson 1938-2005 |
| Jr Irvin Augustine Christenson | |
| F: | 12 Jun 1938 |
| Cedar Rapids, Linn County, Iowa, USA | |
| D: | 5 Okt 2005 |
| Albuquerque, Bernalillo County, New Mexico, USA | |
| Irvin Augustine Christenson 1911-1992 |
| Irvin Augustine Christenson | |
| F: | 15 Maj 1911 |
| Spring Valley, Fillmore County, Minnesota, USA | |
| D: | 21 Aug 1992 |
| Cass County, North Dakota, USA | |
 | Katherine Jean Christopherson 1916-2015 |
| Katherine Jean Christopherson | |
| F: | 14 Okt 1916 |
| Garden City, Hardin County, Iowa, USA | |
| V: | 10 Aug 1937 |
| Nashua, Chickasaw, Floyd County, Iowa, USA | |
| D: | 16 Jan 2015 |
| Annandale, Wright County, Minnesota, USA | |
