1894 - 1975 (81 år)
 | Marvin Wayne Halvorson 1940-2015 |
| Marvin Wayne Halvorson | |
| F: | 30 Nov 1940 |
| Iowa County, Iowa, USA | |
| D: | 10 Sep 2015 |
| Conroy, Iowa County, Iowa, USA | |
 | Norma Amelia Helgeson 1916-1994 |
| Norma Amelia Helgeson | |
| F: | 17 Maj 1916 |
| Marengo, Iowa County, Iowa, USA | |
| D: | 18 Okt 1994 |
| Iowa City, Johnson County, Iowa, USA | |
| Milford Harold Halvorson 1912-1997 |
| Milford Harold Halvorson | |
| F: | 16 Apr 1912 |
| Iowa County, Iowa, USA | |
| V: | 27 Feb 1937 |
| Norway, Benton County, Iowa, USA | |
| D: | 14 Jan 1997 |
| Iowa City, Johnson County, Iowa, USA | |
 | Grace Ellen Helgeson 1918-2020 |
| Grace Ellen Helgeson | |
| F: | 13 Jul 1918 |
| Hilton Township, Iowa County, Iowa, USA | |
| D: | 17 Okt 2020 |
| Williamsburg, Iowa County, Iowa, USA | |
 | Walter Leonard Olson 1914-1991 |
| Walter Leonard Olson | |
| F: | 13 Okt 1914 |
| Newhall, Benton County, Iowa, USA | |
| V: | 5 Apr 1941 |
| Marengo, Iowa County, Iowa, USA | |
| D: | 26 Jun 1991 |
| Marengo, Iowa County, Iowa, USA | |
 | Olin Gilbert Helgeson 1922-2000 |
| Olin Gilbert Helgeson | |
| F: | 10 Apr 1922 |
| Conroy, Iowa County, Iowa, USA | |
| D: | 3 Dec 2000 |
| Cedar Rapids, Linn County, Iowa, USA | |
 | Jane Odette Rice 1919-2016 |
| Jane Odette Rice | |
| F: | 27 Dec 1919 |
| Cedar Rapids, Linn County, Iowa, USA | |
| V: | 2 Jul 1961 |
| Conroy, Iowa County, Iowa, USA | |
| D: | 27 Dec 2016 |
| Amana, Iowa County, Iowa, USA | |
 | Eileen Janet Bockholt 1930-2008 |
| Eileen Janet Bockholt | |
| F: | 8 Nov 1930 |
| Kane Township, Benton County, Iowa, USA | |
| V: | 31 Dec 1950 |
| Ottumwa, Wapello County, Iowa, USA | |
| D: | 9 Dec 2008 |
| Keystone, Benton County, Iowa, USA | |
 | Hjalmar John Helgeson 1925-1925 |
| Hjalmar John Helgeson | |
| F: | 2 Okt 1925 |
| Conroy, Iowa County, Iowa, USA | |
| D: | 29 Okt 1925 |
| Conroy, Iowa County, Iowa, USA | |
|
| Hjalmar Olai Helgeson 1894-1975 |
| Hjalmar Olai Helgeson | |
| F: | 24 Apr 1894 |
| Hilton Township, Iowa County, Iowa, USA | |
| D: | 2 Maj 1975 |
| Iowa County, Iowa, USA | |
 | Anna Malinda Olson 1892-1973 |
| Anna Malinda Olson | |
| F: | 15 Mar 1892 |
| Hilton Township, Iowa County, Iowa, USA | |
| V: | 18 Sep 1914 |
| Sycamore, DeKalb County, Illinois, USA | |
| D: | 19 Jun 1973 |
| Marengo, Iowa County, Iowa, USA | |
