1896 - 1970 (73 år)
 | Harold Mathias Helgeson 1921-1943 |
| Harold Mathias Helgeson | |
| F: | 2 Maj 1921 |
| Great Falls, Cascade County, Montana, USA | |
| D: | 24 Nov 1943 |
| Cristóbal, Colón, Panama | |
|
| Olga Caroline Matland 1896-1970 |
| Olga Caroline Matland | |
| F: | 26 Dec 1896 |
| Great Falls, Cascade County, Montana, USA | |
| D: | 11 Dec 1970 |
| Great Falls, Cascade County, Montana, USA | |
 | Ole Mandius "Mike*" Helgeson 1891-1967 |
| Ole Mandius "Mike*" Helgeson | |
| F: | 18 Dec 1891 |
| Skjold, Tveit, Rogaland | |
| D: | 7 Nov 1967 |
| Great Falls, Cascade County, Montana, USA | |
