1888 - 1950 (61 år)
 | Sylvia Tvedt 1910-1974 |
| Sylvia Tvedt | |
| F: | 18 Jan 1910 |
| Nebraska, USA | |
| D: | Aug 1974 |
| King County, Washington, USA | |
 | Olga Tvedt 1912- |
| Olga Tvedt | |
| F: | 1912 |
| Nebraska, USA | |
 | Rudolph Tvedt 1914-1976 |
| Rudolph Tvedt | |
| F: | 1914 |
| Grand Forks County, North Dakota, USA | |
| D: | 1976 |
| San Antonio, Bexar County, Texas, USA | |
|
| Hans Mandius Rasmussen Tvedt* 1888-1950 |
| Hans Mandius Rasmussen Tvedt* | |
| F: | 8 Aug 1888 |
| Åkra, Sævland, Rogaland | |
| D: | 1 Apr 1950 |
| Grand Forks County, North Dakota, USA | |
| Lina Tvedt 1887-1979 |
| Lina Tvedt | |
| F: | 22 Nov 1887 |
| Norge | |
| D: | 10 Sep 1979 |
| Grand Forks County, North Dakota, USA | |
