1887 - 1961 (74 år)
| David Martin Tvedt | |
| F: | 1 Dec 1950 |
| Grand Forks, Grand Forks County, North Dakota, USA | |
| D: | 12 Dec 2016 |
| Larimore, Grand Forks County, North Dakota, USA | |
| Racine Tvedt | |
| F: | 4 Okt 1910 |
| North Dakota, USA | |
| D: | 27 Maj 1986 |
| Grand Forks County, North Dakota, USA | |
| Reine Tvedt | |
| F: | 1911 |
| North Dakota, USA | |
| Solvig Tvedt | |
| F: | 22 Jan 1914 |
| Grand Forks County, North Dakota, USA | |
| D: | 31 Jan 2007 |
| Bremerton, Kitsap County, Washington, USA | |
| John Korsey Johnson | |
| F: | 1 Maj 1913 |
| North Dakota, USA | |
| D: | 6 Apr 1999 |
| Fargo, Cass County, North Dakota, USA | |
|
| David Rasmussen Tvedt* | |
| F: | 8 Mar 1887 |
| Åkra, Sævland, Rogaland | |
| D: | 10 Mar 1961 |
| Grand Forks County, North Dakota, USA | |
| Johanna Martea Olsdatter | |
| F: | 11 Aug 1888 |
| Norge | |
| D: | 13 Mar 1976 |
| Grand Forks County, North Dakota, USA | |
