1863 - 1934 (70 år)
| Dolores Elaine Thorson | |
| F: | 26 Nov 1928 |
| Lost Island Township, Palo Alto County, Iowa, USA | |
| D: | Jun 1986 |
| Mathilda Isabelle Rierson | |
| F: | 19 Apr 1904 |
| Bowbells, Burke County, North Dakota, USA | |
| D: | 20 Jan 1977 |
| Ruthven, Palo Alto County, Iowa, USA | |
| Porter Dennis Thorson | |
| F: | 13 Feb 1904 |
| Graettinger, Palo Alto County, Iowa, USA | |
| V: | 23 Mar 1927 |
| Lost Island Township, Palo Alto County, Iowa, USA | |
| D: | 17 Okt 1996 |
| Graettinger, Palo Alto, Iowa, USA | |
| Thomas H Rierson | |
| F: | Jun 1863 |
| Norge | |
| D: | 1934 |
| Ruthven, Palo Alto County, Iowa, USA | |
| Karen Johanna "Hannah*" Jacobson Stamsos | |
| F: | 3 Apr 1870 |
| Norge | |
| D: | 25 Dec 1930 |
| Ruthven, Palo Alto County, Iowa, USA | |
