

![]() | Mary Louise Mattson |
| Mary Louise Mattson | |
| B: | 1926 |
| Minnesota, United States | |
| D: | Yes, date unknown |
![]() | Severn Ingard Mattson |
| Severn Ingard Mattson | |
| B: | 9 Oct 1897 |
| Lake Lillian, Kandiyohi, Minnesota, United States | |
| D: | 22 Feb 1983 |
| South Bend, Saint Joseph, Indiana, United States | |
![]() | Helen Frances Edgerton |
| Helen Frances Edgerton | |
| B: | 5 Nov 1891 |
| Chicago, Cook, Illinois, United States | |
| M: | 2 Jul 1923 |
| Oconomowoc, Waukesha, Wisconsin, United States | |
| D: | Oct 1985 |
| South Bend, Saint Joseph, Indiana, United States | |