1920 - 2001 (80 years)
| Melvin Johnson Robison 1920-2001 |
| Melvin Johnson Robison | |
| B: | 6 Dec 1920 |
| Byron, Bighorn, Wyoming | |
| D: | 2 Apr 2001 |
| Powell, Park, Wyoming, United States | |
 | Virginia Marguerite Cox 1924-2020 |
| Virginia Marguerite Cox | |
| B: | 12 Jun 1924 |
| Powell, Park, Wyoming | |
| M: | 24 May 1941 |
| Billings, Yellowstone, Montana | |
| D: | 31 Jul 2020 |
