Familj: Robert Carl Sommerfeld / Charlotte Irene Williamson (F502688)
 | William Leroy Williamson (1902-1978) |
 | Olga Theresia Anderson (1902-1995) 
|
| Marilyn Olga Williamson (1933- )  |
| Roger Leroy Williamson (1938- ) |
| Charlotte Irene Williamson (1935-2020)
|
