Robert Dale Williamson …– Faye Lousie Marie Rivard …– | | |
David George Williamson …– | | |
| | Mavis Margaret Yerex 1936–2006 John Alexander Williamson …– | | |
| | Noble Ulysses Yerex 1900–1981 | | |
| | Isaac Richard Yerex 1870–1959 Rebecca Isabelle Anderson 1876–1955 | | |
| | Elizabeth Ludlow 1935–1912 | | | | Elizabeth Travis 1796–1864 | | |
|
|