Family: William G. Knowles & Mary Elizabeth Simpson
m. 3 September 1906
 | Martin Luther Simpson (1858-1921) 
|
 | Martha Jane Jordan (1863-1942) |
| William Simpson (1883- ) |
| Hattie Simpson (1887-1931)  |
| Maggie M. Simpson (1890- ) |
| Jessie Simpson (1893- ) |
| James Luther Simpson (1896-1958) |
| Martha J. Simpson (1899- ) |
| Robert Edward Simpson (1906-1961) |
| Anna Nell Simpson (1911-1911) |
| William G. Knowles (1884-1956)
|
| Mary Elizabeth Simpson (1885-1974)
|
| William Allen Knowles (1907-1988) |
| Harold Simpson Knowles (1908-1972) |
| Charles Joseph Knowles (1916-2006) |