_Robert BERTSCH ______
| (1897 - 1968) m 1924
_Robert Eugene BERTSCH _|
| (1929 - ....) |
| |_Florence Irene GROW _+
| (1903 - ....) m 1924
|
|--Derek BERTSCH
|
| ______________________
| |
|_Ellen SECREST _________|
|
|______________________