| Billhardt, Anna Marie Clara | Schilling | Billhardt Ernst Karl Emil | 1931 |
| Billhardt, August Emil Kurt | 1940 | ||
| Billhardt, Doris Helga | Thomas geb. Billhardt Frieda Johanna | 1953 | |
| Billhardt, Emma | Bolte | Billhardt August Emil Kurt | 1948 |
| Billhardt, Ernst Karl Emil | 1938 |