Siegmund Isaak
| Sex: | Male | |
| Father: | ||
| Mother: | ||
| Birth: | 1882 | 1 |
| Death: | 2 | |
| Religion: | JD | |
Family 1
| Spouse/Partner: | Martha (Marta) Schönthal | b. 1889 d. 1941 |
| Marriage: | 3 | |
| Children: | ||
Ruth Isaak
 |
b. 1913 d. 1941 | |
Erich Isaak
 |
b. 1917 d. 1941 | |
