| Witczak, Anna | Hübsch | 1911 | Blumenthal |
| Witczak, Anton | 1900 | Blumenthal | |
| Witczak, Eduard | 1901 | Blumenthal | |
| Witczak, Helene | 1905 | Blumenthal | |
| Witczak, Marie | Welnagorska | 1901 | Bremen |
| Witczak, Marie | 1909 | Blumenthal | |
| Witczak, Stephan | Welnagorska | 1902 | Bremen 1 |
| Witczak, Stephan | 1903 | Blumenthal |