| Preen, Charlotte Marie | Christoph | 1906 | Bremen 1 |
| Preen, Elisabeth Minna | Christoph | 1908 | Bremen 1 |
| Preen, Georg | Siemer | 1910 | Bremen 1 |
| Preen, Georg August | Christoph | 1910 | Bremen 1 |
| Preen, Johann Wilhelm | Siemer | 1908 | Bremen 1 |
| Preen, Mathilde Charlotte | Siemer | 1911 | Bremen 1 |
| Preen, Meta Frieda Hermanne | Siemer | 1913 | Bremen 1 |
| Preen, Wilhelm Diedrich Heinrich | Christoph | 1907 | Bremen 1 |