| Drefahl, Erna Ida Elly | Struck | 1910 | Bremen 1 |
| Drefahl, Erna Sophie Antonie Dorette | Grabowski | 1897 | Bremen |
| Drefahl, Ernst Detlef | Grabowski | 1910 | Bremen 1 |
| Drefahl, Hans Friedrich | Grabowski | 1898 | Bremen |
| Drefahl, Richard Fritz | Grabowski | 1902 | Bremen 1 |
| Drefahl, Wilhelm Ferdinand | Grabowski | 1900 | Bremen |