| Haertel, Erich Karl | Hentschel | 1903 | Bremen 1 |
| Haertel, Frieda Gretchen | Hentschel | 1905 | Bremen 1 |
| Haertel, Karl Hermann | Hentschel | 1909 | Bremen 1 |
| Haertel, Margarethe Martha | Hentschel | 1901 | Bremen |
| Haertel, Martha Ida | Hentschel | 1912 | Bremen 1 |
| Haertel, Richard Hermann Otto | Hentschel | 1907 | Bremen 1 |