| Hackfeld, Albert Johann Hermann | Siemer | 1878 | Bremen |
| Hackfeld, August Heinrich | Siemer | 1896 | Bremen |
| Hackfeld, Bernhard Heinrich | Horstmann | 1877 | Bremen |
| Hackfeld, Emma | Fritz | 1909 | Bremen 1 |
| Hackfeld, Fritz Diedrich | Schaare | 1908 | Bremen 5 (Gröpelingen) |
| Hackfeld, Heinrich Carl | Siemer | 1885 | Bremen |
| Hackfeld, Hermann Fritz | Schaare | 1906 | Bremen 1 |
| Hackfeld, Hinrich Hermann | Siemer | 1883 | Bremen |
| Hackfeld, Ida | Fritz | 1907 | Bremen 1 |
| Hackfeld, Meta Marie | Siemer | 1880 | Bremen |
| Hackfeld, Wilhelm | Fritz | 1906 | Bremen 1 |
| Hackfeld, Wilma Anna | Hackfeld | 1910 | Bremen 1 |