| Hartz, Caroline Gesine Anna | Schulze | 1897 | Bremen |
| Hartz, Erna Luise | Schulze | 1903 | Bremen 1 |
| Hartz, Frieda Helene | Heise | 1887 | Bremen |
| Hartz, Gesine Hermine | Schulze | 1903 | Bremen 1 |
| Hartz, Gustav Friedrich Theodor | Klockgether | 1904 | Bremen 1 |
| Hartz, Johann Anton | Dillen | 1883 | Bremen |
| Hartz, Julie Pauline Lilly | Schulze | 1900 | Bremen |
| Hartz, Louis Karl Emil | Blome | 1912 | Bremen 1 |
| Hartz, Marie Christine Henriette | Heise | 1886 | Bremen |
| Hartz, Richard Reinhard | Budelmann | 1880 | Bremen |