| Harborth, Agnes Veronica | Harborth | 1887 | Bremen |
| Harborth, Auguste | Harborth | 1890 | Bremen |
| Harborth, Erich | Klein | 1911 | Bremen 1 |
| Harborth, Marie Alwine Elfriede | Harland | 1911 | Bremen 1 |
| Harborth, Otto Friedrich | Harborth | 1889 | Bremen |
| Harborth, Pauline Elisabeth | Harborth | 1885 | Bremen |