| Blanknagel, Anna Marie Sophie | Müller | 1931 | Bremen 4 (Horn) |
| Blanknagel, Franz August | 1926 | Bremen 1 | |
| Blanknagel, Hermann Wilhelm | 1929 | Bremen 1 | |
| Blanknagel, Marie Emilie Helene | 1931 | Bremen 1 | |
| Blanknagel, Robert Andreas | 1882 | Bremen | |
| Blanknagel, Robert Julius | 1897 | Bremen |