| Jakubowski, Albert | Labusinska | 1910 | Bremen 1 |
| Jakubowski, Alfred Wilhelm | Labusinska | 1907 | Bremen 1 |
| Jakubowski, Johanne Wilhelmine | Labusinska | 1912 | Bremen 1 |
| Jakubowski, Marie Helene | Labusinska | 1909 | Bremen 1 |
| Jakubowski, Walter | Neuhaus | 1908 | Bremen 1 |
| Jakubowski, Wilhelm | Labusinska | 1913 | Bremen 1 |