| Siebker, Adele Minna | 1968 | Bremen-Mitte | |
| Siebker, Catharine Margarethe | Knöpfel | 1950 | Bremen-Mitte |
| Siebker, Emilie Charlotte | 1966 | Bremen-Mitte | |
| Siebker, Ernestine Juliane Bertha | Krome | 1931 | Bremen 1 |
| Siebker, Friedr. Carl | 1885 | Bremen | |
| Siebker, Hermann Diedrich | 1902 | Bremen 1 | |
| Siebker, Hermann Heinrich | 1906 | Bremen 1 | |
| Siebker, Johann Heinrich | 1977 | Bremen-Mitte | |
| Siebker, Sophie Auguste | 1962 | Bremen-Mitte | |
| Siebker, Sophie Wilhelmine | 1917 | Bremen 1 |