| Sieburg, Adolphe Leonore Wilhelmine | Siedler | 1911 | Bremen 1 |
| Sieburg, Bertha Minna Frieda | Henze | 1930 | Bremen 1 |
| Sieburg, Dorette Sophie Marie | Lange | 1950 | Bremen-Vegesack |
| Sieburg, Friedrich August Heinrich Wilhelm | 1983 | Bremen-Mitte | |
| Sieburg, Georg Friedrich August | 1932 | Bremen 1 | |
| Sieburg, Hermann Otto Julius | 1938 | Bremen 1 | |
| Sieburg, Sophie Luise Lisette Auguste | Honeck | 1931 | Bremen 1 |
| Sieburg, Wilhelm Hermann Julius | 1904 | Bremen 1 | |
| Sieburg, Wilhelm Hermann Louis | 1922 | Bremen 1 |