| Sieburg, Albert Julius Hugo | 1927 | Bremen 1 | |
| Sieburg, Anna Aug.ste | 1889 | Bremen | |
| Sieburg, Georg Friedrich August | 1931 | Bremen 1 | |
| Sieburg, Johanne Wilhelmine Dorette Justine | 1890 | Vegesack | |
| Sieburg, Johannes Günter Maria | 1940 | Bremen-Mitte | |
| Sieburg, Kurt Adolf Julius | 1933 | Bremen 1 | |
| Sieburg, Martha Dorette Amalie Lina | 1925 | Bremen 1 | |
| Sieburg, Wilhelm Herm. Julius | 1914 | Bremen 1 |