| Siebers, Alma Franziska | 1938 | Freie Hansestadt Bremen | |
| Siebers, Anna Marg. e | 1887 | Bremen | |
| Siebers, Anneliese Dorothee | 1942 | Bremen-Mitte | |
| Siebers, Arnold Bertram | 1919 | Bremen 1 | |
| Siebers, Bertha Christ. Margr. | 1899 | Hemelingen | |
| Siebers, Carl Joh. Wilh. | 1911 | Bremen 1 | |
| Siebers, Christiane Aug.ste | 1891 | Bremen | |
| Siebers, Ella Grete Dora | 1929 | Hemelingen | |
| Siebers, Fritz Walter Karl | 1939 | Freie Hansestadt Bremen | |
| Siebers, Herta Gertrud | 1935 | Bremen 1 | |
| Siebers, Hinrich | 1878 | Bremen | |
| Siebers, Hinrich | 1907 | Bremen 1 | |
| Siebers, Hinrich Karl | 1934 | Bremen 1 | |
| Siebers, Johanne Henriette Adele | 1900 | Bremen | |
| Siebers, John Christian Friedrich | 1922 | Bremen 4 (Walle) | |
| Siebers, John Fried. Heinrich | 1898 | Hemelingen | |
| Siebers, Joseph | 1913 | Bremen 1 | |
| Siebers, Karl Johann Hinrich | 1934 | Bremen 1 | |
| Siebers, Louise Auguste | 1892 | Bremen | |
| Siebers, Sophie Elise Charlotte Johanne | 1914 | Bremen 1 | |
| Siebers, Theodor | 1938 | Bremen 1 | |
| Siebers, Theodor | 1909 | Bremen 1 | |
| Siebers, Wilhelm Friedrich | 1925 | Bremen 1 |