| Siebelts, Adelina | 1925 | Bremen 1 | |
| Siebelts, Anna Marie Caroline | Klatte | 1981 | Bremen-Mitte |
| Siebelts, Anna Martha | Weinert | 1958 | Bremen-Mitte |
| Siebelts, Ferdinand Johann | 1931 | Bremen 1 | |
| Siebelts, Georg Johannes | 1976 | Bremen-Vegesack | |
| Siebelts, Gesine Catharine | 1961 | Bremen-Mitte | |
| Siebelts, Hankelina | Gerhards | 1930 | Bremen 1 |
| Siebelts, Haukeline Helene | 1886 | Bremen | |
| Siebelts, Hinrich Lüken | 1895 | Bremen | |
| Siebelts, Martin | 1929 | Bremen 2 (Hastedt) | |
| Siebelts, Mathilde Anna Adelina | 1928 | Bremen 1 | |
| Siebelts, Meinhard Eduard Sibo | 1949 | Bremen-Mitte | |
| Siebelts, Therese Marie Louise | Hildebrandt | 1921 | Bremen 1 |
| Siebelts, Werner | 1970 | Bremen-Mitte |