| Siebecke, Ewald | Siebecke Elfriede | 1943 | |
| Siebecke, Frieda Auguste Bertha | Hilse | Siebecke Wilhelm Otto Diedr. | 1931 |
| Siebecke, Hertha Antonie Emmy | Dietzel | Siebecke Wilhelm Otto Diedrich | 1958 |
| Siebecke, Marie Anna Dorothee | Schröder | Siebecke Wilhelm Otto | 1958 |
| Siebecke, Wilhelm Otto | 1934 | ||
| Siebecke, Wilhelm Otto Diedrich | 1963 |