| Siebels, Alfred Walter | 1967 | ||
| Siebels, Alwine Louise Anna | Röhrhop | Siebels Otto Johannes | 1924 |
| Siebels, Anna Friederike Auguste | Siebels Anna Catharine Margaethe | 1909 | |
| Siebels, Anton Heinrich | 1971 | ||
| Siebels, Friederike Margarete | 1915 | ||
| Siebels, Magdalena Marie | Manke | Siebels Alfred Walter | 1971 |
| Siebels, Mathilde Johanne | Siebels Otto Johannes | 1902 | |
| Siebels, Otto Johannes | 1907 | ||
| Siebels, Wilhelm August | Siebels Alma Wilhelmine | 1914 |