| Siebels, Almuth Maria | 1882 | Bremen | |
| Siebels, Anna Catharine Margarethe | 1914 | Bremen 1 | |
| Siebels, Anna Marie Ch. | 1890 | Bremen | |
| Siebels, Anton Hinrich | 1924 | Bremen 1 | |
| Siebels, Christ. e Marie Diedr. | 1881 | Bremen | |
| Siebels, Johanne Wilhelmine | 1937 | Bremen 1 | |
| Siebels, Johannes Hermann Peter | 1943 | Bremen-Mitte | |
| Siebels, Lücke Catharina Johanna | 1879 | Vegesack |