| Siebken, Anna Margarethe | Knipers | 1896 | Woltmershausen |
| Siebken, Anni Wilhelmine Christine | Menzel | 1905 | Bremen 3 (Woltm.hsn) |
| Siebken, Claus | Knipers | 1894 | Woltmershausen |
| Siebken, Claus Christian | Menzel | 1903 | Bremen 3 (Woltm.hsn) |
| Siebken, Friedrich Karl | Menzel | 1911 | Bremen 3 (Woltm.hsn) |
| Siebken, Heinrich | Knipers | 1898 | Woltmershausen |
| Siebken, Hinrich Hermann Christian | Knipers | 1900 | Woltmershausen |
| Siebken, Johann | Knipers | 1904 | Bremen 3 (Woltm.hsn) |
| Siebken, Johannes Ernst | Menzel | 1910 | Bremen 3 (Woltm.hsn) |
| Siebken, Marie Anna | Menzel | 1902 | Woltmersh., Bremen 3 (Woltm.) |