| Boltjes, Gerhardine Margarethe Johanne | Ötken | 1894 | Woltmershausen |
| Boltjes, Heinrich | Ötken | 1895 | Woltmershausen |
| Boltjes, Margaretha Maria | Ötken | 1897 | Woltmershausen |
| Boltjes, Sophie Elise | Ötken | 1899 | Woltmershausen |
| Boltjes, Johann Ludwig | Ötken | 1900 | Woltmershausen |
| Boltjes, Helene Wilhelmine | Ötken | 1902 | Woltmersh., Bremen 3 (Woltm.) |
| Boltjes, Elise Hinrike | Ötken | 1904 | Bremen 3 (Woltm.hsn) |