| Schaak, Dorothe | Riegbers | 1889 | Westhollerland |
| Schaak, Elisabeth Emilie Dorothee | Otten | 1908 | Bremen 1 |
| Schaak, Emil Johann | Uepkendanz | 1912 | Bremen 1 |
| Schaak, Georg Karl | Otten | 1911 | Bremen 1 |
| Schaak, Käthe Gertrud Luise | Otten | 1905 | Bremen 1 |
| Schaak, Sophie Cath. Marg. | Rigbers | 1880 | Bremen |
| Schaak, Sophie Emilie | Otten | 1903 | Bremen 3 (Woltm.hsn) |
| Schaak, Wilma Margarethe Dorothee | Otten | 1906 | Arsten |