| Gratenau, Else Hedwig Sophie | Sanders | 1893 | Bremen |
| Gratenau, Ernst Adolf | Sanders | 1890 | Bremen |
| Gratenau, Friedrich Walter Magnus | Sanders | 1896 | Bremen |
| Gratenau, Heinrich Rudolf | Sanders | 1884 | Bremen |
| Gratenau, Hermann Siegfried | Sanders | 1887 | Bremen |
| Gratenau, Karl August | Sanders | 1885 | Bremen |
| Gratenau, Luise | Sanders | 1884 | Bremen |
| Gratenau, Martha Sophie Hedwig | Sanders | 1890 | Bremen |
| Gratenau, Wilhelm Heinrich | Sanders | 1882 | Bremen |