| Seyffert, August Eduard Max | Keerl | 1891 | Bremen |
| Seyffert, Dorothea Edith | Keerl | 1897 | Bremen |
| Seyffert, Erich Gottfried Adolf | 1892 | Grohn | |
| Seyffert, Ernst Amandus | 1890 | Grohn | |
| Seyffert, Hildegard Leonore Luise | Keerl | 1896 | Bremen |
| Seyffert, Margarete Emilie Luise | Keerl | 1893 | Bremen |