| Gredel, Adelheid Margarethe Käthe | Lüllmann | 1910 | Grohn |
| Gredel, Charlotte Alma Minna | Gensecke | 1909 | Grohn |
| Gredel, Emma Anna | Gensecke | 1908 | Grohn |
| Gredel, Friedr. Carl | 1906 | Grohn | |
| Gredel, Hermann Robert Willy | Lüllmann | 1912 | Gröpelingen |
| Gredel, Herta Anna Alma | Gensecke | 1913 | Aumund I |
| Gredel, Robert Friedrich Hermann | Gensecke | 1910 | Grohn |