| Klefeker, Anna Johanne Henr. | 1923 | Bremen 1 | |
| Klefeker, Ernestine Diederike Gesine | 1897 | Bremen | |
| Klefeker, Hermann | 1940 | Bremen-Mitte | |
| Klefeker, Joh. Mart. Heinr. | 1896 | Bremen | |
| Klefeker, Joh. Mart. Heinr. | 1931 | Bremen 1 | |
| Klefeker, Johanne Wilhelmine Marie | 1927 | Bremen 1 | |
| Klefeker, Louise Dor Marie | 1895 | Bremen | |
| Klefeker, Marg. e Ges. Louise | 1893 | Bremen | |
| Klefeker, Wilh. Heinr. | 1935 | Bremen 1 |