| Keffel, Aug. Ernst | 1928 | Bremen 1 | |
| Keffel, Aug. Wilh. Doria | 1882 | Bremen | |
| Keffel, August Adolf Heinrich | 1915 | Bremen 1 | |
| Keffel, August Ernst | 1918 | Bremen 1 | |
| Keffel, Christian August | 1937 | Bremen 1 | |
| Keffel, Dorothea Wilh. Elis. | 1889 | Bremen | |
| Keffel, Gertrud Elfriede Sophie Marie Elisabeth | 1925 | Bremen 1 | |
| Keffel, Johannes Wilhelm | 1908 | Bremen 1 | |
| Keffel, Johannes Wilhelm | 1938 | Bremen 1 | |
| Keffel, Karl | 1936 | Bremen 1 | |
| Keffel, Margarethe Marie Metta | 1908 | Bremen 1 | |
| Keffel, Walter | 1942 | Bremen-Mitte |