| Furthmann, Friedrich | 1897 | Bremen | |
| Furthmann, Friedrich | 1911 | Bremen 1 | |
| Furthmann, Friedrich Gustav | 1896 | Bremen | |
| Furthmann, Heinrich Friedrich Wilhelm | 1926 | Bremen 1 | |
| Furthmann, Johann Wilhelm | 1897 | Hastedt | |
| Furthmann, Käthe Martha | 1939 | Freie Hansestadt Bremen | |
| Furthmann, Natalie Frieda Clara | 1909 | Bremen 1 |