| Claassen, Adolph | 1913 | Bremen 1 | |
| Claassen, Benjamin Gottfried | 1910 | Bremen 1 | |
| Claassen, Clementina Carolina Melania | 1942 | Bremen-Mitte | |
| Claassen, Heinr. Gerdes | 1929 | Bremen 1 | |
| Claassen, Heinz Ernst | 1935 | Bremen 1 | |
| Claassen, Joh. Conr. Bernh. | 1905 | Bremen 1 | |
| Claassen, Joh. Friedr. Adolph | 1902 | Bremen, Bremen 1 | |
| Claassen, Joh.a Margarete Marie | 1934 | Bremen 1 | |
| Claassen, Luise Klasine | 1935 | Bremen 1 | |
| Claassen, Paula Charlotte | 1939 | Freie Hansestadt Bremen | |
| Claassen, Rud. Ed. Willi | 1899 | Bremen |