| Claassen, | 1913 | Bremen 1 | |
| Claassen, | 1914 | Bremen 1 | |
| Claassen, Hanna Sophie | Küster | 1987 | Bremen-Nord |
| Claassen, Hans Herbert | 1993 | Bremen-Nord | |
| Claassen, Heinrich Gerdes | 1966 | Bremen-Burglesum | |
| Claassen, Johannes Lucas | 1976 | Bremen-Mitte | |
| Claassen, Margarethe Johanne | Breske | 1968 | Bremen-Mitte |
| Claassen, Meta Catharine | Reincke | 1978 | Bremen-Burglesum |