| Koehn, Elisabeth | Schreiber | Koehn Friedrich Gustav Ferdinand | 1966 |
| Koehn, Ewald Hermann | 1954 | ||
| Koehn, Friedrich Gustav Ferdinand | 1959 | ||
| Koehn, Gustav Bernhard Rudolf | 1966 | ||
| Koehn, Ida Auguste Marie | Schoenberg | Koehn Gustav Bernhard Rudolf | 1964 |
| Koehn, Joachim Martin | 1949 | ||
| Koehn, Luise | Krieg | Koehn John | 1928 |