Jan Frederik van Beeck Calkoen
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Jan Frederik van Beeck Calkoen
 1838-Yes, date unknown
| Jan Frederik van Beeck Calkoen | |
| B: | 1838 | 
| Utrecht, Utrecht, Netherlands | |
| D: | Yes, date unknown | 
Maria Elizabeth Boissevain
 1841-1919
| Maria Elizabeth Boissevain | |
| B: | 1841 | 
| Amsterdam, Noord-Holland, Netherlands | |
| D: | 1919 | 
| Alphen, Zuid-Holland, Netherlands | |


