| Name | Role | Place | Source | |
|---|---|---|---|---|
| Ada Callenbach | Child | 1915 | Nijkerk | Civil registration births |
| Ada Callenbach | Registered | 1913 | 's-Gravenhage | Population register |
| Ada Callenbach | Bride | 1942 | Amersfoort, Nijkerk | Civil registration marriages |
| Ada Callenbach | Registered | 1871 | Nijkerk | Population register |
| Ada Callenbach | Registered | 1871 | Nijkerk | Population register |
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