| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Carel Boomkamp, van leeuwen | Decorated | 's-Gravenhage | Registration honors | |
| Jan Carel van Leeuwen Boomkamp | Registered | 1906 | Amsterdam | Pension registry |
| Jan Carel van Leeuwen Boomkamp | Registered | 1906 | Borculo | Police register |
| Jan Carel van Leeuwen Boomkamp | Registered | 1895 | Population register | |
| Jan Carel van Leeuwen Boomkamp | Registered | Lochem | Population register | |
| Jan Carel van Leeuwen Boomkamp | Child | 1906 | Borculo | Civil registration births |
| Jan Carel van Leeuwen Boomkamp | Registered | 1900 | Borculo | Population register |
| Jan Carel van Leeuwen boomkamp | Decorated | 's-Gravenhage | Registration honors |
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