| Name | Role | Place | Source | |
|---|---|---|---|---|
| Martieu Jansen | Tewerkgestelde | 's-Gravenhage, Venlo | Workforce registration | |
| Mathieu Janssens | Tewerkgestelde | 's-Gravenhage | Workforce registration | |
| Mathieu Janssens | Tewerkgestelde | 's-Gravenhage | Workforce registration | |
| Mathieu Johan Leonard Janssen | Registered | Maasbree | Population register | |
| Mathieu Johan Leonard Janssen | Child | 1890 | Venlo | Civil registration births |
| Mathieu Johan Leonard Janssen | Father | 1914 | Blerick | Civil registration births |
| Mathieu Johan Leonard Janssen | Child | 1890 | Venlo | Civil registration births |
| Mathieu Johan Leonard Janssen | Registered | 's-Gravenhage, Venlo | CABR dossiers |
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