| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jozef Mathieu Janssen | Deceased | 1923 | Broeksittard | Civil registration deaths |
| Jozef Mathieu Janssen | Registered | Antwerpen | Foreigners register | |
| Mathieu Jozef Janssen | Child | 1919 | Heerlen | Civil registration births |
| Mathieu Jozef Janssen | Groom | 1948 | Son en Breugel | Civil registration marriages |
| Mathieu Jozef Janssen | Deceased | 1979 | Heerlen | Prayer card collection |
| Mathieu Jozef Janssen | Deceased | 1979 | Heerlen | Prayer card collection |
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