| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Cleven | Partij | 1910 | Heerlen | Notarial records |
| Constant Cleven | Genoemde | 1909 | Heerlen | Notarial records |
| Constant Cleven | Deceased | 1927 | Prayer card collection | |
| Constant Cleven | Widower | 1966 | Heerlen | Prayer card collection |
| Constant Cleven | Partij | 1910 | Heerlen | Notarial records |
| Constant Cleven | Partij | 1909 | Heerlen | Notarial records |
| Constant Cleven | Witness | 1912 | Heerlen | Notarial records |
| Jozef Constant Maria Cleven | Decorated | 's-Gravenhage | Registration honors | |
| Jozef Constant Maria Cleven | Child | 1917 | Heerlen | Civil registration births |
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