| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Dockx | Witness | 1897 | Brussel | Civil registration marriages |
| Constant Léopold Jean Dockx | Groom | 1907 | Schaarbeek | Civil registration marriages |
| Francois Louis Constant Dockx | Registered | 1908 | Turnhout | Population register |
| Francois Louis Constant Dockx | Registered | Uden | Population register | |
| Jozef Constant Dockx | Lid | 1928 | Gent | Ledenkaarten |
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