| Name | Role | Place | Source | |
|---|---|---|---|---|
| Johannes Langbeek | Registered | 1921 | Dordrecht | Population register |
| Johannes Langbeek | Registered | 1921 | Amsterdam | Passport applications |
| Johannes Langbeek | Tewerkgestelde | 's-Gravenhage, Rotterdam | Workforce registration | |
| Johannes Langbeek | Registered | 's-Gravenhage, Rotterdam | Individual Files | |
| Johannes Langbeek | Tewerkgestelde | 's-Gravenhage, Rotterdam | Workforce registration | |
| Johannes Langbeek | Tewerkgestelde | 's-Gravenhage, Rotterdam | Workforce registration | |
| Petrus Johannes Langbeek | Lidmaat | Leeuwarden | DTB Lidmaten | |
| Pieter Johannes Langbeek | Father | 1825 | Leeuwarden | Civil registration births |
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