| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan W. Singerling | Registered | 1920 | Amsterdam | Workforce registration |
| W. Singerling | Passagier | 1950 | Tandjong Priok | Passenger registers |
| W. Singerling | Passagier | 1950 | Tandjong Priok | Passenger registers |
| W. Singerling | Passagier | 1950 | Tandjong Priok | Passenger registers |
| W. Singerling | Registered | 1895 | Leiden | |
| W. Singerling | Registered | 1892 | Leiden |
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