| Name | Role | Event | DateYear | Place | Source |
|---|---|---|---|---|---|
| J.W. Westerhoff | Registered | Registration | 1940 | Soest | Officiersboekjes |
| J.W. Westerhoff | Passagier | Registration | 1946 | Batavia | Passenger registers |
| J.W. Westerhoff | Signatory | Signature | 1878 | 's-Gravenhage | Verzoekschriften |
| J.W. Westerhoff | Registered | Registration | 1939 | Soest | Officiersboekjes |
| J.W. Westerhoff | Registered | Registration | 1936 | Soest | Officiersboekjes |
| J.W. Westerhoff | Registered | Registration | 1937 | Soest | Officiersboekjes |
| J.W. Westerhoff | Registered | Registration | 1938 | Soest | Officiersboekjes |
| J.W. Westerhoff | Mention | Notariële inschrijving | 24-12-1811 | Nijmegen | Notarial records |
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