| Name | Role | Place | Source | |
|---|---|---|---|---|
| Volkhart W Wirth Roeper Bos | Tewerkgestelde | 's-Gravenhage, Arnhem | Workforce registration | |
| W. Wirth | Registered | 1900 | Amsterdam | Family cards |
| W. Wirth | Military | Studbooks | ||
| W. Wirth | Travelers | 1928 | New York | Passenger registers |
| W. Wirth | Travelers | 1950 | Rotterdam | Passenger registers |
| W. Wirth | Travelers | 1954 | Rotterdam | Passenger registers |
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