| Name | Role | Place | Source | |
|---|---|---|---|---|
| J. Mersel | Travelers | 1967 | Rotterdam | Passenger registers |
| J. Mersel | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| J. Mersel | Tewerkgestelde | 's-Gravenhage, Rotterdam | Workforce registration | |
| J. Mersel | Tewerkgestelde | 's-Gravenhage, Rotterdam | Workforce registration | |
| J. Mersel | Tewerkgestelde | 's-Gravenhage, Rotterdam | Workforce registration | |
| J. Mersel | Tewerkgestelde | 's-Gravenhage | Workforce registration | |
| Wilhelmus J. Mersel | Registered | Sas van Gent | Population register | |
| Wilhelmus J. Mersel | Registered | Sas van Gent | Population register |
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