| Name | Role | Place | Source | |
|---|---|---|---|---|
| Franciscus Koopsmans | Tewerkgestelde | 's-Gravenhage, Helmond | Workforce registration | |
| Jaantje Koopsmans | Overleden vrouw | 1873 | Vrijhoeve-Capelle | Civil registration deaths |
| Koopsmans | Passagier | 1946 | Singapore | Passenger registers |
| Margjen Jans Koopsmans | Mother | 1826 | Aengwirden | Civil registration births |
| Maria Koopsmans | Mother | 1729 | Amsterdam | Church records baptisms |
| Pietje Heins Koopsmans | Transferor | 1825 | Franeker | Notarial records |
| Rentje Heersma Koopsmans | Registered | 1786 | IJlst | Population register |
| Sikke Koopsmans | Conscript | 1891 | Militia records | |
| T. Koopsmans | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| Thomas Koopsmans | Witness | 1729 | Amsterdam | Church records baptisms |
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