| Name | Role | Place | Source | |
|---|---|---|---|---|
| Frederik Dirk Duijs | Registered | 1913 | Haarlem | Militia records |
| Frederik Dirk Duijs | Registered | 1893 | Amsterdam | Pension registry |
| Frederik Dirk Duijs | Registered | 1950 | Amsterdam | Police reports |
| Frederik Dirk Duijs | Conscript | 1913 | Haarlem | Militia records |
| Frederik Dirk Duijs | Registered | 1950 | Amsterdam | Police reports |
| Frederik Dirk Duijs | Groom | 1918 | Haarlem | Civil registration marriages |
| Frederik Dirk Duijs | Child | 1893 | Haarlem | Civil registration births |
| Frederik Dirk Duijs | Registered | 1900 | Haarlem | Population register |
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