| Name | Role | Place | Source | |
|---|---|---|---|---|
| Benjamin Levie Colthof | Mention | 1917 | Opsterland | Notarial records |
| Benjamin Levie Colthof | Mention | 1919 | Opsterland | Notarial records |
| Benjamin Levie Colthof | Verkrijger | 1917 | Opsterland | Notarial records |
| Benjamin Levie Colthof | Mention | 1918 | Opsterland | Notarial records |
| Levie Benjamin Colthof | Father | 1937 | Rotterdam | Civil registration deaths |
| Levie Benjamin Colthof | Father | 1937 | Rotterdam | Civil registration deaths |
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