| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gerrit van Croonenborg | Conscript | 1928 | Helder | Militia records |
| Gerrit van Croonenborg | Registered | 1908 | Den Helder | Population register |
| Gerrit van Croonenborg | Groom | 1930 | Rotterdam | Civil registration marriages |
| Gerrit van Croonenborg | Decorated | 's-Gravenhage | Registration honors | |
| Gerrit van Croonenborg | Groom | 1930 | Rotterdam | Civil registration marriages |
| Gerrit van Croonenborg | Registered | 1928 | Militia records | |
| Gerrit van Croonenborg | Krijgsgevangene | 1943 | Amersfoort, Den Helder | Krijgsgevangenedossier |
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