| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Claesz Cock | Registered | 1633 | Amsterdam | Notarial records |
| Jan Claesz Cock | Registered | 1644 | Amsterdam | Notarial records |
| Jan Claesz Cock | Relation | 1635 | Alkmaar | Church records burials |
| Jan Claesz Cock | Child | 1672 | Leiden | |
| Jan Claesz zijn kint Cock | Deceased | 1635 | Alkmaar | Church records burials |
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