| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jacob Aertss Cosyn | Renant | 1680 | Notarial records | |
| Jacob Aertss Cosyn | Renant | 1678 | Notarial records | |
| Jacob Aertss Cosyn | Debtor | 1676 | Notarial records | |
| Jacob Aertss Cosyn | Provider | 1681 | Notarial records | |
| Jacob Aertss Cosyn | Borg | 1681 | Notarial records | |
| Jacob Cosyn | Father | 1635 | Leiden | |
| Jacob Cosyn | Witness | 1592 | Leiden | |
| Jacob Cosyn | Former husband | 1605 | Leiden | |
| Jacob Janss Cousyn (Jacob Janss Cosyn), oom | Personen | 1647 | Notarial records |
Find your ancestors and publish your family tree on Genealogy Online via https://www.genealogieonline.nl/en/