| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gijsbert Fock | Father | 1747 | Heusden | Church records burials |
| Gijsbert Fock | Father | 1783 | Heusden | Church records baptisms |
| Gijsbert Fock | Father | 1747 | Heusden | Church records burials |
| Gijsbert Fock | Father | 1737 | Heusden | Church records baptisms |
| Gijsbert Fock | Father | 1731 | Heusden | Church records baptisms |
| Gijsbert Fock | Father | 1728 | Heusden | Church records baptisms |
| Gijsbert Jansen Fock | Groom | 1668 | Zuilen | Church records marriages |
| Gijsbert Jansz Fock | Father | 1671 | Zuilen | Church records baptisms |
| Gijsbert Jansz Fock | Father | 1669 | Utrecht | Church records baptisms |
| Gijsbert Pietersz Fock | Mention | 1702 | Woerden | Notarial records |
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