| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gradus Franciscus Koks | Father | 1922 | Ottersum | Civil registration deaths |
| Gradus Franciscus Koks | Father | 1841 | Ottersum | Civil registration births |
| Gradus Franciscus Koks | Father | 1908 | Ottersum | Civil registration deaths |
| Gradus Franciscus Koks | Father | 1844 | Ottersum | Civil registration births |
| Gradus Franciscus Koks | Father | 1837 | Ottersum | Civil registration births |
| Gradus Franciscus Koks | Father of bride | 1871 | Ottersum | Civil registration marriages |
| Gradus Franciscus Koks | Father of groom | 1877 | Ottersum | Civil registration marriages |
| Gradus Koks | Registered | 1840 | Oirschot | Population register |
| Gradus Koks | Father | 1840 | Ottersum | Civil registration births |
| Gradus Koks | Father | 1857 | Ottersum | Civil registration deaths |
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