| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jacob Wieger Modderaar | Child | 1891 | Groningen | Civil registration births |
| Jacob Wieger Modderaar | Registered | 1891 | Groningen | Population register |
| Jacob Wieger Modderaar | Registered | 1891 | Coevorden | Population register |
| Jacob Wieger Modderaar | Father | 1920 | Groningen | Civil registration births |
| Jacob Wieger Modderaar | Groom | 1919 | Groningen | Civil registration marriages |
| Jacob Wieger Modderaar | Father | 1921 | Groningen | Civil registration births |
| Jacob Wieger Modderaar | Partner | 1960 | Naarden | Civil registration deaths |
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