| Name | Role | Place | Source | |
|---|---|---|---|---|
| Frans Anthony Posthuma | Mention | 1832 | Harlingen | Notarial records |
| Frans Anthony Posthuma | Mention | 1832 | Harlingen | Notarial records |
| Frans Anthony Posthuma | Father | 1815 | Harlingen | Civil registration births |
| Frans Anthony Posthuma | Deceased | 1849 | Harlingen | Civil registration deaths |
| Frans Anthony Posthuma | Father | 1860 | Harlingen | Civil registration deaths |
| Frans Anthony Posthuma | Father of bride | 1838 | Harlingen | Civil registration marriages |
| Frans Anthony Posthuma | Father of groom | 1849 | Harlingen | Civil registration marriages |
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