| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Harmeyer | Mention | 1815 | Heerenveen | Notarial records |
| Jan Harmeyer | Mention | 1810 | Heerenveen | Notarial records |
| Jan Harmeyer | Deceased | 1832 | Leeuwarden, Osnabrück | Civil registration deaths |
| Jan Hendrik Harmeyer | Deceased | 1797 | Rotterdam | Church records burials |
| Jan Hendriks Harmeyer | Father | 1832 | Leeuwarden | Civil registration deaths |
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