| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jacob Lefer | Father | 1686 | Amsterdam | Church records baptisms |
| Jacob Lefer | Registered | 1678 | Amsterdam | Notarial records |
| Jacob Lefer | Registered | 1681 | Amsterdam | Church records burials |
| Jacob Lefer | Father | 1688 | Amsterdam | Church records baptisms |
| Jacob Lefer | Registered | 1694 | Amsterdam | Church records burials |
| Jacob Lefer | Father | 1686 | Amsterdam | Church records baptisms |
| Jacob Lefer | Witness | 1887 | Anderlecht | Civil registration marriages |
| Jacob Lefer | Father | 1688 | Amsterdam | Church records baptisms |
| Jacob Lefer | Groom | 1679 | Amsterdam | Register of notices of marriage |
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