| Name | Role | Place | Source | |
|---|---|---|---|---|
| Anna Maria Lieffkens | Witness | 1736 | Herpen | Church records baptisms |
| Maria An Hester Lieffkens | Mother | 1750 | Venray | Church records baptisms |
| Maria Anna Lieffkens | Mother | 1753 | Venray | Church records baptisms |
| Maria Elisabet Lieffkens | Mother | 1757 | Venray | Church records baptisms |
| Maria Elisabeth Lieffkens | Child | 1733 | Venray | Church records baptisms |
| Maria Elizabet Lieffkens | Registered | 1764 | Venray | Schepenprotocollen |
| Maria Lieffkens | Registered | 1673 | Amsterdam | Notarial records |
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