| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jacoba Maria Helfenstein | Child | 1810 | Leiden | |
| Margaretha Maria Brusse-Helfenstein | Registered | 1916 | Amsterdam | Police reports |
| Maria Catharina Helfenstein | Deceased | 1913 | Den Helder | Civil registration deaths |
| Maria Helfenstein | Child | 1836 | Leiden | |
| Maria Helfenstein | Mother | 1883 | Leiden |
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