| Name | Role | Event | DateYear | Place | Source |
|---|---|---|---|---|---|
| Maria Helena Catharina Collas | Mother | Birth | 27-10-1915 | Oud-Vroenhoven | Civil registration births |
| Maria Helena Collas | Child | Birth | 20-5-1903 | Maastricht | Civil registration births |
| Maria Helena Collas | Registered | Registration | Maastricht | Population register |
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