| Name | Role | Place | Source | |
|---|---|---|---|---|
| Helena Maria van Praag | Relation | 1944 | Oploo | Civil registration deaths |
| Helena Maria van Praag | Deceased | 1945 | St. Anthonis | Prayer card collection |
| Maria Helena van Praag | Child | 1852 | Oudewater | Civil registration births |
| Maria Helena van Praag | Mention | 1902 | Oudewater | Notarial records |
| Maria Helena van Praag | Mention | 1902 | Oudewater | Notarial records |
| Maria Helena van Praag | Mention | 1902 | Oudewater | Notarial records |
| Maria Helena van Praag | Deceased | 1908 | Oudewater | Civil registration deaths |
| Maria Helena van Praag | Mention | 1880 | Oudewater | Notarial records |
| Maria Helena van Praag | Deceased | 1908 | Oudewater | Civil registration deaths |
| Maria Helena van Praag | Child | 1852 | Oudewater | Civil registration births |
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