| Name | Role | Place | Source | |
|---|---|---|---|---|
| Hendrica M. van Heukelum | Registered | 1910 | Nijmegen | Population register |
| Henriette M. van Heukelum | Registered | 1900 | Nijmegen | Population register |
| Josephina M van Heukelum | Registered | 1864 | Purmerend | Population register |
| M. van Heukelum | Mention | Correspondence | ||
| M. van Heukelum | Registered | 1893 | De Werken en Sleeuwijk | Population register |
| M. van Heukelum | Registered | 1894 | De Werken en Sleeuwijk | Population register |
| M. van Heukelum | Registered | 1870 | De Werken en Sleeuwijk | Population register |
| M. van Heukelum | Registered | 1910 | Amsterdam | Family cards |
| Nicolaas Wilhelmus Antonius J. M. H. van Heukelum | Deceased | 1868 | Nijmegen | Civil registration deaths |
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