| Name | Role | Place | Source | |
|---|---|---|---|---|
| Georgius Aloijsius Johannes van Leeuwen | Registered | 1900 | Utrecht | Population register |
| Georgius Aloysius Johannes van Leeuwen | Child | 1921 | Utrecht | Civil registration births |
| Johannes Georgius Anthonius van Leeuwen | Child | 1904 | Hof van Delft | Civil registration births |
| Johannes Georgius Gerardus van Leeuwen | Registered | 1927 | Haarlem | Population register |
| Johannes Georgius van Leeuwen | Child | 1909 | Hof van Delft | Civil registration births |
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