| Family Tree Collection | Main index A-Z | Total index | Names | Sources | Index places | Groningen |
| Family Page |
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| 1) Reina de Groot, birth 4 Apr 1892 Groningen, Groningen, Nederland |
| 2) Trijntje de Groot, birth 12 Oct 1896 Groningen, Groningen, Nederland |
| 3) Johannes Christiaan de Groot, birth 29 Apr 1901 Groningen, Groningen, Nederland |