| Family Tree Collection | Main index A-Z | Total index | Names | Sources | Index places | Groningen |
| Family Page |
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| 1) Isidor Hartogs, birth 11 Nov 1878 Groningen, Groningen, Nederland |
| 2) Felix Hartogs, birth 15 Jan 1880 Groningen, Groningen, Nederland, died 13 Nov 1942 Auschwitz, Katowice, Polen |