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| Family page | 
| Izak Mozes de Groot, birth 1781 Steenwijkerwold, Overijssel, Nederland, died 21 Feb 1850 Steenwijk, Overijssel, Nederland, son of Mozes de Groot and Leentje Simons
 to: Lotje Abraham Salomon Pos, birth 1765 Emden, Hannover, Duitsland, died 13 Sep 1843 Steenwijk, Overijssel, Nederland, daughter of Samuel Pos and Cornelia van den Berg | 
| 1) Simon Izaak de Groot, birth 1799 Steenwijk, Overijssel, Nederland, died 17 Sep 1863 Steenwijk, Overijssel, Nederland Married 3 MEI 1837 Steenwijk, Overijssel, Nederland to: Mientje Mannes Marcus Wijnberg, birth 1806 Diever, Drenthe, Nederland, died 7 Feb 1849 Steenwijk, Overijssel, Nederland, daughter of Mannes or Manuel Izaak or Izak Wijnberg and Saartje Hartog or Hertz Hartogs | 
| 2) Betje Izaac de Groot, birth 10 Jan 1800 Steenwijk, Overijssel, Nederland, died 17 Jul 1848 Steenwijk, Overijssel, Nederland Married 11 Feb 1823 Steenwijk, Overijssel, Nederland to: Mozes Marcus de Leeuw, birth 1800 Steenwijk, Overijssel, Nederland, died 1 Feb 1864 Steenwijk, Overijssel, Nederland, son of Marcus Isaak de Leeuw and Sara Isaak van Gelder | 
| 3) Mozes Isaac de Groot, birth 23 Apr 1803 Steenwijk, Overijssel, Nederland, died 9 Dec 1867 Steenwijk, Overijssel, Nederland
 to: Rachel Salomon Arons, birth 1810 Bellingwolde, Groningen, Nederland, died 13 Dec 1879 Steenwijk, Overijssel, Nederland, daughter of Salomon Aron Arons and Boele or Bule Kosses | 
| 4) Salomon de Groot, birth 26 Feb 1805 Steenwijk, Overijssel, Nederland | 
| 5) Leentje Izaaks de Groot, birth 14 Nov 1806 Steenwijk, Overijssel, Nederland, died 29 Sep 1882 Steenwijk, Overijssel, Nederland Married 27 Apr 1832 Steenwijk, Overijssel, Nederland to: Salomon Samson Polak, birth 18 Jul 1808 Emden, Hannover, Duitsland, died 24 MRT 1883 Steenwijk, Overijssel, Nederland, son of Samson Abraham Polak and Rachel Mozes COHEN or Hollander | 
| 6) Cornelia Isaac or Izaks de Groot, birth 10 MRT 1808 Zuidveen, Steenwijk, Overijssel, Nederland, died 1 Jul 1896 Steenwijk, Overijssel, Nederland Married 11 MRT 1830 Steenwijk, Overijssel, Nederland to: Salomon Joseph Keijzer, birth 1802 Meppel, Drenthe, Nederland, died 22 MEI 1887 Steenwijk, Overijssel, Nederland, occupation: Onderwijzer, son of Joseph Mannes Cosman Keijzer and Judith Edersheim | 
| 7) Hartog de Groot, birth 28 MRT 1811 Steenwijk, Overijssel, Nederland, died 14 Sep 1843 Steenwijk, Overijssel, Nederland | 
| Family page | 
| Izak Mozes de Groot Married 6 Dec 1848 Steenwijk, Overijssel, Nederland to: Roosje Salomon Arons, birth 1808 Bellingwolde, Groningen, Nederland, died 14 Sep 1881 Steenwijk, Overijssel, Nederland 1st marriage 2nd marriage, daughter of Salomon Aron Arons and Boele or Bule Kosses | 
| 1) David de Groot, birth 8 Jun 1849 Steenwijk, Overijssel, Nederland |