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Jonas van Oosten, birth 24 Nov 1895 Assen Holland, died 28 Feb 1943 Auschwitz Poland, son of Jacob van Oosten and Roosje Izak Izaks Koopman in huiden en lompen to: Betje van Hartz, birth 1 Jun 1902 Harderwijk Holland, died 29 Oct 1942 Auschwitz Poland, daughter of Maurits van Hartz and Doortje Hammelburg |
| 1) Jacob van Oosten, birth 5 Feb 1936 Emmen Holland, died 29 Oct 1942 Auschwitz Poland |