| Generation 2 - John Diederick Oudsteyn: Born - 24 Oct 1919 - Cook County, Illinois |
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| Generation 2 - John Diederick Oudsteyn & Harriett Louise Gantz: Married - 14 Jan 1939 - Cook County, Illinois |
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| Generation 3 - Gustav Karl Lodewijk Oudsteijn: Born - 9 Feb 1894 - Rotterdam, Netherlands |
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| Generation 3 - Gustav Karl Lodewijk Oudsteijn: Died - Jan 1984 - Sullivan, Moultrie County, Illinois |
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| Generation 3 - Angeline "Angie" DeWitt: Born - Nov 1899 - Illinois |
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| Generation 3 - Herman J. Gantz: Born - Aug 1894 - West Virginia |
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| Generation 4 - Johan Diederik Oudsteyn: Born - 2 Jul 1855 - Amsterdam, Holland |
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| Generation 4 - Johan Diederik Oudsteyn: Buried - 15 Oct 1951 - Acacia Park Cemetery, Chicago, Cook County, Illinois |
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| Generation 4 - Johan Diederik Oudsteyn & Maria Elisabeth ten Bosch: Married - 6 May 1879 - Amsterdam, Holland |
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| Generation 4 - Maria Elisabeth ten Bosch: Born - 11 Sep 1853 - Poederoijen, Holland |
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| Generation 4 - Maria Elisabeth ten Bosch: Buried - 6 May 1938 - Acacia Park Cemetery, Chicago, Cook County, Illinois |
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| Generation 4 - Evert DeWitt: Born - Nov 1874 - Michigan |
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| Generation 4 - Curtus B. Gantz: Born - Jun 1871 - West Virginia |
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| Generation 4 - Souisal: Born - Sep 1871 - Pennsylvania |
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