| Generation 1 - Kramer: Died - 10 Oct 1913 - Rotterdam, Netherlands |
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| Generation 2 - Hugo Gerardus Kramer & Anthonia Agatha Detlijn: Married - 14 Aug 1912 - Rotterdam, Netherlands |
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| Generation 3 - Gerrit Anthonie Detlijn: Born - Abt 1855 - Dordrecht, Netherlands |
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| Generation 3 - Gerrit Anthonie Detlijn: Died - 5 Dec 1931 - Rotterdam, Netherlands |
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| Generation 3 - Gerrit Anthonie Detlijn & Maria Detlijn: Married - 7 Aug 1878 - Rotterdam, Netherlands |
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| Generation 3 - Maria Detlijn: Born - 1 Apr 1856 - Rotterdam, Netherlands |
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| Generation 4 - Anthonie Detlijn & Aagje Kalkman: Married - 23 Aug 1854 - Rotterdam, Netherlands |
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| Generation 4 - Aagje Kalkman: Died - 13 Mar 1890 - Rotterdam, Netherlands |
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