 | Generation 1 - Diena Feringa: Born - 09 September 1880 - Tange, Onstwedde, Groningen |
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 | Generation 2 - Jan Feringa: Born - 24 November 1846 - Vlagtwedde, Groningen |
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 | Generation 2 - Jan Feringa: Died - 11 October 1931 - Alteveer, Onstwedde, Groningen |
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| Generation 2 - Jan Feringa & Pietertje Roskamp: Married - 14 February 1866 - Vlagtwedde, Groningen |
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 | Generation 2 - Pietertje Roskamp: Born - 25 January 1844 - Nieuwe Pekela, Groningen |
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| Generation 2 - Pietertje Roskamp: Died - 19 April 1931 - Alteveer, Onstwedde, Groningen |
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 | Generation 2 - Tjaakje Fokkes Feringa: Born - Approximately 1813 - Rouen, Haute-Normandie, France |
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| Generation 2 - Tjaakje Fokkes Feringa: Died - 21 January 1891 - Tange, Onstwedde, Groningen |
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 | Generation 3 - Klaas Jaaijen Roskamp: Born - 10 February 1807 - Weener, Ostfriesland, Niedersachsen, Deutschland |
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| Generation 3 - Klaas Jaaijen Roskamp: Died - 09 November 1864 - Tange, Onstwedde, Groningen |
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 | Generation 3 - Klaas Jaaijen Roskamp & Grietje Heeres Addens: Married - 11 March 1836 - Bellingwolde, Groningen |
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| Generation 3 - Grietje Heeres Addens: Born - 18 September 1809 - Bellingwolde, Groningen |
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 | Generation 3 - Grietje Heeres Addens: Died - 29 March 1886 - Onstwedde, Groningen |
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 | Generation 4 - Jaje Klaassens Roskamp: Born - Approximately 1783 - Kirchborgum, Weener, Ostfriesland, Niedersachsen, Deutschland |
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 | Generation 4 - Jaje Klaassens Roskamp: Died - 02 October 1857 - Diele, Weener, Ostfriesland, Niedersachsen, Deutschland |
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 | Generation 4 - Jaje Klaassens Roskamp & Petje Pauls Rand: Married - 24 September 1803 - Stapelmoor, Ostfriesland, Niedersachsen, Deutschland |
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| Generation 4 - Petje Pauls Rand: Born - Approximately 1783 - Diele, Weener, Ostfriesland, Niedersachsen, Deutschland |
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| Generation 4 - Petje Pauls Rand: Died - 24 June 1821 - Diele, Weener, Ostfriesland, Niedersachsen, Deutschland |
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| Generation 4 - Hero Addens: Born - 21 April 1767 - Bellingwolde, Groningen |
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| Generation 4 - Hero Addens: Baptised - 26 April 1767 - Bellingwolde, Groningen |
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| Generation 4 - Hero Addens: Died - 26 June 1818 - Bellingwolde, Groningen |
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| Generation 4 - Aaltje Egberts Wind: Born - 18 February 1774 - Nieuwe Pekela, Groningen |
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| Generation 4 - Aaltje Egberts Wind: Baptised - 27 February 1774 - Nieuwe Pekela, Groningen |
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 | Generation 4 - Aaltje Egberts Wind: Died - 09 January 1859 - Oudeschans, Bellingwolde, Groningen |
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1880 - Date unknown
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