| Generation 1 - Boelo Biel: Born - November 1920 - Onstwedde, Groningen, Nederland |
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| Generation 1 - Boelo Biel: Died - Thursday 02 December 1920 - Musselkanaal, Onstwedde, Groningen, Nederland |
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| Generation 2 - Popko Biel: Born - Saturday 08 August 1891 - Oude Pekela, Groningen, Nederland |
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| Generation 2 - Popko Biel: Buried - - 's-Graveland, Noord-Holland, Nederland |
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| Generation 2 - Popko Biel & Arentje Gankema: Married - Saturday 23 November 1912 - Veendam, Groningen, Nederland |
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| Generation 2 - Arentje Gankema: Born - Saturday 20 September 1890 - Veendam, Groningen, Nederland |
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| Generation 2 - Arentje Gankema: Died - Monday 05 June 1967 - 's-Graveland, Noord-Holland, Nederland |
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| Generation 2 - Arentje Gankema: Buried - - 's-Graveland, Noord-Holland, Nederland |
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| Generation 3 - Jan Biel: Born - Tuesday 28 December 1858 - Wildervank, Groningen, Nederland |
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| Generation 3 - Jan Biel: Died - Monday 18 January 1943 - Sappemeer, Groningen, Nederland |
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| Generation 3 - Jan Biel & Maria Holtman: Married - Saturday 30 November 1889 - Sappemeer, Groningen, Nederland |
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| Generation 3 - Maria Holtman: Born - Saturday 23 May 1863 - Oude Pekela, Groningen, Nederland |
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| Generation 3 - Maria Holtman: Died - Friday 19 April 1918 - Sappemeer, Groningen, Nederland |
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| Generation 3 - Boele Gankema: Born - Sunday 11 September 1853 - Kropswolde, Hoogezand, Groningen, Nederland |
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| Generation 3 - Boele Gankema: Died - Friday 15 January 1937 - Muntendam, Groningen, Nederland |
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| Generation 3 - Boele Gankema & Siepke Beuker: Married - Saturday 18 May 1878 - Veendam, Groningen, Nederland |
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| Generation 3 - Siepke Beuker: Born - Sunday 12 February 1854 - Borgercompagnie, Veendam, Groningen, Nederland |
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| Generation 3 - Siepke Beuker: Died - Tuesday 01 March 1910 - Ommelanderwijk, Veendam, Groningen, Nederland |
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| Generation 4 - Hindrik Gankema: Born - Monday 10 October 1825 - Groningen, Groningen, Nederland |
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| Generation 4 - Hindrik Gankema: Died - Monday 11 September 1899 - Ommelanderwijk, Veendam, Groningen, Nederland |
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| Generation 4 - Hindrik Gankema & Marchien Landman: Married - Saturday 21 May 1853 - Zuidlaren, Drenthe, Nederland |
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| Generation 4 - Marchien Landman: Born - Wednesday 20 October 1819 - Hoogezand, Groningen, Nederland |
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| Generation 4 - Marchien Landman: Died - Saturday 16 March 1895 - Zuidlaren, Drenthe, Nederland |
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