| Generation 1 - Steffen van der Vlag: Born - Monday 12 April 1909 - Ulrum, Groningen, Nederland |
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| Generation 2 - Steffen van der Vlag: Born - Saturday 12 April 1873 - Stadskanaal, Groningen, Nederland |
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| Generation 2 - Steffen van der Vlag: Died - Tuesday 27 January 1959 - Oude Pekela, Groningen, Nederland |
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| Generation 2 - Steffen van der Vlag & Andrea Roosje: Married - Saturday 26 November 1892 - Wildervank, Groningen, Nederland |
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| Generation 2 - Andrea Roosje: Born - Monday 24 June 1872 - Stadskanaal, Groningen, Nederland |
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| Generation 2 - Andrea Roosje: Died - Sunday 11 December 1949 - Oude Pekela, Groningen, Nederland |
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| Generation 3 - Roelf van der Vlag: Born - Sunday 25 January 1852 - Onstwedde, Groningen, Nederland |
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| Generation 3 - Roelf van der Vlag: Died - Tuesday 29 January 1924 - Wildervank, Groningen, Nederland |
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| Generation 3 - Roelf van der Vlag & Fenna Hazelhof: Married - Saturday 15 March 1873 - Onstwedde, Groningen, Nederland |
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| Generation 3 - Fenna Hazelhof: Born - Saturday 21 May 1853 - Onstwedde, Groningen, Nederland |
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| Generation 3 - Fenna Hazelhof: Died - Thursday 24 February 1944 - Wildervank, Groningen, Nederland |
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| Generation 4 - Steffen van der Vlag: Born - Sunday 25 July 1830 - Bellingwolde, Groningen, Nederland |
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| Generation 4 - Steffen van der Vlag: Died - Thursday 09 January 1902 - Oude Pekela, Groningen, Nederland |
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| Generation 4 - Steffen van der Vlag & Ike Baalman: Married - Saturday 11 November 1865 - Wildervank, Groningen, Nederland |
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| Generation 4 - Ike Baalman: Born - Thursday 01 February 1827 - Bellingwolde, Groningen, Nederland |
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| Generation 4 - Ike Baalman: Died - Tuesday 29 November 1898 - Stadskanaal, Groningen, Nederland |
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| Generation 4 - Thijs Kaspers Hazelhof: Born - Approximately 1818 - Winschoten, Groningen, Nederland |
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| Generation 4 - Johanna Boltendal: Born - Friday 03 December 1824 - Bellingwolde, Groningen, Nederland |
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| Generation 4 - Johanna Boltendal: Died - Thursday 23 May 1912 - Oude Pekela, Groningen, Nederland |
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