| Generation 1 - Jan Werkman: Born - Friday 23 February 1883 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 1 - Jan Werkman: Died - Friday 18 January 1929 - Grootegast, Groningen, Nederland |
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| Generation 2 - Derk Werkman: Born - Wednesday 02 August 1837 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 2 - Derk Werkman: Died - Sunday 15 January 1922 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 2 - Derk Werkman & Elizabeth Suurling: Married - Friday 05 May 1865 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 2 - Elizabeth Suurling: Born - Tuesday 20 August 1844 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 2 - Elizabeth Suurling: Died - Wednesday 22 March 1922 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 3 - Jan Geerts Werkman: Born - 1799 - Veendam, Groningen, Nederland |
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| Generation 3 - Jan Geerts Werkman: Baptised - Sunday 20 January 1799 - Veendam, Groningen, Nederland |
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| Generation 3 - Jan Geerts Werkman: Died - Thursday 15 January 1874 - Midwolda, Groningen, Nederland |
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| Generation 3 - Jan Geerts Werkman & Fennigjen Hindriks Negen: Married - Friday 02 December 1825 - Scheemda, Groningen, Nederland |
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| Generation 3 - Fennigjen Hindriks Negen: Born - 1803 - Veendam, Groningen, Nederland |
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| Generation 3 - Fennigjen Hindriks Negen: Baptised - Sunday 15 May 1803 - Veendam, Groningen, Nederland |
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| Generation 3 - Fennigjen Hindriks Negen: Died - Thursday 14 February 1861 - Midwolda, Groningen, Nederland |
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| Generation 3 - Jan Jans Suurling: Born - Wednesday 04 October 1815 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 3 - Jan Jans Suurling: Died - Friday 08 June 1883 - Midwolda, Groningen, Nederland |
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| Generation 3 - Jan Jans Suurling & Antje Hindriks in 't Hout: Married - Wednesday 18 May 1842 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 3 - Antje Hindriks in 't Hout: Born - Sunday 22 June 1817 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 3 - Antje Hindriks in 't Hout: Died - Monday 04 June 1906 - Finsterwolde, Groningen, Nederland |
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| Generation 4 - Hindrik Jacobs Negen: Born - 1759 - Veendam, Groningen, Nederland |
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| Generation 4 - Hindrik Jacobs Negen: Baptised - Sunday 28 January 1759 - Veendam, Groningen, Nederland |
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| Generation 4 - Hindrik Jacobs Negen: Died - Monday 20 March 1820 - Zuidwending, Veendam, Groningen, Nederland |
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| Generation 4 - Hindrik Jacobs Negen & Liefke Alberts: Married - Sunday 31 August 1783 - Veendam, Groningen, Nederland |
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| Generation 4 - Liefke Alberts: Born - 1763 - Veendam, Groningen, Nederland |
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| Generation 4 - Liefke Alberts: Baptised - July 1763 - Wildervank, Groningen, Nederland |
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| Generation 4 - Liefke Alberts: Died - Thursday 23 August 1821 - Zuidwending, Veendam, Groningen, Nederland |
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| Generation 4 - Jan Jans Suurling: Born - Friday 12 February 1779 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 4 - Jan Jans Suurling: Died - Monday 21 February 1853 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 4 - Jan Jans Suurling & Elisabet Harms Heel: Married - Sunday 17 April 1808 - Oostwold, Midwolda, Groningen, Nederland |
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| Generation 4 - Elisabet Harms Heel: Born - Thursday 18 September 1788 - Heveskes, Delfzijl, Groningen, Nederland |
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| Generation 4 - Elisabet Harms Heel: Baptised - Sunday 21 September 1788 - Heveskes, Delfzijl, Groningen, Nederland |
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| Generation 4 - Elisabet Harms Heel: Died - Sunday 08 December 1861 - Midwolda, Groningen, Nederland |
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| Generation 4 - Hindrik Jans in 't Hout: Born - Wednesday 23 July 1788 - Midwolda, Groningen, Nederland |
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| Generation 4 - Hindrik Jans in 't Hout: Baptised - Sunday 27 July 1788 - Midwolda, Groningen, Nederland |
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| Generation 4 - Hindrik Jans in 't Hout & Grietje Cornelius: Married - Sunday 02 January 1814 - Midwolda, Groningen, Nederland |
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| Generation 4 - Grietje Cornelius: Born - 1785 - Beerta, Groningen, Nederland |
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| Generation 4 - Grietje Cornelius: Baptised - Sunday 04 December 1785 - Beerta, Groningen, Nederland |
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| Generation 4 - Grietje Cornelius: Died - Thursday 03 March 1870 - Midwolda, Groningen, Nederland |
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