| Generation 1 - Jan Sijwke Ritsema: Born - Thursday 08 January 1852 - Appingedam, Groningen, Nederland |
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| Generation 1 - Jan Sijwke Ritsema: Died - Tuesday 28 June 1898 - Laren, Noord-Holland, Nederland |
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| Generation 1 - Jan Sijwke Ritsema & Annechien Helena Brons: Married - Thursday 10 April 1890 - Nieuwe Pekela, Groningen, Nederland |
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| Generation 2 - Sijfke Jans Ritsema: Born - Tuesday 16 October 1821 - Hellum, Slochteren, Groningen, Nederland |
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| Generation 2 - Sijfke Jans Ritsema: Died - Friday 25 February 1870 - Appingedam, Groningen, Nederland |
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| Generation 2 - Sijfke Jans Ritsema & Anje Tjarks de Boer: Married - Friday 30 May 1851 - Appingedam, Groningen, Nederland |
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| Generation 2 - Anje Tjarks de Boer: Born - Monday 19 February 1821 - Uitwierde, Delfzijl, Groningen, Nederland |
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| Generation 2 - Anje Tjarks de Boer: Died - Monday 09 May 1864 - Appingedam, Groningen, Nederland |
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| Generation 3 - Jan Popkes Ritsema: Born - Saturday 02 March 1799 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 3 - Jan Popkes Ritsema: Baptised - Sunday 10 March 1799 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 3 - Jan Popkes Ritsema: Died - Monday 25 April 1887 - Appingedam, Groningen, Nederland |
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| Generation 3 - Jan Popkes Ritsema & Harmina Sieuwkes de Boer: Married - Monday 17 August 1818 - Groningen, Groningen, Nederland |
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| Generation 3 - Harmina Sieuwkes de Boer: Born - Sunday 20 September 1795 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 3 - Harmina Sieuwkes de Boer: Baptised - Sunday 11 October 1795 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 3 - Harmina Sieuwkes de Boer: Died - Friday 28 March 1873 - Appingedam, Groningen, Nederland |
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| Generation 3 - Tjark Fokkes de Boer: Born - Wednesday 31 August 1791 - Uitwierde, Delfzijl, Groningen, Nederland |
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| Generation 3 - Tjark Fokkes de Boer: Baptised - Sunday 11 September 1791 - Uitwierde, Delfzijl, Groningen, Nederland |
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| Generation 3 - Tjark Fokkes de Boer: Died - Friday 12 March 1869 - Appingedam, Groningen, Nederland |
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| Generation 3 - Tjark Fokkes de Boer & Grietje Pieters Kuiper: Married - Tuesday 04 April 1815 - Groningen, Groningen, Nederland |
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| Generation 3 - Grietje Pieters Kuiper: Born - Saturday 26 December 1789 - Zuidhorn, Groningen, Nederland |
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| Generation 3 - Grietje Pieters Kuiper: Baptised - Sunday 10 January 1790 - Zuidhorn, Groningen, Nederland |
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| Generation 3 - Grietje Pieters Kuiper: Died - Thursday 25 January 1872 - Uitwierde, Delfzijl, Groningen, Nederland |
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| Generation 4 - Popke Jans Ritsema: Born - 1761 - Hornhuizen, Kloosterburen, Groningen, Nederland |
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| Generation 4 - Popke Jans Ritsema: Baptised - Saturday 26 December 1761 - Hornhuizen, Kloosterburen, Groningen, Nederland |
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| Generation 4 - Popke Jans Ritsema: Died - Saturday 07 June 1806 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 4 - Popke Jans Ritsema: Buried - Wednesday 11 June 1806 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 4 - Popke Jans Ritsema & Anje Pieters Steenhuis: Married - Thursday 17 May 1798 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 4 - Anje Pieters Steenhuis: Born - 1762 - Westeremden, Stedum, Groningen, Nederland |
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| Generation 4 - Anje Pieters Steenhuis: Baptised - Sunday 24 October 1762 - Westeremden, Stedum, Groningen, Nederland |
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| Generation 4 - Anje Pieters Steenhuis: Died - Monday 26 June 1826 - Leermens, 't Zandt, Groningen, Nederland |
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| Generation 4 - Sieuwke Tiddes de Boer: Born - 1755 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Sieuwke Tiddes de Boer: Baptised - Sunday 26 January 1755 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Sieuwke Tiddes de Boer: Died - Sunday 06 January 1828 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Sieuwke Tiddes de Boer & Martje Harms: Married - Sunday 13 March 1791 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Martje Harms: Born - 1769 - Stedum, Groningen, Nederland |
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| Generation 4 - Martje Harms: Baptised - Monday 27 March 1769 - Stedum, Groningen, Nederland |
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| Generation 4 - Martje Harms: Buried - Monday 13 January 1806 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Fokke Jans de Boer: Born - Thursday 25 February 1740 - Opwierde, Appingedam, Groningen, Nederland |
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| Generation 4 - Fokke Jans de Boer: Baptised - Friday 18 March 1740 - Opwierde, Appingedam, Groningen, Nederland |
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| Generation 4 - Fokke Jans de Boer: Died - Monday 19 May 1823 - Uitwierde, Delfzijl, Groningen, Nederland |
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| Generation 4 - Fokke Jans de Boer & Aafke Pieters van Buren: Married - Sunday 05 July 1772 - Uitwierde, Delfzijl, Groningen, Nederland |
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| Generation 4 - Aafke Pieters van Buren: Born - 1752 - Holwierde, Bierum, Groningen, Nederland |
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| Generation 4 - Aafke Pieters van Buren: Baptised - Sunday 16 April 1752 - Holwierde, Bierum, Groningen, Nederland |
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| Generation 4 - Pieter Harms Kuiper: Died - Saturday 03 November 1804 - Westeremden, Stedum, Groningen, Nederland |
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| Generation 4 - Martje Klaasens Dijkema: Born - 1756 - Huizinge, Middelstum, Groningen, Nederland |
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| Generation 4 - Martje Klaasens Dijkema: Baptised - Sunday 15 February 1756 - Huizinge, Middelstum, Groningen, Nederland |
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