| Generation 1 - Lambertus Petrus Rietema: Born - Monday 20 May 1889 - Stedum, Groningen, Nederland |
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| Generation 1 - Lambertus Petrus Rietema & Alina Smit: Married - Saturday 24 June 1916 - Uithuizermeeden, Groningen, Nederland |
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| Generation 2 - Siemon Petrus Rietema: Born - Sunday 07 September 1862 - Leens, Groningen, Nederland |
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| Generation 2 - Siemon Petrus Rietema: Died - Sunday 21 June 1925 - Groningen, Groningen, Nederland |
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| Generation 2 - Siemon Petrus Rietema & Froukea Petronella Tapper: Married - Monday 11 June 1888 - Baflo, Groningen, Nederland |
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| Generation 2 - Froukea Petronella Tapper: Born - Friday 23 September 1864 - Baflo, Groningen, Nederland |
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| Generation 3 - Lammert Rietema: Born - Saturday 30 December 1837 - Kloosterburen, Groningen, Nederland |
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| Generation 3 - Lammert Rietema: Died - Monday 09 March 1903 - Leens, Groningen, Nederland |
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| Generation 3 - Lammert Rietema & Johanna Ritsema: Married - Monday 09 December 1861 - Appingedam, Groningen, Nederland |
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| Generation 3 - Johanna Ritsema: Born - Sunday 04 October 1840 - Appingedam, Groningen, Nederland |
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| Generation 3 - Johanna Ritsema: Died - Monday 18 October 1915 - Leens, Groningen, Nederland |
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| Generation 4 - Jan Popkes Ritsema: Born - Saturday 02 March 1799 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 4 - Jan Popkes Ritsema: Baptised - Sunday 10 March 1799 - Eenum, 't Zandt, Groningen, Nederland |
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| Generation 4 - Jan Popkes Ritsema: Died - Monday 25 April 1887 - Appingedam, Groningen, Nederland |
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| Generation 4 - Jan Popkes Ritsema & Harmina Sieuwkes de Boer: Married - Monday 17 August 1818 - Groningen, Groningen, Nederland |
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| Generation 4 - Harmina Sieuwkes de Boer: Born - Sunday 20 September 1795 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Harmina Sieuwkes de Boer: Baptised - Sunday 11 October 1795 - Oosterwijtwerd, 't Zandt, Groningen, Nederland |
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| Generation 4 - Harmina Sieuwkes de Boer: Died - Friday 28 March 1873 - Appingedam, Groningen, Nederland |
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