| Generation 1 - Trijntje de Jonge: Born - Wednesday 25 October 1882 - Westerdiep, Veendam, Groningen, Nederland |
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| Generation 1 - Trijntje de Jonge: Died - Tuesday 11 March 1924 - Veendam, Groningen, Nederland |
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| Generation 1 - Trijntje de Jonge & Reinard Vegter: Married - Thursday 19 August 1920 - Veendam, Groningen, Nederland |
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| Generation 2 - Egbert de Jonge: Born - Wednesday 05 February 1851 - Kalkwijk, Hoogezand, Groningen, Nederland |
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| Generation 2 - Egbert de Jonge: Died - Friday 22 December 1893 - Wildervank, Groningen, Nederland |
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| Generation 2 - Egbert de Jonge & Eiltje Strengholt: Married - Wednesday 29 March 1876 - Veendam, Groningen, Nederland |
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| Generation 2 - Eiltje Strengholt: Born - Monday 24 February 1851 - Warffum, Groningen, Nederland |
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| Generation 2 - Eiltje Strengholt: Died - Date unknown - Wildervank, Groningen, Nederland |
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| Generation 3 - Jozef Martinus Strengholt: Born - Monday 14 October 1822 - Groningen, Groningen, Nederland |
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| Generation 3 - Jozef Martinus Strengholt: Died - Tuesday 02 February 1904 - Veendam, Groningen, Nederland |
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| Generation 3 - Jozef Martinus Strengholt & Trientje Gerrits Hartsema: Married - Friday 26 April 1850 - Middelstum, Groningen, Nederland |
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| Generation 3 - Trientje Gerrits Hartsema: Born - Sunday 15 June 1828 - Warffum, Groningen, Nederland |
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| Generation 3 - Trientje Gerrits Hartsema: Died - Wednesday 09 November 1904 - Veendam, Groningen, Nederland |
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