| Generation 1 - Prof. Dr. Hendrik Bolkestein: Born - Tuesday 18 December 1877 - Amsterdam, Noord-Holland, Nederland |
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| Generation 1 - Prof. Dr. Hendrik Bolkestein: Died - Friday 24 July 1942 - Utrecht, Utrecht, Nederland |
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| Generation 1 - Prof. Dr. Hendrik Bolkestein & Dina Catharina Elisabeth Pouw: Married - Thursday 04 October 1906 - Amsterdam, Noord-Holland, Nederland |
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| Generation 1 - Prof. Dr. Hendrik Bolkestein & Dina Catharina Elisabeth Pouw: Divorced - Friday 26 February 1932 - Amsterdam, Noord-Holland, Nederland |
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| Generation 2 - Klaas Bolkestein: Born - 1841 - Huizen, Noord-Holland, Nederland |
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| Generation 2 - Klaas Bolkestein & Fijtje Haring: Married - Thursday 04 February 1869 - Weesp, Noord-Holland, Nederland |
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| Generation 2 - Fijtje Haring: Born - Wednesday 29 November 1837 - Diemen, Noord-Holland, Nederland |
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| Generation 3 - Gerrit Bolkestein: Born - About 1803 - Haarlem, Noord-Holland, Nederland |
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| Generation 3 - Gerrit Bolkestein & Lubberta Overmars: Married - Wednesday 25 July 1827 - Amsterdam, Noord-Holland, Nederland |
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| Generation 3 - Lubberta Overmars: Born - About 1797 - Hasselt, Overijssel, Nederland |
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| Generation 4 - Engelbertus Overmars: Born - About 1758 - Den Ham, Overijssel, Nederland |
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| Generation 4 - Engelbertus Overmars: Died - Monday 28 February 1842 - Hasselt, Overijssel, Nederland |
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| Generation 4 - Johanna Metsger: Born - About 1767 - Amsterdam, Noord-Holland, Nederland |
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| Generation 4 - Johanna Metsger: Died - Sunday 12 July 1840 - Hasselt, Overijssel, Nederland |
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