| Generation 1 - Anna Maria Hubertiena Mahler: Born - Sunday 31 May 1891 - Zutphen, Gelderland, Nederland |
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| Generation 1 - Anna Maria Hubertiena Mahler: Died - Sunday 07 June 1891 - Zutphen, Gelderland, Nederland |
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| Generation 2 - Werner Louis Frederik Mahler: Born - Friday 04 February 1848 - Zutphen, Gelderland, Nederland |
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| Generation 2 - Werner Louis Frederik Mahler: Died - Wednesday 11 May 1932 - Nijmegen, Gelderland, Nederland |
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| Generation 2 - Werner Louis Frederik Mahler & Adelheid Hubertina Petronella Esser: Married - Tuesday 08 June 1880 - Venray, Limburg, Nederland |
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| Generation 2 - Adelheid Hubertina Petronella Esser: Born - Monday 07 November 1853 - Venray, Limburg, Nederland |
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| Generation 2 - Adelheid Hubertina Petronella Esser: Died - Monday 07 July 1913 - Nijmegen, Gelderland, Nederland |
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| Generation 2 - Adelheid Hubertina Petronella Esser: Buried - Wednesday 09 July 1913 - Zutphen, Gelderland, Nederland |
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| Generation 3 - Anton Friedrich Franz Mähler: Born - Sunday 24 November 1811 - Damme, Niedersachsen, Deutschland |
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| Generation 3 - Anton Friedrich Franz Mähler: Died - Tuesday 07 January 1890 - Zutphen, Gelderland, Nederland |
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| Generation 3 - Anton Friedrich Franz Mähler & Anna Maria Christina Sprenger: Married - Thursday 19 August 1841 - Zutphen, Gelderland, Nederland |
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| Generation 3 - Anna Maria Christina Sprenger: Born - Friday 12 July 1816 - Damme, Niedersachsen, Deutschland |
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| Generation 3 - Anna Maria Christina Sprenger: Died - Tuesday 10 May 1892 - Zutphen, Gelderland, Nederland |
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| Generation 3 - Josephus Fredericus Sigismundus Esser: Born - Tuesday 17 March 1818 - Venray, Limburg, Nederland |
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| Generation 3 - Josephus Fredericus Sigismundus Esser: Died - Wednesday 14 April 1875 - Venray, Limburg, Nederland |
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| Generation 3 - Josephus Fredericus Sigismundus Esser & Adelheid Hubertina Janssen: Married - Tuesday 25 September 1849 - Goch, Nordrhein-Westfalen, Deutschland |
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| Generation 3 - Adelheid Hubertina Janssen: Born - About 1819 - Goch, Nordrhein-Westfalen, Deutschland |
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| Generation 3 - Adelheid Hubertina Janssen: Died - Monday 19 September 1887 - Venray, Limburg, Nederland |
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| Generation 4 - Joseph Ludwig Sprenger: Died - Saturday 02 May 1840 - Arnhem, Gelderland, Nederland |
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| Generation 4 - Anna Maria Bermann: Died - Saturday 21 April 1832 - Arnhem, Gelderland, Nederland |
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| Generation 4 - Pierre Conrad Esser: Born - Sunday 22 February 1778 - Erkelenz, Nordrhein-Westfalen, Deutschland |
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| Generation 4 - Pierre Conrad Esser: Died - Saturday 14 March 1846 - Venray, Limburg, Nederland |
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| Generation 4 - Pierre Conrad Esser & Petronelle Marie Minten: Married - Monday 13 January 1812 - Venray, Limburg, Nederland |
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| Generation 4 - Petronelle Marie Minten: Born - Sunday 11 March 1792 - Venray, Limburg, Nederland |
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| Generation 4 - Petronelle Marie Minten: Baptised - Sunday 11 March 1792 - Venray, Limburg, Nederland |
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| Generation 4 - Petronelle Marie Minten: Died - Tuesday 28 March 1837 - Venray, Limburg, Nederland |
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