┌── Johann Herm Ahlers(Wesuwe, Niedersachsen, Deutschland;Wednesday 18 March 1772 - Wednesday 26 November 1834) =>

               ┌── Hermann Josef Ahlers(1800 Wesuwe, Niedersachsen, Deutschland - Sunday 19 February 1871 Barger-Compascuum, Emmen,
               │   Drenthe, Nederland)

               │     └── Anna Helena Ricken (Wesuwe, Niedersachsen, Deutschland;Tuesday 09 November 1773 - Thursday 31 January 1839) =>

         ┌── Bernard Hinrich Ahlers(Sunday 05 January 1834 Altharen, Niedersachsen, Deutschland - Tuesday 07 August 1917 Nieuwe
         │   Pekela, Groningen, Nederland)

         │     │     ┌── Gerardus Hermannus Müller (Altharen, Niedersachsen, Deutschland;1770 - Friday 29 October 1802)

         │     └── Anna Angela Müller (1800 Altharen, Niedersachsen, Deutschland - Date unknown)

         │           └── Anna Margaretha Felix(1771 Hebelermeer, Niedersachsen, Deutschland - Date unknown Wesuwe, Niedersachsen,
         │               Deutschland) =>

   ┌── Johannes Hinricus Ahlers (Nieuwe Pekela, Groningen, Nederland;Thursday 16 April 1868 - Monday 28 May 1956)

   │     │     ┌── Jan Hindriks Tebben (Nieuwe Pekela, Groningen, Nederland;1802 - Sunday 29 June 1879)

   │     └── Anna Geertruida Tebben (Nieuwe Pekela, Groningen, Nederland;Friday 02 December 1842 - Saturday 17 August 1912)

   │           └── Aaltje Lambertus Kramer(About 1804 Oude Pekela, Groningen, Nederland - Thursday 06 July 1865 Nieuwe Pekela,
   │               Groningen, Nederland)

Harmanna Elizabeth Johanna Ahlers (Tuesday 25 June 1901 Nieuwe Pekela, Groningen, Nederland - Date unknown)

   │                 ┌── Harm Berends Vroom (1756 Borgercompagnie, Sappemeer, Groningen, Nederland - Date unknown) =>

   │           ┌── Harmannes Harms Vroom(1800 Borgercompagnie, Veendam, Groningen, Nederland - Tuesday 15 July 1851 Veendam,
   │           │   Groningen, Nederland)

   │           │     └── Catharina Harms Smit(Thursday 13 June 1771 Borgercompagnie, Sappemeer, Groningen, Nederland - Tuesday 27
   │           │         October 1846 Veendam, Groningen, Nederland) =>

   │     ┌── Hermannus Vroom (Veendam, Groningen, Nederland;Friday 16 August 1844 - Thursday 23 February 1922)

   │     │     │     ┌── Cornelius Wijnkes Bijlholt(1799 Martenshoek, Hoogezand, Groningen, Nederland - Tuesday 13 February 1877
   │     │     │     │   Veendam, Groningen, Nederland) =>

   │     │     └── Elisabeth Cornelius Bijlholt(Monday 04 October 1819 Hoogezand, Groningen, Nederland - Tuesday 14 November 1905
   │     │         Veendam, Groningen, Nederland)

   │     │           └── Brigitta Geerdes (Tuesday 01 February 1785 Wieringen, Noord-Holland, Nederland - Date unknown) =>

   └── Helena Elizabeth Vroom(Sunday 18 November 1866 Veendam, Groningen, Nederland - Friday 01 April 1949 Nieuwe Pekela, Groningen,
       Nederland)

         │           ┌── Jurrien Jans Mulder (Date unknown - Tuesday 29 December 1818 Windeweer, Hoogezand, Groningen, Nederland)

         │     ┌── Jan Jurriens Mulder(1811 Windeweer, Hoogezand, Groningen, Nederland - Thursday 12 May 1859 Veendam, Groningen,
         │     │   Nederland)

         │     │     └── Elsien Jans (Date unknown - Saturday 11 October 1823 Windeweer, Hoogezand, Groningen, Nederland)

         └── Elisabeth Mulder (Veendam, Groningen, Nederland;Saturday 26 April 1845 - Friday 08 November 1918)

               │     ┌── Joannis Oosterop (Date unknown - Date unknown)

               └── Helena Jans Oosterop (Veendam, Groningen, Nederland;1810 - Monday 14 November 1853)

                     └── Aleijdis Harms Bakker (Date unknown - Date unknown)