┌── Hermann Franz Kromme(Monday 14 March 1842 Schapen, Niedersachsen, Deutschland - Saturday 09 June 1900 Kloosterburen,
   │   Groningen, Nederland)

   │                 ┌── Jan Herm Heuvers (Date unknown - Date unknown)

   │           ┌── Antonius Franciscus Krumme (Schapen, Niedersachsen, Deutschland;Saturday 02 May 1789 - Sunday 03 January 1869)

   │           │     └── Margaretha Ottenschulte(About 1748 Thuine, Niedersachsen, Deutschland - Monday 09 September 1833 Schapen,
   │           │         Niedersachsen, Deutschland)

   │     └── Margaretha Alida Kromme(Sunday 16 January 1820 Schapen, Niedersachsen, Deutschland - Tuesday 01 July 1902 Kloosterburen,
   │         Groningen, Nederland)

   │           └── Anna Christina Königschulte (Schapen, Niedersachsen, Deutschland;Friday 30 August 1793 - Saturday 16 August 1834)

Johannes Jozephus Kromme (Sunday 22 December 1878 Kloosterburen, Groningen, Nederland - Date unknown)

   │                 ┌── Jan Jozef Savenije(1753 Val-Meer, Limburg, België - Monday 18 November 1839 Coevorden, Drenthe, Nederland) =>

   │           ┌── Eustachius Savenije (1786 Val-Meer, Limburg, België - Friday 16 July 1875 Veendam, Groningen, Nederland)

   │           │     └── Johanna Weermans(1753 Emlichheim, Grafschaft Bentheim, Niedersachsen, Deutschland - Monday 08 July 1833
   │           │         Coevorden, Drenthe, Nederland)

   │     ┌── Joannes Josephus Savenije(Monday 02 October 1809 Veendam, Groningen, Nederland - Friday 26 November 1880 Oude Pekela,
   │     │   Groningen, Nederland)

   │     │     │     ┌── Hendrik Oosterman(Approximately 1754 Heede, Niedersachsen, Deutschland - After 1829 Oude Pekela, Groningen,
   │     │     │     │   Nederland)

   │     │     └── Helena Hindriks Oosterman(Wednesday 12 September 1787 Bourtange, Vlagtwedde, Groningen, Nederland - Friday 21 May
   │     │         1824 Veendam, Groningen, Nederland)

   │     │           └── Margaretha Wegman (1758 Heede, Niedersachsen, Deutschland - After 1829 Oude Pekela, Groningen, Nederland)

   └── Elisabeth Helena Savenije(Saturday 31 August 1839 Oude Pekela, Groningen, Nederland - Friday 20 October 1905 Kloosterburen,
       Groningen, Nederland)

         │           ┌── Hindrik Jans Wortelboer (Oude Pekela, Groningen, Nederland;Approximately 1741 - Saturday 11 July 1812) =>

         │     ┌── Gerardus Hendriks Wortelboer (Oude Pekela, Groningen, Nederland;Friday 23 January 1778 - Friday 15 December 1843)

         │     │     └── Agatha Gerrits(Approximately 1748 Sappemeer, Groningen, Nederland - Sunday 08 November 1812 Oude Pekela,
         │     │         Groningen, Nederland) =>

         └── Agatha Gerrits Wortelboer (Oude Pekela, Groningen, Nederland;Friday 16 July 1813 - Wednesday 30 September 1874)

               │     ┌── Hendrik Berends Drenth (Oude Pekela, Groningen, Nederland;Approximately 1742 - Monday 12 December 1814) =>

               └── Joanna Drenth (Oude Pekela, Groningen, Nederland;Tuesday 02 November 1779 - Tuesday 26 August 1845)

                     └── Tibechien Jans Diersche(1748 Dörpen, Niedersachsen, Deutschland - Tuesday 19 January 1830 Oude Pekela,
                         Groningen, Nederland)