┌── Beerent Harms (Date unknown - Date unknown)

         ┌── Jan Berends (Nieuwe Pekela, Groningen, Nederland;1709 - Before March 1776)

         │     └── Jantien Hindriks (Date unknown - Date unknown)

   ┌── Harm Jans Brouwer (Nieuwe Pekela, Groningen, Nederland;1745 - Friday 12 February 1813)

   │     │           ┌── Hendrik Jans (Date unknown - Date unknown)

   │     │     ┌── Abraham Hendriks (1684 Oude Pekela, Groningen, Nederland - 1744 Nieuwe Pekela, Groningen, Nederland)

   │     │     │     └── Annegijn Peters (Date unknown - Date unknown)

   │     └── Hinderkien Abrahams (Nieuwe Pekela, Groningen, Nederland;1715 - Before February 1755)

   │           │     ┌── Jan Hindriks (About 1664 - Date unknown)

   │           └── Antje Jans (1687 Oude Pekela, Groningen, Nederland - Between 1745 and 1747 Nieuwe Pekela, Groningen, Nederland)

   │                 └── Grietje Hindriks (About 1668 - Date unknown)

Jan Harms Brouwer (Nieuwe Pekela, Groningen, Nederland;Thursday 04 January 1770 - Monday 18 July 1814)

   │     ┌── Bartholt Tonnis (Estimated in 1700 Vellage, Weener, Ostfriesland, Niedersachsen, Deutschland - Date unknown)

   └── Hindrikkijn Bartelts (1745 Nieuwe Pekela, Groningen, Nederland - Date unknown)

         │     ┌── Beerent Harms (Date unknown - Date unknown)

         └── Engeltje Berends (1705 Nieuwe Pekela, Groningen, Nederland - Date unknown)

               └── Jantien Hindriks (Date unknown - Date unknown)