Sijmentje Ruurds de Haan, born circa 1798 (?).

Sijmentje was married to
Gerrit Douwes Tigchelaar, born circa 1794 (?).

• 1 : Douwtje Gerrits Tigchelaar, born in Dronrijp circa 1821, died in Midlum on December 14, 1883, aged approximately 62 years.
  

• 2 : Douwe Gerrits Tigchelaar, born in Dronrijp circa 1826, tilebaker's hand and tilebaker, died in Midlum on May 29, 1864, aged approximately 38 years.
  Douwe was married to Geertje Doedes van der Zee, born circa 1832 (?).