Sytske Halbes Feenstra, born in Eernewoude on September 7, 1773, christened there on December 26, 1773, daughter of Halbe Baukes Feenstra (peat barge proprietor and bargeman) and Doetje Jacobs, died in Augustinusga on September 11, 1827, aged 54 years.

Sytske was married in Wartena on December 31, 1804 in church, at the age of 31 (1) to
Ruurd Jans (aged approximately 29 years), born circa 1775, died in Achtkarspelen on September 4, 1811, aged approximately 36 years.

• 1 : Doetje Ruurds de Zwart, born circa 1809.
  

• 2 : Jan Ruurds de Zwart, born in Kootstertille circa 1810.
  

Sytske was married in Achtkarspelen [Augustinusga] on May 13, 1813, at the age of 39 (2) to
Brugt Minderts Spoelstra (aged 22 years), born in Augustinusga on September 12, 1790, son of Mindert Brugts Spoelstra and Grietje Jans.
Brugt was married afterwards on October 18, 1828, at the age of 38 to Albertje Eits Jongsma (aged approximately 29 years), born in Augustinusga circa 1799.

• 3 : Mindert Brugts Spoelstra, born in Achtkarspelen [Augustinusga] on February 18, 1814, died there on November 24, 1814, aged 279 days.
  

• 4 : Mindert Brugts Spoelstra, born in Augustinusga circa 1818.