Gettje Tietes, born circa 1744 (?), died before 1812, aged at most 68 years.

Gettje was married to
Willem Sierks Kooistra, born circa 1745, lock-keeper, died in Franekeradeel on May 24, 1817, aged approximately 72 years.

• 1 : Sierk Willems Kooistra, born in the year 1767, cabbage grower and cabbage grower.
  

• 2 : Tiete Willems Kooistra, born in the year 1788, worker and farmer, died in Franeker on April 5, 1837, aged 49 years.
  Tiete was married in Franekeradeel on June 14, 1812, at the age of 24 to Froukje Jans Arbeider (aged 28 years), born in Arum on August 29, 1783, christened there on September 14, 1783, daughter of Jan Robijns Arbeider (worker) and Jeltje Gerrits de Jong, maid servant, died in Franeker on March 31, 1837, aged 53 years.