Gialt Doedes Kooistra, born circa 1763, worker, died in Wonseradeel on December 23, 1835, aged approximately 72 years.

Gialt was married to
Maaike Jelles, born circa 1764, died in Wonseradeel on November 10, 1848, aged approximately 84 years.

• 1 : Saackjen Gialts Kooistra, born in Wommels in the year 1797, died in Arum on June 29, 1848, aged 51 years.
  Saackjen was married in Franekeradeel on June 4, 1820, at the age of 23 to Robijn Jans Arbeider (aged 30 years), born in Arum on September 6, 1789, son of Jan Robijns Arbeider (worker) and Jeltje Gerrits de Jong, worker and worker, died in Arum on May 15, 1862, aged 72 years.