Jacob Gjalts, born circa 1717 (?), died in Wartena in the year 1782, aged approximately 65 years.

Jacob was married to
Taetske Douwes, born circa 1727 (?), died in Wartena in the year 1800, aged approximately 73 years.

• 1 : Doetje Jacobs, born circa 1749 (?), died on October 5, 1814, aged approximately 65 years.
  Doetje was married in Eernewoude on July 5, 1772 in church, at the age of approximately 23 to Halbe Baukes Feenstra (aged 26 years), christened in Eernewoude on November 25, 1745, son of Bauke Halbes and Sytske Baukes, peat barge proprietor and bargeman, died in Idaarderadeel on September 9, 1817, aged 71 years.