Jacob de Boer, born circa 1804 (?), died before November 11, 1869, aged at most 65 years.

Jacob was married to
Eeke Jans Postma, born circa 1808 (?), died before November 11, 1869, aged at most 61 years.

• 1 : Douwe de Boer, born in Harlingen circa 1831, beadle poor law administration.
  Douwe was married (1) to Trijntje van der Sluis, born circa 1831 (?), died before November 11, 1869, aged at most 38 years.
  Douwe was married in Harlingen on November 11, 1869, at the age of approximately 38 (2) to Dieuwke Tigchelaar (aged 34 years), born in Almenum on March 12, 1835, daughter of Taeke Jans Tigchelaar (carpenter's man, carpenter and metzelaarsknecht) and Martje Arnoldus Zwart, died in Harlingen on May 22, 1916, aged 81 years.