Tijmen Kornelis de Boer, boer and boerenwerkdoende, born in Langelille on September 9, 1810, christened in Scherpenzeel on September 16, 1810, died in Weststellingwerf on February 3, 1900, aged 89 years, son of Kornelis Pieters de Boer (boer) and Klaasjen Jacobs Landman.

Tijmen was married in Weststellingwerf on May 23, 1833, at the age of 22 to
Jannigje IJsebrands Oosten (aged 19 years), born in Spanga (gem Weststellingwerf) on December 11, 1813, died in Weststellingwerf on July 6, 1864, aged 50 years, daughter of Ysebrand Dirks Oosten (huisman) and Aaltje Jacobs Bosman.

• 1 : Trijntje de Boer, born in Oldelamer on January 4, 1852, died in Noordwolde on December 13, 1927, aged 75 years.
  Trijntje was married in Weststellingwerf on May 8, 1874, at the age of 22 to Gerrit Terpstra (aged 31 years), boerenknecht and winkelier, born in Noordwolde on December 23, 1842, died there on February 3, 1922, aged 79 years, son of Evert Tjalling Terpstra (boer and grofsmidsknecht) and Kaatje Jans Uidinga (winkelierster).