Kornelis Pieters de Boer, boer, born circa 1776, died in Weststellingwerf on February 1, 1843, aged approximately 67 years.

Kornelis was married to
Klaasjen Jacobs Landman, born circa 1779, died in Weststellingwerf on November 14, 1851, aged approximately 72 years.

• 1 : 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.
  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.