Klaaske Kamminga, born circa 1874 (?).

Klaaske was married to
Johannes Bergsma, born circa 1867, carpenter's man and worker.

• 1 : Jieble Bergsma, born in Pingjum on March 21, 1897, died in Leeuwarden on October 28, 1974, aged 77 years.
  Jieble was married in Wonseradeel on May 19, 1923, at the age of 26 to Freerkjen de Jong (aged 24 years), born in Pingjum on November 11, 1898, daughter of Douwe Jans de Jong (worker) and Trijntje Jorritsma, died in Harlingen on September 22, 1988, aged 89 years.
  

• 2 : Cornelis Bergsma, born in Pingjum on September 27, 1900, died there on January 2, 1901, aged 97 days.
  

• 3 : Cornelis Bergsma, born in Pingjum on May 8, 1902.