Douwe Jans de Jong, born in Pingjum on September 29, 1859, son of Jan Robijns de Jong (farmer's hand and worker) and Freerkjen Douwes Faber (maid servant), worker, died in Makkum on April 21, 1944, aged 84 years.

Douwe was married in Wonseradeel on May 22, 1886, at the age of 26 to
Trijntje Jorritsma (aged 26 years), born in Pingjum on July 24, 1859, daughter of Eitte Steffens Jorritsma and Klaaske Klazes Wallinga, died there on January 2, 1934, aged 74 years.

• 1 : Jan de Jong, born in Pingjum on March 8, 1887, worker Netherlands Railroads, died in Deinum on July 10, 1939, aged 52 years.
  Jan was married in Franekeradeel on November 9, 1912, at the age of 25 to Klaaske Belksma (aged 24 years), born in Tzum on August 2, 1888, daughter of Meindert Belksma and Maartje Vermeer, died in Leeuwarden on January 16, 1989, aged 100 years.
  

• 2 : Jitte de Jong, born in Pingjum on April 25, 1889, workman, died in Wommels on October 13, 1942, aged 53 years.
  Jitte was married in Hennaarderadeel on May 27, 1911, at the age of 22 to Baukjen Jouwsma (aged 21 years), born in Wommels on October 16, 1889, daughter of Pieter Wybrens Jouwsma (worker and workman) and Dirkjen Jouwsma, daily help, died in Wommels on November 9, 1956, aged 67 years.
  

• 3 : Freerk de Jong, born in Pingjum on April 25, 1889, worker.
  Freerk was married in Wonseradeel on May 17, 1913, at the age of 24 to Trijntje Anema (aged 22 years), born in Kimswerd on September 12, 1890, daughter of Jan Anema (worker) and Minke Hanzes de Boer (maid servant), maid servant, died in Kimswerd on February 19, 1925, aged 34 years.
  

• 4 : Klaas de Jong, born in Pingjum on December 30, 1890, gardener, died in Sneek on November 23, 1975, aged 84 years.
  Klaas was married in Wonseradeel on November 17, 1917, at the age of 26 to Fetje Strikwerda (aged 23 years), born in Witmarsum on June 19, 1894, daughter of Anne Strikwerda (worker and miller) and Elisabeth Grondsma, died in Harlingen on November 24, 1968, aged 74 years.
  

• 5 : Freerkjen de Jong, born in Pingjum on November 11, 1898, died in Harlingen on September 22, 1988, aged 89 years.
  Freerkjen was married in Wonseradeel on May 19, 1923, at the age of 24 to Jieble Bergsma (aged 26 years), born in Pingjum on March 21, 1897, son of Johannes Bergsma (carpenter's man and worker) and Klaaske Kamminga, died in Leeuwarden on October 28, 1974, aged 77 years.