Cornelis Feenstra, born in Harlingen on March 15, 1844, son of Hendrik Jan Feenstra (teacher and teacher) and Aukje Douwes Faber, blacksmith' hand and blacksmith' hand, died on January 27, 1927, buried in Harlingen, aged 82 years.

Cornelis was married in Harlingen on November 19, 1868, at the age of 24 to
Hielkje Heeres (aged 23 years), born in Harlingen on November 22, 1844, daughter of Heere Sjoerd Heeres (sailor and bargeman) and Jeltje Johannes Reuchmans, maid servant, died in Harlingen on April 23, 1932, aged 87 years.

• 1 : Jeltje Feenstra, born in Harlingen on September 29, 1869, maid servant, died in Harlingen on April 14, 1955, buried there, aged 85 years.
  Jeltje was married in Harlingen on May 12, 1892, at the age of 22 to Gerrit Tigchelaar (aged 25 years), born in Harlingen on March 7, 1867, son of Lodewijk Gerrits Tigchelaar (workman and worker) and Saskje Harmens Dijkstra (seamstress), workman and butcher's man, died in Harlingen on June 5, 1955, buried there on June 8, 1955, aged 88 years.
  

• 2 : Hendrik Feenstra, born in Harlingen on March 18, 1871, workman.
  Hendrik was married in Harlingen on July 27, 1893, at the age of 22 to Johanna Appeldoorn (aged 18 years), born in Harlingen on December 15, 1874, daughter of N.N. and Klaasje Appeldoorn.
  

• 3 : Herman Feenstra, born in Harlingen on October 27, 1874, serviceman and workman.
  Herman was married in Franeker on December 19, 1897, at the age of 23 to Jantje Sippens (aged 22 years), born in Tzum on July 17, 1875, daughter of Thomas Jacobs Sippens (merchant) and Akke Sieks Plantinga.