Jacoba Johannes de Vries, born in Dockum on December 18, 1841, daughter of Johannes Gerrits de Vries (fisherman) and Aaltje Lunsing, died in Workum on March 14, 1907, buried there, aged 65 years.

Jacoba was married in Dokkum on November 27, 1864, at the age of 22 to
Age Ottes Feenstra (aged 26 years), born in Eernewoude on January 25, 1838, son of Otte Baukes Feenstra (peat cutting supervisor, barge hand and worker) and Hinke Lykeles Haarsma, bargeman, shopkeeper and merchant, died in Workum on February 10, 1919, buried there, aged 81 years.

• 1 : Aaltje Feenstra, born in Workum on August 30, 1865, died on March 20, 1945, buried in Workum, aged 79 years.
  Aaltje was married in Hemelumer Oldeferd on June 6, 1889, at the age of 23 to Durk Groenhof (aged 29 years), born in Koudum on November 20, 1859, son of Brugt Jacobs Groenhof and Maartje Durks Vermeulen, bargeman, died in Workum on March 13, 1944, buried there, aged 84 years.
  

• 2 : Otte Feenstra, born in Nijega on February 11, 1869, bargeman, steamship captain and stock farmer, died in Koudum on February 26, 1936, aged 67 years.
  Otte was married in Hemelumer Oldeferd on May 10, 1894, at the age of 25 to Hitje Kuipers (aged 25 years), born in Wolsum on June 1, 1868, daughter of Catharinus Kuipers (jobless and carpenter) and Jeltje Stienstra, died in Workum on December 23, 1938, aged 70 years.
  

• 3 : Hinke Feenstra, born in Workum on May 4, 1872, died in Heidenschap on August 1, 1911, buried in Workum, aged 39 years.
  Hinke was married in Hemelumer Oldeferd on September 6, 1895, at the age of 23 to Brugt Groenhof (aged 31 years), born in Gaastmeer on November 3, 1863, son of Christiaan Brugts Groenhof and Tjitsje Douwes Reitsma, bargeman, died in Koudum on April 30, 1939, aged 75 years.
  Brugt was married afterwards in Hemelumer Oldeferd on November 2, 1916, at the age of 52 to Trijntje de Vries (aged approximately 22 years), born circa 1894 (?).
  

• 4 : Johannes Feenstra, born in Workum on November 4, 1874, shopkeeper, bargeman, grocer, grocer and grocer, died in Koudum on July 24, 1953, aged 78 years.
  Johannes was married in Workum on May 13, 1899, at the age of 24 to Trijntje Deinum (aged 23 years), born in Workum on April 13, 1876, daughter of Tjibbe Deinum (carpenter's man) and Hotske Hofstra, died in Koudum on July 3, 1969, aged 93 years.
  

• 5 : Sijtje Feenstra, born in Nijega on May 12, 1877, died in Workum on October 8, 1915, aged 38 years.
  Sijtje was married in Workum on May 17, 1902, at the age of 25 to Hendrik de Vries (aged 25 years), born in Workum on February 20, 1877, son of Willem de Vries (house painter) and Trijntje de Jong.
  

• 6 : Sophia Feenstra, born in Hemelumer Oldeferd on February 25, 1882.
  Sophia was married in Workum on June 24, 1905, at the age of 23 to Pier Veenstra (aged approximately 27 years), born circa 1878, sigarenfabrikant.