Geert Nielsen, born in Harlingen on November 6, 1868, son of Willem Nielsen (dock hand) and Doutje Kwast, workman, died in Franeker on November 30, 1913, aged 45 years.

Geert was married in Harlingen on December 17, 1891, at the age of 23 to
Catharina Mulder (aged 20 years), born in Harlingen on September 30, 1871, died there on February 5, 1932, aged 60 years.

• 1 : Doutje Nielsen, born in Harlingen on January 2, 1892, died in Noord Bergum on March 3, 1973, aged 81 years.
  Doutje was married in Harlingen on May 8, 1913, at the age of 21 to Pier Attema (aged 23 years), born in Harlingen on July 9, 1889, son of Hendricus Attema (workman, worker, merchant and fishmonger) and Johanna Tigchelaar, fisherman, sailor, transport worker, longshoreman and worker, died in Groningen on February 5, 1951, aged 61 years.
  

• 2 : Engelina Nielsen, born in Harlingen on April 28, 1893.
  

• 3 : Willem Nielsen, born in Harlingen on September 23, 1894.
  

• 4 : Gerrit Nielsen, born in Harlingen on December 23, 1895, died unmarried there on June 11, 1968, aged 72 years.
  

• 5 : Anna Nielsen, born in Harlingen on February 20, 1898.
  

• 6 : Bouke Nielsen, born in Rotterdam in January 1900, died in Harlingen on November 26, 1900, aged 10 months.
  

• 7 : Bouke Nielsen, born in Harlingen on September 19, 1902.
  

• 8 : Catharina Louise Nielsen, born in Harlingen on June 22, 1905, died there on January 19, 1920, aged 14 years.