Sybren Jacobs van der Zee, born circa 1815, worker, died in Franekeradeel on August 25, 1863, aged approximately 48 years.

Sybren was married to
Geertje Abrahams Boonstra, born in Sexbierum on June 5, 1813, daughter of Abraham Gerrijts Boonstra and Trijntje Gerrijts Boonstra, woman worker, died in Franekeradeel on January 21, 1890, aged 76 years.

• 1 : Gerrit van der Zee, born in Franekeradeel on December 5, 1844, died there on October 15, 1845, aged 314 days.
  

• 2 : Gerritje van der Zee, born in Franekeradeel on February 16, 1846.
  

• 3 : Gerrit van der Zee, born in Franekeradeel on April 1, 1847.
  

• 4 : Trijntje van der Zee, born in Franekeradeel on August 8, 1851.
  

• 5 : Age van der Zee, born in Franekeradeel on February 5, 1855.
  

• 6 : Jantje van der Zee, born in Midlum on March 31, 1859, died there on March 26, 1918, aged 58 years.
  Jantje was married in Barradeel on May 20, 1882, at the age of 23 to Klaas Rommerts Tigchelaar (aged 25 years), born in Wijnaldum on August 24, 1856, son of Rommert Klases Tigchelaar (farmhand and worker) and Baukje Jans Dijkstra (woman worker), worker, died in Wijnaldum on March 22, 1942, aged 85 years.
  Klaas was married afterwards in Barradeel on September 20, 1919, at the age of 63 to Klaaske Klazes Helfrich (aged 55 years), born in Kimswerd on October 22, 1863, daughter of Klaas Jans Helfrich (worker and worker) and Japke Dirks Ruim, died in Tzummarum on December 1, 1947, aged 84 years. Klaaske was married before in Wonseradeel on July 9, 1887, at the age of 23 to Auke Deinum (aged approximately 26 years), born circa 1861 (?).