Tjerk Douwes Douma, born circa 1817, carpenter's man.

Tjerk was married to
Janneke Bokkes Bokman, born circa 1825 (?).

• 1 : Douwe Tjerks Douma, born in Jutrijp on January 4, 1848, carpenter, died in Oosterwierum on June 25, 1900, aged 52 years.
  Douwe was married in Baarderadeel on May 15, 1878, at the age of 30 to Trijntje Ottes Feenstra (aged 23 years), born in Wartena on November 25, 1854, daughter of Otte Wybes Feenstra (bargeman, worker, bargeman and worker) and Johanna Oepkes Bouwma, died in Oosterbierum on October 18, 1937, aged 82 years.