Harmen Martens de Vries, born circa 1855 (?), died before April 19, 1902, aged at most 47 years.

Harmen was married to
Dieke Hoekstra, born circa 1859 (?).

• 1 : Janke de Vries, born in Dragten circa 1882, died in Nijega on May 31, 1920, aged approximately 38 years.
  Janke was married in Smallingerland on April 19, 1902, at the age of approximately 20 to Klaas Mulder (aged 24 years), born in Surhuisterveen on February 20, 1878, son of Jan Annes Mulder (journeyman baker) and Wipke Klazes Veenstra, baker, died in Nijega on January 26, 1935, aged 56 years.
  Klaas was married afterwards after February 19, 1921, at the age of at least 42 to Rinske Feenstra (aged at least 44 years), born in Wartena on December 21, 1876, daughter of Wytze Gerrits Feenstra (barge hand, merchant and shopkeeper) and Grietje Martens Veenema, housekeeper, died in Veenwouden on October 18, 1955, aged 78 years. Rinske was married before in Idaarderadeel on May 21, 1904, at the age of 27 to Age Hempenius (aged 27 years), born in Wartena on February 17, 1877, son of Tjerk Rienks Hempenius (bargeman) and Boukje Harmens de Haan, merchant and shopkeeper, died in Wartena on February 19, 1921, aged 44 years.