Maria Jentjes Douma, born circa 1843 (?).

Maria was married to
Yke Jarigs de Jong, born circa 1839 (?).

• 1 : Jarig de Jong, born in Warns on February 13, 1866, teacher, died before March 26, 1934, aged at most 68 years.
  Jarig was married in Rauwerderhem on June 6, 1889, at the age of 23 to Marijke Rients Sybrandy (aged 24 years), born in Rauwerd on December 15, 1864, daughter of Rients Durks Sybrandy and Sijttje Ottes Feenstra, died in Akkrum on April 25, 1934, aged 69 years.