Sierdtje Yntema, born in Workum on March 14, 1868, christened there on March 18, 1894, daughter of Klaas Yntema (workman, workman and workman) and Sierddtje Tjeerds Bakker, dressmaker, died in Workum on January 7, 1909, aged 40 years.

Sierdtje was married in Workum on March 29, 1890, at the age of 22 to
Johannes Keimpes Feenstra (aged 24 years), born in Workum on December 29, 1865, son of Keimpe Johannes Feenstra (workman, barge hand, sailor, barge hand, barge hand, sailor, workman, workman and sailor) and Pietertje Redmers Bargsma, journeyman printer, typesetter, boekdrukker, boekdrukker, journeyman printer and journeyman printer, died in Workum on February 11, 1925, aged 59 years.

• 1 : Keimpe Feenstra, born in Workum on December 7, 1890, christened there on June 28, 1891, typesetter and printer, died in Leeuwarden on August 16, 1939, aged 48 years.
  Keimpe was married in Leeuwarden on September 19, 1917, at the age of 26 to Hiltje de Vries (aged 27 years), born in Kollum on July 21, 1890, daughter of Rienk de Vries (carter) and Gerbrigje Zijlstra, died after August 16, 1939, aged at least 49 years.
  Hiltje was married before in Leeuwarden on May 1, 1912, at the age of 21 to Harmen Mijllijma (aged 32 years), born in Dockum on February 8, 1880, son of Stephanus Mijllijma and Lolkje Vrij.
  

• 2 : Klaas Cornelis Feenstra, born in Workum on March 25, 1892, christened there on July 31, 1892.