Tjitske Minkes van der Schaaf, born circa 1793, died in Wonseradeel on August 13, 1847, aged approximately 54 years.

Tjitske was married in Wonseradeel on May 23, 1818, at the age of approximately 25 to
Sjoerd Jans Bijlsma (aged approximately 22 years), born circa 1796, worker, died in Wonseradeel on October 3, 1855, aged approximately 59 years.

• 1 : Riemkje Sjoerds Bijlsma, born in Lollum on March 12, 1819, died in Arum on August 18, 1856, aged 37 years.
  Riemkje was married in Wonseradeel on January 18, 1840, at the age of 20 to Feike Franses Bergsma (aged 25 years), born in Arum on January 11, 1815, son of Frans Feikes Bergsma (jobless, peat barge proprietor, schuiteboer, worker and worker) and Trientje Sjoerds Bastien (daily help), shoemaker, worker and shoemaker's hand, died in Arum on February 1, 1906, aged 91 years.
  Feike was married afterwards in Wonseradeel on April 7, 1864, at the age of 49 to Antje Annes Fortuin (aged 34 years), born in Akkrum on March 19, 1830, daughter of Anne Alles Fortuin (bargeman) and Geertje Durks Visser, maid servant, died in Arum on October 4, 1919, aged 89 years.
  

• 2 : Sytske Sjoerds Bijlsma, born in Wonseradeel on October 3, 1820.
  

• 3 : Jantje Sjoerds Bijlsma, born in Wonseradeel on February 6, 1823.
  

• 4 : Johannes Sjoerds Bijlsma, born in Wonseradeel on March 21, 1825.
  

• 5 : Mink Sjoerds Bijlsma, born in Wonseradeel on March 15, 1828.
  

• 6 : Jan Sjoerds Bijlsma, born in Wonseradeel on October 5, 1830.
  

• 7 : Gerrit Sjoerds Bijlsma, born in Wonseradeel on November 26, 1833.