Sytske Teunis Stellingwerf, born circa 1809 (?), died before May 19, 1859, aged at most 50 years.

Sytske was married to
Anne Tjerks de Vries, born circa 1805 (?), carpenter's man.

• 1 : Tjerk Annes de Vries, born in Harlingen circa 1832, carpenter's man, died before August 12, 1916, aged at most 84 years.
  Tjerk was married in Harlingen on May 19, 1859, at the age of approximately 27 to Eiskje Tigchelaar (aged 29 years), born in Almenum on September 12, 1829, daughter of Taeke Jans Tigchelaar (carpenter's man, carpenter and metzelaarsknecht) and Martje Arnoldus Zwart, maid servant, died in Harlingen on August 12, 1916, aged 86 years.