Jan Sytzes Rienstra, born circa 1810 (?).

Jan was married to
Aaltje Sjoerds Okkes, born circa 1814 (?).

• 1 : Willem Jans Rienstra, born in Franekeradeel on November 1, 1837, worker, died in Barradeel on July 3, 1882, aged 44 years.
  Willem was married in Barradeel on October 14, 1865, at the age of 27 to Marijke Willems Alberda (aged 26 years), born in Franekeradeel on March 28, 1839, daughter of Willem Alberts Alberda and Trijntje Ages de Jong, died in Harlingen on June 8, 1896, aged 57 years.