Jan Sipkes Boersma, born circa 1851, worker.

Jan was married to
Lolkje Klazes van der Zee, born circa 1854 (?).

• 1 : Klaas Jans Boersma, born in Suameer on October 9, 1877, stock farmer, died in Leeuwarden on October 11, 1972, aged 95 years.
  Klaas was married in Idaarderadeel on May 21, 1904, at the age of 26 to Doetje Feenstra (aged 24 years), born in Wartena on November 19, 1879, daughter of Wytze Gerrits Feenstra (barge hand, merchant and shopkeeper) and Grietje Martens Veenema, died in Oudega on October 12, 1952, aged 72 years.