Klaaske Willems, born in the year 1717, died in Sexbierum.

Klaaske was married to
Sippe Pieters, born in the year 1715, died in Pietersbierum.

• 1 : Willem Sippes, born in the year 1743, died in Pietersbierum in the year 1800, aged 57 years.
  Willem was married to Sytske Lieuwes, born circa 1738, daughter of Lieuwe Brands and Hykje Tjepkes, died in Wijnaldum on December 18, 1819, aged approximately 81 years.