Tjitske Sippes van der Zee, born circa 1815 (?).

Tjitske was married to
Abraham Jacobs de Vries, born circa 1811 (?).

• 1 : Jacob Abrahams de Vries, born in Pietersbierum on November 8, 1838, farmer's hand, worker and milk retailer, died in Harlingen on November 28, 1900, aged 62 years.
  Jacob was married in Wonseradeel on May 10, 1862, at the age of 23 to Trijntje Herkes Bijlsma (aged 23 years), born in Wijnaldum on February 24, 1839, daughter of Herke Bouwes Bijlsma and Taetske Ruurds Baanstra, maid servant, died in Harlingen on April 10, 1921, aged 82 years.