Geertruid Derks, christened in Warffum before 1705.

Geertruid was married in Warffum on March 5, 1724, at the age of at least 19 to
Berent Hindricks (aged at least 19 years), christened in Warffum before 1705.

• 1 : Grietje Berends, born in Warffum on June 2, 1732, died in Uithuizen on January 4, 1798, aged 65 years.
  Grietje was married in Warffum on December 1, 1754, at the age of 22 to Jannes Tjarks (aged 23 years), born in Warffum on March 3, 1731, died in Uithuizen on July 15, 1799, aged 68 years, son of Tjark Jannes and Anje Klasen.