Claas Durc, born in the year 1717.

Claas was married to
N.N., born circa 1726 (?).

• 1 : Wypkjen Klazes, born circa 1749, died before May 19, 1777, aged at most 28 years.
  Wypkjen was married in Arum on May 14, 1775 in church, at the age of approximately 26 to Jan Robijns Arbeider (aged 27 years), born in Arum in the year 1748, son of Robijn Jetses and Froukje Jans, worker, died in Tzum on January 29, 1814, aged 66 years.
  Jan was married afterwards in Arum on May 19, 1777 in church, at the age of 29 to Jeltje Gerrits de Jong (aged approximately 25 years), born in Arum circa 1752, daughter of Gerrit Douwes and N.N., died in Tzum on March 10, 1827, aged approximately 75 years.
  

• 2 : Durc Klases.