Douwe Ybeles Kroes, born circa 1748, son of Ybele Klases and Antje, died in Workum on September 2, 1818, aged approximately 70 years.

Douwe entered a notice of marriage in Workum on November 16, 1794. He was married there on November 16, 1794 in church, at the age of approximately 46 to
Swaantje Jans (aged approximately 20 years), born in Zurich circa 1774, died in Workum on February 18, 1827, aged approximately 53 years.

• 1 : Klaas Douwes Kroes, born in Workum on September 14, 1795, christened there on September 23, 1795.
  

• 2 : Klaas Douwes Kroes, born in Workum on December 16, 1796, christened there on January 6, 1797.
  

• 3 : Antje Douwes Kroes, born in Workum on June 2, 1798, christened there on June 15, 1798, died there on May 20, 1876, aged 77 years.
  Antje was married in Workum on July 19, 1837, at the age of 39 to Hendrik Jans de Harder (aged 54 years), born in Workum on November 26, 1782, christened there on December 18, 1782, son of Jan Hendriks de Harder and Janke Nannes Visser, touwpluizer, touwpluizer, touwpluizer, jobless, workman, jobless and workman, died in Workum on December 16, 1847, aged 65 years.
  Hendrik was married before in Workum on January 12, 1806 in church, at the age of 23 to Trijntje Martens Osinga (aged approximately 22 years), born circa 1784 (?). Hendrik was married before in Workum on June 28, 1818, at the age of 35 to Wapke Symons Kalksma (aged 20 years), born in Makkum on May 16, 1798, daughter of Symon Herkes Kalksma and Trijntje Pieters, died in Workum on May 4, 1836, aged 37 years.
  

• 4 : Jantje Douwes Kroes, born in Workum on September 4, 1801, christened there on September 16, 1801.
  

• 5 : Jan Douwes Kroes, born in Workum on February 10, 1803, christened there on February 25, 1803.