Klaas Jans Bouwmans, born in Rasquert (gem Baflo) circa 1794, son of Jan Klaassen Bouwmans and Adriaantje Jacobs Heeres.

He was married in Uithuizen on December 28, 1833 to
Geeske Jacobs Vennema, born in Zandeweer (gem Uithuizen) on January 23, 1791, died after 1867, daughter of Jacob Sierts Vennema and Anje Reinjes.
(She was married before in Uithuizen on September 4, 1813 to Hindrik Kornelis Maring, born in Uithuizermeeden, christened there on May 11, 1777, died in Uithuizen on October 30, 1832, son of Cornelis Harms and Bauke Jans.)

• 1 : Adriaantje, born in Uithuizen between 1833 and 1836.
  She was married in Loppersum on August 9, 1854 (1) to Albert Prins.
  She was married in Loppersum on September 7, 1867 (2) to Hindrik Veld, born in Stedum.