Wrister van Kalker.

He was married to
Elizabeth Bakker.

• 1 : Aaltje, born in Uithuizermeeden on May 4, 1841, died on May 6, 1881, buried in Oosteinde.
  She was married in Uithuizermeeden on May 4, 1866 to Albert Bennes Hartman, born in Uithuizermeeden on March 1, 1824, died on December 14, 1890, buried in Oosteinde, son of Benne Reintjes Hartman and Martje Alberts Brander.
  (He was married afterwards in Uithuizermeeden on July 2, 1886 to his daughter in law Elizabeth Cornelis Smit, born in Loppersum circa 1861, died in the year 1941, daughter of Kornelis Smit and Martje Jans Koning. (She was married afterwards to her step-son Wrister Hartman, died in the year 1938, son of Albert Bennes Hartman and Aaltje van Kalker.))