Martje Jans Koning.

She was married to
Kornelis Smit, died in Loppersum before 1886.

• 1 : Elizabeth Cornelis, born in Loppersum circa 1861, died in the year 1941.
  She was married in Uithuizermeeden on July 2, 1886 (1) 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 before in Uithuizermeeden on May 4, 1866 to Aaltje van Kalker, born in Uithuizermeeden on May 4, 1841, died on May 6, 1881, buried in Oosteinde, daughter of Wrister van Kalker and Elizabeth Bakker.)
  She was married (2) to her step-son Wrister Hartman, died in the year 1938, son of Albert Bennes Hartman and Aaltje van Kalker.
  

• 2 : Jantje, born in Loppersum on May 18, 1864, died in Roodeschool (gem Uithuizermeeden) on May 2, 1893, buried in Oosteinde.
  She was married in Uithuizermeeden on June 18, 1886 to Harm Hindriks Maring, born in Uithuizermeeden on February 11, 1837, died there on October 22, 1914, son of Hindrik Harms Maring and Tietje Klasen van Kalker.