Martje Derks Huizinga, born in Uithuizermeeden on December 2, 1784, died in Uithuizen on April 30, 1825, daughter of Derk Luijes Huizinga and Eltje Melles Doornbos.

She was married in Uithuizermeeden on December 2, 1810 to
Harke Cornelis Maring, born in Uithuizermeeden, christened there on January 26, 1783, died in Uithuizen circa January 18, 1854, son of Cornelis Harms and Bauke Jans.

• 1 : Derk Harkes, born in Uithuizen in the year 1813, died there on May 14, 1848.
  

• 2 : Bouke Harkes, born in Uithuizen on March 11, 1815, died in Usquert on November 30, 1885.
  She was married in Uithuizen on January 30, 1836 to Hiepke Jans Boerma, born in Stitswerd (gem Kantens) on September 12, 1808, died in Usquert on June 6, 1886, buried in Usquert (Uithuizen), son of Jan Hiepkes Boerema and Aafke Thies Oosting.
  

• 3 : Cornelis Harkes, born in Uithuizen on February 25, 1817, died there on August 4, 1856.
  He was married in Bedum on November 9, 1850 to Anje Geerts Woest, born in Bedum on November 13, 1826, died in Uithuizen on November 13, 1865, daughter of Geert Pieters Woest and Trijntje Jans Doornbos.
  (She was married afterwards in Uithuizen on February 25, 1858 to Meerten Vos, born in Warffum on January 7, 1821, died in Uithuizen on February 10, 1900, son of Kornelis Jans Vos and Aafke Alberts Klaverdijk.)
  

• 4 : Luye Harkes, born in Uithuizen on October 3, 1819, died there on June 28, 1826.
  

• 5 : Eltje Harkes, born in Uithuizen on March 17, 1822, died there on October 14, 1846.