Jan Cornellis, born in Warffum on March 14, 1709, died there on May 17, 1771.

He was married in Warffum on March 25, 1736 to
Anje Jans, born in Warffum, christened there on April 21, 1715, died there on May 18, 1792.

• 1 : Bauke, born in Warffum, christened there on December 2, 1742, died De Horne (gem Uithuizermeeden) on November 30, 1807.
  She was married in Warffum on April 9, 1765. She was married in Uithuizermeeden on April 21, 1765 in church to Cornelis Harms, born in Uithuizermeeden in September 1737, christened there on October 6, 1737, died there on September 30, 1806, son of Harm Cornelis and Jantjen Jans.