Thomas Jacobs Sippens, born circa 1848 (?), merchant.

Thomas was married to
Akke Sieks Plantinga, born circa 1852 (?).

• 1 : Jantje Sippens, born in Tzum on July 17, 1875.
  Jantje was married in Franeker on December 19, 1897, at the age of 22 to Herman Feenstra (aged 23 years), born in Harlingen on October 27, 1874, son of Cornelis Feenstra (blacksmith' hand and blacksmith' hand) and Hielkje Heeres (maid servant), serviceman and workman.