Jacob Rientzes Steensma, born circa 1767, son of Rients Jacobs and Feikje Abrahams Plekker, tasser, died in Midlum on March 5, 1812, aged approximately 45 years.

Jacob was married to
Stijntje Jacobs Hoek, born circa 1765 (?), died in Midlum on December 30, 1825, aged approximately 60 years.

• 1 : Rients Jacobs Steensma, born in Midlum circa 1801, died in Almenum on July 18, 1847, aged approximately 46 years.
  Rients was married (1) to Engeltje Adams Klaver, born circa 1801 (?).
  Rients was married (2) to Hendrika Paulus Faro, born circa 1801 (?).
  

• 2 : Henderina Jacobs Steensma, born in Midlum circa 1805.
  Henderina was married in Harlingen on August 18, 1831, at the age of approximately 26 to Jacob Allerts Wiersma (aged approximately 29 years), born in Almenum circa 1802, son of Allert Paulus Wiersma and Ynskje Jacobs, milk retailer.
  

• 3 : Feikje Jacobs Steensma, born in Midlum circa 1808, died in Almenum on July 13, 1832, aged approximately 24 years.