Jakob Derk Aikema, born on July 3, 1909.

He was married to
Marijke Sijbrigje Wielsma, born on January 10, 1913.

• 1 : Jan Pieter, born in Pieterburen on April 19, 1942.
  He was married in Eenrum on December 19, 1967 to Annetta Maring, born in Eenrum on February 26, 1948, daughter of Hendrik Maring and Hendrikje Reineking.