Hendrik Baukes Zeilstra, born in Westzaandam on March 24, 1799, christened in Eernewoude on May 5, 1799, son of Bauke Pieters Zeilstra and Geertje Johannes, died in Nijehaske on October 17, 1849, aged 50 years.

Hendrik was married to
Pietje Jans van der Els, born circa 1822 (?), died after October 17, 1849, aged at least 27 years.

• 1 : Bauke Zeilstra, born in Leiden circa 1845.
  Bauke was married in Spaarndam on September 25, 1870, at the age of approximately 25 to Maria Hartog (aged approximately 21 years), born in Spaarndam circa 1849, daughter of Pieter Hartog and Catharina Baalberg.