Hendrik Johannes Nielsen, born in Harlingen circa 1798, son of Johannes Hendriks Nielsen (weaver) and Johanna Rintjes Wagenaar (peat tallier), died in Harlingen on June 13, 1858, aged approximately 60 years.

Hendrik was married in Harlingen on September 29, 1822, at the age of approximately 24 (1) to
Sibilla Klein (aged approximately 20 years), born in Harlingen circa 1802, died there on April 18, 1845, aged approximately 43 years.

• 1 : Johanna Hendriks Nielsen, born in Harlingen on March 21, 1823.
  

• 2 : Christoffel Hendriks Nielsen, born in Harlingen on August 17, 1825, died there on January 26, 1840, aged 14 years.
  

• 3 : Saakje Hendriks Nielsen, born in Harlingen on May 22, 1828, died there on July 31, 1828, aged 70 days.
  

• 4 : Johannes Hendriks Nielsen, born in Harlingen on November 16, 1829.
  

• 5 : Saakje Hendriks Nielsen, born in Harlingen on March 19, 1834, died there on April 29, 1853, aged 19 years.
  

• 6 : Fokke Hendriks Nielsen, born in Harlingen on May 25, 1837, died in Franeker on May 25, 1863, aged 26 years.
  Fokke was married in Franeker on February 22, 1863, at the age of 25 to Syke Schuitemaker (aged approximately 22 years), born circa 1841 (?).
  

• 7 : Tietje Hendriks Nielsen, born in Harlingen on February 17, 1841, died there on October 28, 1842, aged 1 year.
  

Hendrik was married in Harlingen on September 28, 1848, at the age of approximately 50 (2) to
Syke de Groot (aged approximately 50 years), born in Harlingen circa 1798, died there on November 14, 1857, aged approximately 59 years.