Jan Heerts Tichelaar, born in Harlingen on June 4, 1794, christened there on June 17, 1794, son of Heert Meintes Tichelaar (workman) and Grietje Jans Born.

Jan was married in Dokkum on April 22, 1821, at the age of 26 to
Anna Hendriks Bontekoe (aged approximately 23 years), born circa 1798 (?).

• 1 : Heert Jans Tichelaar, born in Dantumadeel on August 1, 1821, died in Bolsward on January 24, 1894, aged 72 years.
  Heert was married in Tietjerksteradeel on May 12, 1849, at the age of 27 (1) to Grietje Willems Klaver (aged 28 years), born in Tietjerksteradeel on December 6, 1820, daughter of Willem Hoppes Klaver (waggoner) and Leentje Johannes Feitsma, died in Baarderadeel on January 30, 1852, aged 31 years.
  Heert was married in Tietjerksteradeel on February 19, 1853, at the age of 31 (2) to Sytske Sjoerds van der Veen (aged approximately 27 years), born circa 1826, died in Bolsward on August 28, 1873, aged approximately 47 years.
  

• 2 : Hendrik Jans Tiggelaar, born in Dantumadeel on January 8, 1823, died in Bolsward on August 11, 1832, aged 9 years.
  

• 3 : Grietje Jans Tichelaar, born in Dokkum on October 21, 1824.
  Grietje was married in Leeuwarden on December 19, 1846, at the age of 22 to Marius Reinalda (aged 23 years), born in Leeuwarden on October 6, 1823, died on June 3, 1863, aged 39 years.
  

• 4 : Albert Jans Tichelaar, born in Dokkum on October 13, 1826, died in Bolsward on July 29, 1836, aged 9 years.
  

• 5 : Yttje Jans Tigchelaar, born in Midlum on January 8, 1830, died in Bolsward on April 15, 1832, aged 2 years.
  

• 6 : Ytje Jans Tichelaar, born in Bolsward on January 15, 1833, died unmarried in Leeuwarden on January 7, 1852, aged 18 years.
  

• 7 : Hendrik Jans Tichelaar, born in Bolsward on June 12, 1836, died there on July 24, 1866, aged 30 years.
  Hendrik was married in Bolsward on November 13, 1864, at the age of 28 to Ytje Douwes Buma (aged 31 years), born in Bolsward on December 16, 1832, daughter of Douwe Tjeerds Buma and Neeltje Johannes Lammertsma, died there on September 1, 1874, aged 41 years.
  

• 8 : Trijntje Jans Tichelaar, born in Bolsward on December 23, 1839, died there on May 21, 1840, aged 150 days.
  

• 9 : Albert Jans Tichelaar, born in Bolsward on June 2, 1842.
  Albert was married in Leeuwarden on August 1, 1874, at the age of 32 to Tietje Mazerius (aged approximately 22 years), born circa 1852 (?).