Hielkje Joustra, born circa 1820 (?).

Hielkje was married to
Cornelis Gonggrijp, born circa 1816 (?), died before June 26, 1884, aged at most 68 years.

• 1 : Geertje Gonggrijp, born in Harlingen on July 11, 1843, seamstress.
  Geertje was married in Harlingen on June 26, 1884, at the age of 40 to Jan Tigchelaar (aged 51 years), born in Almenum on October 17, 1832, son of Taeke Jans Tigchelaar (carpenter's man, carpenter and metzelaarsknecht) and Martje Arnoldus Zwart, workman and fisher, died in Harlingen on February 11, 1899, aged 66 years.
  Jan was married before in Harlingen on May 19, 1859, at the age of 26 to Trijntje Rynkema (aged 27 years), born in Almenum on August 4, 1831, daughter of Douwe Feddes Rynkema and Geertje Jobs Plekker, died in Harlingen on February 20, 1884, aged 52 years.