Trijntje Lieuwes Bangma, born in Pingjum on January 21, 1790, daughter of Lieuwe Rintjes Bangma and Wypkjen Wybes Tilstra, died in Zurich on May 3, 1831, aged 41 years.

Trijntje was married in Arum on March 26, 1813, at the age of 23 (1) to
Klaas Piers Wallinga (aged 26 years), born in Arum on November 3, 1786, died there in the year 1821, aged 35 years.

• 1 : Klaaske Klazes Wallinga, born in Wonseradeel on January 26, 1822, died there on February 29, 1896, aged 74 years.
  Klaaske was married in Wonseradeel on May 4, 1844, at the age of 22 to Eitte Steffens Jorritsma (aged 25 years), born in Wonseradeel on August 29, 1818, died there on March 1, 1878, aged 59 years.
  

Trijntje was married in Witmarsum on January 20, 1827, at the age of 36 (2) to
Ruurd Hobbes Ploegstra (aged 26 years), born in Pingjum on January 31, 1800, son of Hobbe Reinders Ploegstra and Anna Johans Heerpels, died in Almenum on March 26, 1846, aged 46 years.

• 2 : Hobbe Ruurds Ploegstra, born on October 3, 1827, died on April 24, 1892, aged 64 years.
  Hobbe was married on January 10, 1850, at the age of 22 to Trijntje Ages Radema (aged 20 years), born in Barradeel on February 4, 1829, daughter of Age Rommerts Radema (worker and worker) and Sjerpje Sjerps Post, died on May 5, 1896, aged 67 years.