Petronella Alderts, born circa 1736.

Petronella was married to
Coenraad Smit, born circa 1730.

• 1 : Thomas Coenraads Smit, christened in Harlingen on October 14, 1762.
  

• 2 : Aldert Coenraads Smit, christened in Harlingen on December 6, 1764.
  

• 3 : Isaac Coenraads Smit, christened in Harlingen on May 24, 1767.
  

• 4 : Berbera Coenraads Smit, christened in Harlingen on October 30, 1770, died there on May 6, 1846, aged 75 years.
  Berbera got the banns published in Harlingen on February 18, 1792 and was married there on March 4, 1792 in church, at the age of 21 to Joost Rinia Gonggrijp (aged 23 years), christened in Harlingen on July 26, 1768, son of Rinia Joostes Gonggrijp and Ake Harmens Wassenaar, opzichter der begraafplaats and teacher, died in Harlingen on October 29, 1846, aged 78 years.