Pieter Gaastra, born in Sneek circa 1780, commissaris der beurtschepen, died in Sneek on May 5, 1833, aged approximately 53 years.

Pieter was married to
Pietje Reinders Krins, born circa 1806 (?).

• 1 : Baukje Gaastra, born in Sneek on April 24, 1829, died after 1899, aged at least 70 years.
  Baukje was married in Sneek on April 24, 1850, at the age of 21 to Wybren Reinouts Petrus' van Haga (aged 26 years), born in Sneek on February 20, 1824, son of Petrus Jans Haga (koopman (1823/1850), kastelein (1842/1843/1844), besteller (1852/1857) and stadsomroeper) and Tytje Reinouts, merchant, tabaksfabrikant (1876/1882), tabakskerver (1885) and tobacco manufacturer, died in Sneek on November 29, 1889, aged 65 years.