Petrus Jacobus ter Plegt, born in Warmenhuizen on January 14, 1878, son of Gerrit Jan ter Plegt (gemeente secretaris te Warmenhuizen (1908)) and Neeltje Holterman, landmeter bij het kadaster, died after 1949, aged at least 71 years.

Petrus was married on August 26, 1908, at the age of 30 to
Jetje Catharina Reinouts van Haga (aged 20 years), born in Sneek on March 4, 1888, daughter of Petrus Reinouts van Haga (tobacco manufacturer and tabakskerver (1888)) and Catrina Joanna Bangma, died between 1926 and 1949, aged 38 years to 61 years.