He is married to Stijntje van der Ploeg.
They got married on May 22, 1915 at Westdongeradeel, Friesland, Nederland, he was 24 years old.Source 3
Child(ren):
grandparents
parents
brothers/sisters
children
Jacob Posthumus | ||||||||||||||||||||||||||||||||||
1915 | ||||||||||||||||||||||||||||||||||
Stijntje van der Ploeg | ||||||||||||||||||||||||||||||||||
Overlijdensregister 1950, Westdongeradeel
https://graftombe.nl/names/info/619139/posthumus
Huwelijksregister 1915, Westdongeradeel