He is married to Jitske Spaak.
They got married on May 22, 1920 at Kollumerland c.a., Friesland, Nederland, he was 27 years old.Source 3
grandparents
parents
brothers/sisters
children
Ulbe de Jong | ||||||||||||||||||
1920 | ||||||||||||||||||
Jitske Spaak | ||||||||||||||||||
Geboorteregister 1892, Kollumerland c.a.
https://www.graftombe.nl/names/info/81355/jong_de
Huwelijksregister 1920, Kollumerland c.a.