He is married to Neeltje Dijkstra.
They got married on August 28, 1941 at Westdongeradeel, Friesland, Nederland, he was 28 years old.Source 3
grandparents
parents
brothers/sisters
children
Klaas de Groot | ||||||||||||||||||
1941 | ||||||||||||||||||
Neeltje Dijkstra | ||||||||||||||||||
Geboorteregister 1912, Kollumerland c.a.
https://www.graftombe.nl/names/info/125315/groot_de
Huwelijksregister 1941, Westdongeradeel