The author of this publication has the consent of the person concerned (if still alive) for the publication of the data.
He is married to Helena Jacoba Sierag.
They got married on December 9, 1942 at Leiden, he was 22 years old.
grandparents
parents
brothers/sisters
children
Bertus de Zwijger | ||||||||||||||||||
1942 | ||||||||||||||||||
Helena Jacoba Sierag | ||||||||||||||||||
The data shown has no sources.