(1) He is married to Geertruida Grevel.
They got married on July 20, 1921 at rotterdam , he was 20 years old.Source 2
(2) He is married to Antonetta Alijda Bergeman.
They got married on February 12, 1930 at rotterdam , he was 29 years old.Source 3
Gerardus Jan van der Kraan | ||||||||||||||||||
(1) 1921 | ||||||||||||||||||
Geertruida Grevel | ||||||||||||||||||
(2) 1930 | ||||||||||||||||||
Antonetta Alijda Bergeman |