(1) He is married to Klazina Renses.
They got married on August 9, 1928 at Groningen, Groningen, Nederland , he was 24 years old. They were 24 years old and 19 years old, respectively.Source 2
(2) He is married to Wendelina Wiersema.
They got married on September 16, 1931 at Amsterdam, Noord-Holland, Nederland , he was 27 years old. They were 27 years old and 23 years old, respectively.Source 3
Willem Adolf Koch | ||||||||||||||||||
(1) 1928 | ||||||||||||||||||
Klazina Renses | ||||||||||||||||||
(2) 1931 | ||||||||||||||||||
Wendelina Wiersema |