(1) He is married to Pieternella Johanna Lankester.
They got married on July 29, 1914 at 's-Gravenhage, Zuid-Holland, Netherlands, he was 29 years old.Source 3
Child(ren):
(2) He is married to Johanna Gepkea Haijkens.
They got married on February 8, 1928 at Zeist, Utrecht, Netherlands, he was 42 years old.Source 4
grandparents
parents
brothers/sisters
children
Willem Johannes van der Kolff | ||||||||||||||||||||||||||||||||||
(1) 1914 | ||||||||||||||||||||||||||||||||||
Pieternella Johanna Lankester | ||||||||||||||||||||||||||||||||||
(2) 1928 | ||||||||||||||||||||||||||||||||||
Johanna Gepkea Haijkens | ||||||||||||||||||||||||||||||||||