He is married to (Not public).
They got married on June 18, 1941 at Bodegraven , he was 20 years old.Source 1
Child(ren):
P.N Kalkman Pag 108.
4 kinderen bekend.
Xlp. JAN KALKMAN. Geb. Bodegraven 4 juli 1920. Manufacturier. Zn. van Jan Kalkman en Niesa Akerboom. Tr. Bodegraven 18 juni 1941 Willempje Zwaan, geb. Bodegraven 14 juni 1922, d. van Arijanus Zwaan, groententhandelaar, en Dirkje Nagtegaal. Wilhelminastraat 24, Bodegraven.