He is married to (Not public).
They got married on January 24, 1968 at Hilversum , he was 28 years old.Source 1
Child(ren):
P.N Kalkman Pag. 111.
2 kinderen bekend.
Xlac. JAN KALKMAN. Geb. Hilversum 24 aug. 1939. Ambtenaar in dienst van de gemeente Hilversum. Zn. van Gideon Kalkman en Jannigje Egbertha Plomp. Tr. Hilversum 24 jan. 1968 Annechien Snippe, geb. Emmen 19 dec. 1942, d. van Gezinus Snippe, landbouwer, en Harmina Johanna Niesje Zwaveling, Van Hogendorplaan 17, Hilversum.