He is married to Alke van der LAAN.
http://allegroningers.nl/personen/weergave/akte/layout/default/id/a85f3162-055c-05c9-9e46-a8ef7ddf990a/q/persoon_achternaam_t_0/laan/q/persoon_voornaam_t_0/jan/q/persoon_rol_s_0/0/q/persoon_achternaam_t_1/b*ema/q/persoon_voornaam_t_1/har*na/q/persoon_rol_s_1/0
They got married on October 27, 1927 at Groningen , he was 24 years old.
http://allegroningers.nl/personen/weergave/akte/layout/default/id/a85f3162-055c-05c9-9e46-a8ef7ddf990a/q/persoon_achternaam_t_0/laan/q/persoon_voornaam_t_0/jan/q/persoon_rol_s_0/0/q/persoon_achternaam_t_1/b*ema/q/persoon_voornaam_t_1/har*na/q/persoon_rol_s_1/0
The data shown has no sources.