In 1850 he moved his production from a windmill in Leiden to a steam factory in Weesp .
In 1835 Coenraad van Houten married Hermina van Houten ( unrelated ) from Groningen .
In 1850 Coenraad van Houten moved Coenraad van Houten 's production from a windmill in Leiden to a steam factory in Weesp .
In 1835 Coenraad van Houten married Hermina van Houten ( unrelated ) from Groningen .