Maurits Vorst married Johanna Kinsbergen on 25 February 1942 in Amsterdam. They had a child Johanna.
Maurits was previously married to Judith Prins in 1921 in Amsterdam. Rozette Henny and Heintje Minette were their daughters. They divorced in 1931.
Stadsarchief Amsterdam, archiefkaart Maurits Vorst