Found something on:http://www.dutchjewry.org/
1) Hendrik Maurits Dudart, birth 16 Aug 1920 Amsterdam, died 9 Apr 1953 Amsterdam, occupation: reclame tekenaar (Advertising Drawer) married to:
Julia Van Gelder, birth 1 Jul 1921 Amsterdam, died 13 Nov 1976 Alkmaar (province of Noord-Holland)
On this website there are more children mentioned:http://tzorafolk.com/genealogy/html/dat264.htm
Data is not public so you can contact the owner of the website for more information.