Louis, (mostly named Loetje) and Hans Cohen were children of Mozes Cohen and Betje van Gelder. Their parents married in 1930 and lived at that time in Rotterdam, where they both were born. In 1936 the Cohen family moved to Den Haag, were father and mother went to live at separate addresses.
When Louis was born, his father was 58 and his mother 25 years old. Presumably due to the huge difference of…