Keetje Schnitzler was the third of the seven children of Samuel and Sara Schnitler, who, as cousins in the 1st degree were married 21 November 1866 in Rotterdam. Keetje’s parents have passed away already respectively in 1913 and 1918 and after the passing of her mother, her brother David Schnitzler became “head of the family”. When her brother David then got married on 6 December 1922 to Sara den …