Levie van Kollem was a son of Eleazar van Kollem and Naatje Philip Kater and was born in Amsterdam on 18 October 1884. He became a diamond trader and was a member of the Bourse of Diamond Trade (Beurs van Diamanthandel) on the Weesperplein in Amsterdam. He married Jeannette Michel on 30 January 1908, a daughter of Friedrich Michel and Lena Reiwit. Jeannette was born in Amsterdam on 6 March 1889 an…