Note N572July 2003: checked US Holocaust Memorial Museum name search-name list (available at genealogy conference in DC) and found:
Seems very likely right person. Page of Testimony at Yad Vashem submitted 1970 by third cousin of Willy's wife, John Henry Richter -- says born 8 June 1899 in Stettin. Lived in Berlin during war. Married to Meta. Gives his death as 4 March 1943.
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