When was the Austro-Hungarian-American actor who acted a leading role with Margaret Tallichet in  "Stranger on the Third Floor" (1940) born? 
Margaret Tallichet:  Her best-known leading role was with Peter Lorre in the film noir "Stranger on the Third Floor" (1940). Peter Lorre: Peter Lorre (born László Löwenstein; 26 June 1904 – 23 March 1964) was an Austro-Hungarian-American actor.
26 June 1904