15 September 1890 (Torquay, Devon, England) - 12 January 1976 (Winterbrook House, Winterbrook, Oxfordshire, England / aged 85
"Ellery Queen" served as a joint pseudonym for the cousins Dannay and Lee, as well as the name of the primary detective-hero they created. During the 1930s and much of the 1940s, that detective-hero was possibly the best known American fictional detective.
Arthur Conan Doyle
22 May 1859 (Edinburgh, Scotland) - 7 July 1930 (Crowborough, England/aged 71)