Fritz Duquesne n various disguises. Frederick "Fritz" Joubert Duquesne (21 September 1877 - 24 May 1956); sometimes Du Quesne; was a South African Boer soldier; prisoner of war; big game hunter; journalist; war correspondent; stockbroker; saboteur; spy; and adventurer whose hatred for the British (due to their treatment of Boer women and children) caused him to volunteer to spy for Germany during both World Wars. As a Boer spy he was known as the "Black Panther"; but he is also known as "the man who killed Kitchener"; since he claimed to have sabotaged and sunk HMS Hampshire; on which Lord Kitchener was en route to Russia in 1916; although forensics of the ship do not support this claim.As a German spy; he went by the code name DUNN. In 1942; he and 32 other members of the Duquesne Spy Ring were convicted in the largest espionage conviction in the history of the United States.Boston: Small; Maynard & Co. 1919.From: Thomas J. Tunney; Throttled! The detection of the German and anarchist bomb plotters. as told to Paul Merrick Hollister. Illustrated; etc.9083. bb. 12 plate opposite page 230London; British Library.