Princip, Gavrilo (gäv`rēlō prēn`tsēp), 1895–1918, Serbian political agitator, b. Bosnia. As a high-school student and a member of the Serbian nationalist secret society Union or Death (known as the Black Hand), he assassinated Archduke Francis Ferdinand Francis Ferdinand, 1863–1914, Austrian archduke, heir apparent (after 1889) of his uncle, Emperor Francis Joseph. In 1900 he married a Czech, Sophie Chotek.
..... Click the link for more information. and his wife at Sarajevo in 1914. His act precipitated World War I. Princip died of tuberculosis in an Austrian prison. He remains a Serbian hero.

Princip, Gavrilo

(born July 25, 1894, Obljaj, Bosnia—died April 28, 1918, Theresienstadt, Austria) Serbian nationalist and assassin of Archduke Francis Ferdinand. A Bosnian Serb, he sought to unite the southern Slavic peoples and destroy Austro-Hungarian rule in the Balkans and was trained in terrorism by the Black Hand society. When the Austro-Hungarian archduke made an official visit to Sarajevo in June 1914, Princip shot him and his wife, Sophie. The assassinations precipitated World War I. Princip was sentenced to 20 years in prison, where he died after the amputation of his arm.