Veljko Čubrilović Veljko Čubrilović Veljko Čubrilović (Serbian Cyrillic: Вељко Чубриловић; 6 June 1886 – 3 February 1915) was a Bosnian Serb who was involved in the assassination of Archduke Franz Ferdinand of Austria. He was born in Gradiška, Bosnia and Herzegovina and became a schoolteacher in Priboj Majevički. In 1914, as a member of the Black Hand secret society, he agreed to help Gavrilo Princip, Nedeljko Čabrinović, and Trifko Grabež assassinate Archduke Franz Ferdinand. His brother, Vaso Čubrilović, was also involved in the plot. On Sunday, 28 June 1914, Franz Ferdinand and Sophie von Chotkova were assassinated by Gavrilo Princip. Princip and
Dobroslav Jevđević secondary school in Sarajevo. There, he joined the revolutionary organisation known as Young Bosnia and became a friend of Gavrilo Princip, the assassin who killed Archduke Franz Ferdinand of Austria on 28 June 1914. The day of the assassination, Jevđević's father was arrested by the Austro-Hungarian police for his connections with the Serb revolutionary organisation "Narodna Odbrana" (National Defence). He was charged with high treason, sentenced to death by hanging in April 1916 and executed in Banja Luka. Jevđević was a successful writer and poet in his youth. He studied law at the universities of Zagreb, Belgrade, and Vienna and