Trifko Grabež society. For the next two years he spent most of his spare time with other nationalists who favoured a union between Bosnia and Herzegovina and Serbia. When it was announced that Archduke Franz Ferdinand, the heir to the throne of Austro-Hungarian Empire, was going to visit Bosnia and Herzegovina in June 1914, Colonel Dragutin Dimitrijević, the chief of the Intelligence Department in the Serbian Army and head of the Black Hand, sent seven men, Grabež, Nedeljko Čabrinović, Vaso Čubrilović, Cvjetko Popović, Danilo Ilić, Muhamed Mehmedbašić and Gavrilo Princip to Sarajevo to assassinate him. Each man was given either a revolver
Archduke Franz Ferdinand of Austria not normally appear in public beside him. She would not be allowed to ride in the royal carriage or sit in the royal box in theaters. The wedding took place on 1 July 1900, at Reichstadt (now Zákupy) in Bohemia; Franz Joseph did not attend the affair, nor did any archduke including Franz Ferdinand's brothers. The only members of the imperial family who were present were Franz Ferdinand's stepmother, Princess Maria Theresa of Braganza, and her two daughters. Upon the marriage, Sophie was given the title "Princess of Hohenberg" ("Fürstin von Hohenberg") with the style "Her Serene Highness" ("Ihre Durchlaucht").