Franz Joseph I of Austria the Empire on 6 October 1908. However a diplomatic crisis erupted, as both the Serbs and the Italians demanded compensation for the annexation, which the Austro-Hungarian government refused to entertain. The incident was not resolved until the revision of the Treaty of Berlin in April 1909, exacerbating tensions between Austria-Hungary and the Serbs. On 28 June 1914 Franz Joseph's nephew and heir Archduke Franz Ferdinand, and his morganatic wife Sophie, Duchess of Hohenberg, were assassinated by Gavrilo Princip, a Yugoslav nationalist of Serbian ethnicity, during a visit to Sarajevo. When he heard the news of the assassination, Franz Joseph said
Archduke Joseph Franz of Austria place of his siblings Marie Louise, Duchess of Parma, Ferdinand I of Austria, Archduchess Marie Caroline of Austria, Archduchess Caroline Ludovika of Austria, Archduchess Maria Anna of Austria, Archduke Johann Nepomuk of Austria, Archduchess Amalie Theresa of Austria, and (possibly) Archduke Franz Karl of Austria. His parents, Francis II, Holy Roman Emperor and Maria Theresa of Naples and Sicily, and his great-grandmother, Maria Theresa of Austria, are also buried there. Archduke Joseph Franz of Austria Archduke Joseph Franz Leopold of Austria (9 April 1799 – 30 June 1807) was the second son and seventh child of Francis II, the last