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
Prince Ernst of Hohenberg Prince Ernst of Hohenberg Prince Ernst of Hohenberg ("Ernst Alfons Franz Ignaz Joseph Maria Anton von Hohenberg"; 27 May 1904 – 5 March 1954) was the second son of Archduke Franz Ferdinand of Austria and his morganatic wife Sophie, Duchess of Hohenberg, who were assassinated at Sarajevo in 1914. Prince Ernst was born at his parents' estate at Konopiště in Bohemia. Following his parents' assassination, which precipitated World War I, Ernst and his siblings, Sophie and Maximilian, were taken in by their uncle, Prince Jaroslav von Thun und Hohenstein. In late 1918, their properties in Czechoslovakia, including Konopiště and Chlumec