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 Albrecht Franz, Duke of Teschen Archduke Albrecht Franz, Duke of Teschen Albert Franz Josef Karl Friedrich Georg Hubert Maria, Archduke of Austria, Prince Royal of Hungary and Bohemia, Duke of Teschen (In German: "Erzherzog Albrecht Franz Josef Karl Friedrich Georg Hubert Maria von Österreich, Herzog von Teschen") – (24 July 1897 – 23 July 1955) was a member of the House of Habsburg and titular pretender to the Duchy of Teschen. Archduke Albrecht Franz was born in Vienna, Austria-Hungary, only son of Archduke Friedrich, Duke of Teschen (1856–1936, son of Archduke Karl Ferdinand of Austria and Archduchess Elisabeth Franziska of Austria) and his wife, Princess