Because they were assassinated before.
Sophie, duchess of Hohenberg.
World War One Started..
The assassination of Archduke Franz Ferdinand and his wife Sophie
Archduke Franz Ferdinand's birth name is Franz Ferdinand Karl Ludwig Joseph von Habsburg-Lothringen.
Archduke Franz Ferdinand of Austria died on 1914-06-28.
Sophie.
Sophie, duchess of Hohenberg.
Franz Ferdinand was interred with his wife Sophie in Artstetten Castle, Austria in 1914.
Sophie, duchess of Hohenberg.
Gavrilo Princip and the black hand gang killed the archduke Franz Ferdinand and his wife Sophie
World War One Started..
On June 28 1914 Archduke Franz Ferdinand and his wife, Sophie, were murdered by thugs from the Black Hand.
His name was Archduke Franz Ferdinand, he was crowned prince of Austria-Hungary, his wife was Sophie Duchess of Hoenburg.
Archduke Franz Ferdinand was Austrian. Not german.
Franz Ferdinand died on June 28, 1914 at the age of 50.
The assassination of Archduke Franz Ferdinand and his wife Sophie
The assassination of Arch Duke Ferdinand of Austria.