Duchy of Mantua
In the Treaty of Paris in 1814 the Austrians had confirmed their claims to the territories of the former Lombard Duchy of Milan, which had been ruled by the Habsburg Monarchy since 1714 and together with the adjacent Duchy of Mantua by the Austrian branch of the dynasty from 1708 to 1796, and of the former Republic of Venice, which had been under Austrian rule intermittently upon the 1797 Treaty of Campo Formio.