Order of the Iron Crown (Austria)
The Holy Roman Empire, ruled by the Habsburg dynasty, gave way to the Empire of Austria between 1804 and 1806. The last Holy Roman Emperor, Franz II, was proclaimed Emperor Franz I of Austria. His daughter, the Archduchess Maria Louise, was Napoleon’s second wife and Empress Consort, and the mother of Napoleon’s only legitimate son and heir, Napoleon, Duke of Reichstadt. With the collapse of Napoleon’s empire, Imperial Austria regained its traditional control of Lombardy as the Kingdom of Lombardy–Venetia.
Legacy of the Roman Empire
From a legal point of view the Roman Empire, founded by Augustus in 27 BC and divided into two "parts" after the death of Theodosius I in 395, had survived only in the eastern part which, with the deposition of the last western emperor Romulus Augustulus, in 476, had also obtained the imperial regalia of the western part reuniting from a formal point of view the Roman Empire.