Emperor
The first Austrian Emperor was the last Holy Roman Emperor Francis II. In the face of aggressions by Napoleon, Francis feared for the future of the Holy Roman Empire. He wished to maintain his and his family's Imperial status in the event that the Holy Roman Empire should be dissolved, as it indeed was in 1806 when an Austrian-led army suffered a humiliating defeat at the Battle of Austerlitz. After which, the victorious Napoleon proceeded to dismantle the old "Reich" by severing a good portion from the empire and turning it into a separate Confederation of the Rhine. With the size of his imperial realm significantly reduced, Francis II, "Holy Roman Emperor" became Francis I, "Emperor of Austria". The new imperial title may have sounded less prestigious than the old one, but Francis' dynasty continued to rule from Austria and a Habsburg monarch was still an emperor ("Kaiser"), and not just merely a king ("König"), in name.
Francis II, Holy Roman Emperor
In 1813, for the fourth and final time, Austria turned against France and joined Great Britain, Russia, Prussia and Sweden in their war against Napoleon. Austria played a major role in the final defeat of France—in recognition of this, Francis, represented by Clemens von Metternich, presided over the Congress of Vienna, helping to form the Concert of Europe and the Holy Alliance, ushering in an era of conservatism in Europe. The German Confederation, a loose association of Central European states was created by the Congress of Vienna in 1815 to organize the surviving states of the Holy Roman Empire. The Congress was a personal triumph for Francis, who hosted the assorted dignitaries in comfort, though Francis undermined his allies Tsar Alexander and Frederick William III of Prussia by negotiating a secret treaty with the restored French king Louis XVIII.