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.
Last Roman Emperor
Saint Remigius, bishop of Reims and apostle of the Franks, baptised Clovis I, king of the Franks on 24 December 496. This baptism, leading to the conversion of the entire Frankish people to Nicene Christianity, was a momentous success for the Catholic Church and a seminal event in European history. He had a vision and prophesied that in the distant future, the last monarch who descended from the line of the kings of France, would be revealed and reestablish the Holy Roman Empire at the end of time. This prophecy was related through Hincmar, archbishop of Reims, and Rabanus Maurus Magnentius O.S.B., archbishop of Mainz. Marie-Julie Jahenny (1850-1941), also known as the "Breton" stigmatist, prophesied that Henry V, the Count of Chambord, was the chosen King. Despite his death, one of her predictions dated 1890 declares he is yet "reserved for the great epochs", i.e. the end of time.