Roman emperor
The Western Roman Empire collapsed in the late 5th century. Romulus Augustulus is often considered to be the last emperor of the West after his forced abdication in 476, although Julius Nepos maintained a claim recognized by the Eastern Empire to the title until his death in 480. Following Nepos' death, the Eastern Emperor Zeno abolished the division of the position and proclaimed himself as the sole Emperor of a reunited Roman Empire. The Eastern imperial lineage continued to rule from Constantinople ("New Rome"); they continued to style themselves as Emperor of the Romans (later βασιλεύς Ῥωμαίων in Greek), but are often referred to in modern scholarship as Byzantine emperors. Constantine XI Palaiologos was the last Roman emperor in Constantinople, dying in the Fall of Constantinople to the Ottomans in 1453.
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.