Early modern period
In the early modern period, the Holy Roman Empire was a union of territories in Central Europe under a Holy Roman Emperor the first of which was Otto I. The last was Francis II, who abdicated and dissolved the Empire in 1806 during the Napoleonic Wars. Despite its name, for much of its history the Empire did not include Rome within its borders.
Holy Roman Emperor
The Holy Roman Emperor (also "German-Roman Emperor", "Roman-German emperor"; historically "", "Emperor of the Romans") was the ruler of the Holy Roman Empire (considered the successor of the Western Roman Empire) during the medieval and early modern periods. The title was, almost without interruption, held in conjunction with title of King of Germany ("rex teutonicorum") throughout the 12th to 18th centuries.