Francis II, Holy Roman Emperor
Francis II (; 12 February 1768 – 2 March 1835) was the last Holy Roman Emperor, ruling from 1792 until 6 August 1806, when he dissolved the Holy Roman Empire of the German Nation after the decisive defeat at the hands of the First French Empire led by Napoleon at the Battle of Austerlitz. In 1804, he had founded the Austrian Empire and became Francis I, the first Emperor of Austria, ruling from 1804 to 1835, so later he was named the one and only "Doppelkaiser" (double emperor) in history.
For the two years between 1804 and 1806, Francis used the title and style "by the Grace of God elected Roman Emperor, ever Augustus, hereditary Emperor of Austria" and he was called the "Emperor of both the Holy Roman Empire and Austria". He was also Apostolic King of Hungary and Bohemia as Francis I. He also served as the first president of the German Confederation following its establishment in 1815.
Pavia
It was at Pavia in 476 AD that the reign of Romulus Augustulus (r. 475-476), the last emperor of the Western Roman Empire ended and Roman rule ceased in Italy. Romulus Augustulus, while considered the last emperor of the Western Roman Empire, was actually a usurper of the imperial throne; his father Flavius Orestes having dethroned the previous emperor, Julius Nepos, and raised the young Romulus Augustulus to the imperial throne at Ravenna in 475. Though being the emperor, Romulus Augustulus was simply the mouthpiece for his father Orestes, who was the person who actually exercised power and governed Italy during Romulus Augustulus's short reign. Ten months after Romulus Augustulus's reign began, Orestes's soldiers under the command of one of his officers named Odoacer, rebelled and killed Orestes in the city of Pavia in 476. The rioting that took place as part of Odoacer's uprising against Orestes sparked fires that burnt much of Pavia to the point that Odoacer, as the new king of Italy, had to suspend the taxes for the city for five years so that it could finance its recovery. Without his father, Romulus Augustulus was powerless. Instead of killing Romulus Augustulus, Odoacer pensioned him off at 6,000 solidi a year before declaring the end of the Western Roman Empire and himself king of the new Kingdom of Italy.