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.
Mauro-Roman Kingdom
The last recorded king of the "Regnum Maurorum et Romanorum" was Garmul (also known as Garmules) who would resist Eastern Roman rule in Africa. In the late 560s, Garmul launched raids into Roman territory, and although he failed to take any significant town, three successive generals, Praetorian prefect Theodore (in 570 AD) and the two "magistri militum" Theoctistus (in 570 AD) and Amabilis (in 571 AD), are recorded by the Visigoth historian John of Biclaro to have been killed by Garmul's forces. His activities, especially when regarded together with the simultaneous Visigoth attacks in Spania, presented a clear threat to the province's authorities. Garmul was not the leader of a mere semi-nomadic tribe, but of a fully-fledged barbarian kingdom, with a standing army. Thus, the new Eastern Roman emperor, Tiberius II Constantine, re-appointed Thomas as praetorian prefect of Africa, and the able general Gennadius was posted as "magister militum" with the clear aim of reducing Garmul's kingdom. Preparations were lengthy and careful, but the campaign itself, launched in 577–78 AD, was brief and effective, with Gennadius utilizing terror tactics against Garmul's subjects. Garmul was defeated and killed in 578 AD.