Holy Roman Empire
The empire was dissolved on 6 August 1806, when the last Holy Roman Emperor Francis II (from 1804, Emperor Francis I of Austria) abdicated, following a military defeat by the French under Napoleon at Austerlitz (see Treaty of Pressburg). Napoleon reorganized much of the Empire into the Confederation of the Rhine, a French satellite. Francis' House of Habsburg-Lorraine survived the demise of the empire, continuing to reign as Emperors of Austria and Kings of Hungary until the Habsburg empire's final dissolution in 1918 in the aftermath of World War I.
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.