Lotharius
Lotharius is the Latinized form of the Germanic given name Lothar, and it appears in medieval Latin chronicles and charters to refer to several rulers and nobles within the Frankish and Holy Roman realms. The form was especially common from the 9th to the 11th centuries among Carolingian and Ottonian elites, often appearing in Latin-language texts that record their reigns and genealogies.
Notable bearers include Lotharius I (also known as Lothar I) (c. 795–855), who served as King of
In modern usage, Lotharius appears chiefly in historical writing and in discussions of Carolingian and Ottonian-era