 The local princes were deposed for following the anti-Frankish rebellion of the Lower Pannonian prince Ljudevit Posavski and replaced by a Germanic (primarily Bavarian) ascendancy.By the 843 Treaty of Verdun, it passed into the hands of Louis the German (804–876) who, according to the "Annales Fuldenses" (863), gave the title of a "prefect of the Carantanians" ("praelatus Carantanis") to his eldest son Carloman.In 887 Arnulf of Carinthia (850–899), a grandson of Louis the German, assumed his title of King of the East Franks and became the first Duke of Carinthia.