During the disorders of 411–13 AD, the Roman usurper Jovinus established himself in Borbetomagus as a puppet-emperor with the help of King Gunther of the Burgundians, who had settled in the area between the Rhine and Moselle some years before. The city became the capital of the Burgundian kingdom under Gunther (also known as Gundicar). Few remains of this early Burgundian kingdom survive, because in 436 it was all but destroyed by a combined army of Romans (led by Aëtius) and Huns (led by Attila); a belt clasp found at Worms-Abenheim is a museum treasure. Provoked by Burgundian raids against Roman settlements, the combined Romano-Hunnic army destroyed the Burgundian army at the Battle of Worms (436), killing King Gunther. It is said that 20,000 were killed. The Romans led the survivors southwards to the Roman district of Sapaudia (modern day Savoy). The story of this war later inspired the "Nibelungenlied". The city appears on the Peutinger Map, dated to the 4th century.