Gunther was succeeded as king by Gunderic (or Gundioc or Gondioc) in 437. After 443, the remaining Burgundians were resettled by Aetius to the (i.e. Savoy) region of present-day central France, again as , in the Roman province of , where they established their capital at Lugdunum (present-day Lyon). Their efforts to enlarge their kingdom down the Rhone river brought them into conflict with the Visigothic Kingdom in the south. In 451, Gunderic joined forces with Aetius against Attila, leader of the Huns, in the Battle of the Catalaunian Plains.