Regino of Prüm states that the Hungarians "roamed the wildernesses of the Pannonians and the Avars and sought their daily food by hunting and fishing" following their arrival in the Carpathian Basin. Their advance towards the Danube seems to have stimulated Holy Roman Emperor Arnulf who was crowned emperor to entrust Braslav (the ruler of the region between the rivers Drava and Sava)] with the defense of all Pannonia in 896.