The Regő is an ancient Hungarian name. It derives from the Schytian ragi word which means morning (in Hungarian: "reggel"). The Regős lads walked the street of a village and song Regős ének (the Regős ének is an ancient Hungarian singing form.)
Roff was the other brother of Mundzuk prince. The name probably means strencher, prolonger (in Hungarian: "nyújtózkodó, elnyúló"). It can be connected with the runic writing.