a possibly historical Danish king of the 9th century, the subject of an Old Icelandic saga and in accounts by the Danish historian Saxo Grammaticus: involved in great battles with his stepfather, Adils of Sweden.
Origin: < ON Hrólfr, equiv. to hró(thr) fame + (ú)lfrwolf, c. OE Hrōthwulf; kraki wretch (applied ironically)