Heroes
Beow-Wolf
In 2005, Andy Orchard theorized an etymology on the basis of the common Old Norse name Þórólfr (which literally translates to "Thor Wolf"), stating in parallel that a "more likely" meaning for the name would be the "wolf" of the Germanic god Beowulf

Biewolf
English philologist Walter William Skeat proposed an etymological origin in a term for "Woodpecker" citing the Old Dutch term biewolf for the bird. Skeat states that the black woodpecker is common in Norway and Sweden and further reasons that the "indominatable nature" and that the "bird fights to the death" could have potentially influenced the choice of the name. This etymological origin has been criticized as not being in accordance to Grimm's law and Skeat may have recanted the proposal at a later date

Beado-Wulf (war wolf)
The editors of Bosworth's monumental dictionary of Anglo-Saxon propose that Beowulf is a variant of beado-wulf meaning "war wolf" and that it is cognate with the Icelandic Bodulfr which also means "war wolf