Very popular throughout the North is "The Princess on the Glass
Mountain." (Hylten-Cavallius and Stephens, p. 390, somewhat
abridged) who may be looked upon as a relative of the Brunhilde
of heroic legend, who may be brought down from her inaccessible
height only by the bravest of the brave. The "wild man" who
appears in the part of a magician to aid the hero, is a
familiar figure in Northern legend. King Harald Harfagr,
according to the "Book of Flateyar," released a "wild man" of
this kind from captivity at his father's court, when a boy of
five.