The subject of an early French romance. Bellisant, sister of King Pepin, is married to Alexander, emperor of Constantinople. The archpriest treacherously accuses Bellisant to her husband and she is banished. A bear carries away one of her children (Orson), who is reared as a wild man. The other (Valentine) is found by Pepin and brought up as a knight. Valentine meets Orson, conquers him, brings him to the court, and tames him. Numerous adventures follow.
The story appeared in English about 1510. A ballad in Percy's Reliques deals with it.