 As the Comte de Guiche, he is a major character in Edmond Rostand's 1897 play "Cyrano de Bergerac", where he is depicted at first as vain, lustful, and opportunistic.He is infatuated with Roxane, the heroine of the play, and tries to arrange her marriage to the Vicomte de Valvert as a "front" in order that he (the Count) may become her secret lover.When Cyrano kills Valvert in a duel, De Guiche becomes more open in his desires and tries to arrange his own marriage to her.