Julio is Camillo’s son, who is deeply in love with Don Bernard’s daughter Leonora.
An obedient son, he refuses to propose to her without his father’s approval, upon which Don Bernard’s consent depends. He is a friend of Henriquez’s – or at least believes himself to be one – and is an excellent, French-educated horseman who dresses rather too well for his station in life. Taking after his father, he is hot-blooded, emotional and passionate, and tends to overreact, never more perhaps than when he goes mad. He has little care for the court, especially when it takes him away from Leonora. Betrayed by Henriquez, he loses his wits, letting the gloomy side of his personality take over just as he loses control of his temper. He remains sensitive to music, though. He is quick to disguise himself to gain access to Leonora, and very physically affectionate when he finally gets her back. He is also generous enough to forgive Henriquez.