THE KING OF CASTILLE.
COUNT ALARCOS, a Prince of the Blood.
COUNT OF SIDONIA.
COUNT OF LEON.
PRIOR OF BURGOS.
ORAN, a Moor.
FERDINAND, a PAGE.
GUZMAN JACA, a BRAVO.
GRAUS, the Keeper of a Posada.

SOLISA, Infanta of Castille, only child of the King.
FLORIMONDE, Countess Alarcos.
FLIX, a Hostess.

Courtiers, Pages, Chamberlains, Bravos, and Priests.