Heading up the cast of tonight's performance was King Charles II of England, situated on the upper floor of Trinity's miserable wreck of a library, where several consecutive windows had been opened up and converted into temporary opera-boxes. The Queen, one Catherine of Braganza, a Portuguese princess with a famously inoperative womb, was seated to one side of His Majesty, pretending to understand English as usual. The guest of honor, the Duke of Monmouth (King Charles's son by his mistress Lucy Walter), was on the other side. The windows flanking the King's contained various elements of his court: one was anchored by Louise de Kéroualle, the Duchess of Portsmouth and the King's mistress. Another by Barbara Villiers, a.k.a. Lady Castlemaine, a.k.a. the Duchess of Cleveland, former lover of John Churchill, and the King's mistress.