Do both Simon Boccanegra and Le roi d'Ys have the same number of acts?
Le roi d'Ys Le roi d'Ys ("The King of Ys") is an opera in three acts and five tableaux by the French composer Édouard Lalo, to a libretto by Édouard Blau, based on the old Breton legend of the drowned city of Ys. That city was, according to the legend, the capital of the kingdom of Cornouaille.
Simon du Bosc Simon du Bosc, a French religious, abbot of Cerisy, and then fifty-eighth abbot of Jumieges from 1391 to his death on 14 September 1418. He attended several councils where he was distinguished by his eloquence and the uprightness of his judgment.