Question: Who wrote the opera first performed on 26 October 1786 at the medieval castle and subsequent palace which served as a residence for the French monarchs from Louis VII to Napoleon III?
Sentence (from "Philip II of France"): The son of King Louis VII and his third wife, Adèle of Champagne, he was originally nicknamed "Dieudonné" "God-given" because he was the first son of Louis VII, born late in his father's life.
Relevant evidence: No