Question: the Libretto of  Amadis de Gaule was originaly set by an Italian-born French composer, instrumentalist, and dancer who spent most of his life working in whose court? 
Sentence (from "Amadis (Massenet)"): Amadis is an opera in three acts with prologue by Jules Massenet to a French libretto by Jules Claretie based on the Spanish knight-errantry romance "Amadis de Gaula", originally of Portuguese origin, by Garci Rodríguez de Montalvo.
Relevant evidence: No