Question: What is the date of death of Louis Joseph, Dauphin Of France's mother?
Sentence (from "Louis Joseph, Dauphin of France"): As son of a king of France, he was a "fils de FranceSon of France"), and as the eldest son and heir apparent, he was Dauphin of France, (the twenty-sixth "heir to the throne" of the Valois and Bourbon monarchies).
Relevant evidence: No