Question: What is the date of death of Charles Guillaume Le Normant D'Étiolles's wife?
Sentence (from "Charles Guillaume Le Normant d'Étiolles"): Charles-Guillaume Le Normant d'Étiolles (8 May 1717 – 18 March 1799) is best known as being the husband of Madame de Pompadour or Jeanne-Antoinette Poisson, the illustrious mistress of King Louis XV of France.
Relevant evidence: Yes