He served at
Minden and in other campaigns, and was made a
marshal of France in 1775, on the same day as his brother. He was long in great favour at court, and his wife,
Anne d'Arpajon, Comtesse de Noailles, was first lady of honour to
Marie Antoinette, and was nicknamed by her Madame
Etiquette. This court favor brought down punishment in the days of the
French Revolution, and the old marshal, his sister, his wife, daughter-in-law and granddaughter were all
guillotined on 27 June 1794. Twenty-five days later, the widow, daughter-in-law, and granddaughter of the 4th Duc de Noailles were also guillotined. The Comte de Noailles received the title of
Prince de Poix in 1729 (recognized by King
Philip V of Spain), and that of
Duque de Mouchy with
Grandeeship attached in 1747. In 1767, he received the additional French title of "Duc de Poix"
à brevêt. The title of Prince de Poix passed to his son, Charles-Adrien, as a
courtesy title on the latter's birth in 1747, and after the child's death later that year and the infant deaths of two more sons, came to rest on Noailles's successor,
Philippe-Louis-Marc-Antoine. Two of de Noailles's three surviving sons,
Philippe-Louis-Marc-Antoine and
Louis-Marie, were members of the
National Constituent Assembly; Louis-Marie's wife died with his parents. == References ==