Jean-Antoine de Mesmes was born on 18 November 1661 as the eldest of the five children of Jean-Jacques de Mesmes and his wife Marguerite Bertrand de la Bazinière. His father and his grandfather had both been comtes d'Avaux and presidents at the Parlement of Paris. His mother was the daughter of Macé Bertrand de la Bazinière, trésorier de l'Épargne. engraved by Pierre Drevet. Note his attire as président à mortier: robe and striped ermine epitoge. The subject of this article, Jean-Antoine de Mesmes, may be easily confused with other members of his family who had the same first name, notably his grandfather Jean-Antoine de Mesmes, comte d'Avaux and his uncle Jean-Antoine de Mesmes, called d'Avaux, the diplomat.
Paris Parlement
In 1679 Jean-Antoine de Mesmes became procureur-général at the Parlement of Paris; conseiller in 1687. In 1688, at this father's death, he inherited his father's place as président à mortier, even though he had never been maître des recherches. In 1712, d'Avaux was appointed Premier President of the Parlement of Paris when his predecessor Pelletier resigned. He moved to the apartment reserved for the premier president in the Palais de la Cité and rented the Hôtel de Mesmes to John Law, who made it the seat of his Banque Générale. When Louis XIV died in 1715, the future Louis XV, his great-great-son, was five years old. According to custom Philippe of Orléans, the closest relative, would govern France as regent. However, Louis XIV made a will in which he appointed a regency council dominated by his favourite but illegitimate sonLouis-Auguste, Duke of Maine. The king gave this will to d'Avaux, the premier président for safe-keeping in August 1714. The will was opened after the king's death in September 1715. D'Orléans asked the Parlement of Paris to overrule the will. The parlement agreed and declared d'Orléans regent. In exchange Orléans gave the parlement back its. Jean-Antoine de Mesmes used this right later to admonish the regent in 1720 for the Law affair and for the appointment of Guillaume Dubois as Archbishop of Cambrai. This action earned the Parlement of Paris an exile to Pontoise.
Noble titles
While his father was alive, Jean-Antoine de Mesmes's title was vicomte de Neufchâtel. He became the fifth comte d'Avaux at his father's death in 1688. He was also seigneur de, et de Brie-Comte-Robert, marquis de Saint-Etienne, and vicomte de Neufchâtel.
On 22 September 1703 Jean-Antoine de Mesmes became Provost and Master of Ceremonies of the Order of the Holy Spirit. The order of the Holy Spirit is the highest order of chivalry in France, but membership and offices could be inherited and bought. Jean-Antoine de Mesmes bought this office from his paternal uncle and homonym Jean-Antoine de Mesmes, the diplomat for 160,000 livres.
Jean-Antoine de Mesmes married Marie-Therèse Feydeau in 1695. Her dowry was 350,000 francs in cash and 50,000 francs in other effects. She was the daughter of Denys Feydeau, seigneur de Brou. They had two daughters but no son. Both were rich heiresses. They were:
Marie-Anne-Antoinette, married in 1720 as his 2nd wife;
Henriette-Antoinette, married in 1715 Louis de Gélas de Leberon, marquis de Lautrec, the son of d'Ambres.
His elder daughter's husband was the eldest son and heir of Guy Aldonce de Durfort, duc de Lorges, the father-in-law of Louis de Rouvroy, duc de Saint-Simon. Jean-Antoine de Mesmes is therefore often mentioned in the memoirs of Saint-Simon where he is distinguished from his homonyms by his title of premier president.
Death, succession, and timeline
Jean-Antoine de Mesmes died suddenly on 23 August 1723 at the age of 61. As he had no son, his youngest and only surviving brother Jean-Jacques, numbered Jean-Jacques IV de Mesmes, the Maltese knight, succeeded him as the sixth and last comte d'Avaux. His younger daughter Henriette-Antoinette inherited. At his death, his family neglected to advertise his membership of the Academy in his obituary; when the Academy expressed a certain astonishment, his brother Jean-Jacques sent a letter of apology and regret.