Jerome Phelypeaux, Comte de Pontchartrin, became Chancellor of France and Secretary of State for the Navy. His father had also been Chancellor of France. The Phelypeaux family had apparently produced nine Secretaries of State during a period of one hundred and fifty years.
On 28 February 1697 he married Eleonore Christine de La Rochefoucauld, Mademoiselle de Chefboutonne, and they became the parents of five children. On 23 June 1708 he lost his wife and, in 1712, bought from his brothers-in-law the Barony of Chefboutonne, which he further exalted into a Marquisate. His acquisition was made at the cost of 300,000 livres, of which 180,000 was for the Barony of Chefboutonne and La Foret, 100,000 for the lands of Javarzay, and 20,000 for the Chevigne estate.
Having become a widower, the Comte de Pontchartrin married again, on the 31st July 1713, to Helenene Rosalie Angelique d'Aubepine and they became the parents of two daughters.
For the first few months the Comte de Pontchartrin took part in the Regency Council during the minority of Louis XV. According to Saint Simon, he was totally incompetent: "Impervious to insults, he held on clinging to useless remnants, idle and silent in his old place. His only function was to snuff out the candles in the Regent's Council. Everyone wanted to get rid of this sad old fellow. The Duc d'Orleans, like the others, wondered at his patience, but never thought of getting rid of him."
 

Source: Leo van de Pas