"Jean Herauld Gourville (July 10, 1625 – June 14, 1703) was a French adventurer.
He was born in La Rochefoucauld, in today's Charente département. At the age of eighteen he entered the house of La Rochefoucauld as a servant, and in 1646 became secretary to François de La Rochefoucauld, author of the Maximes. Resourceful and quick-witted, he rendered services to his master during the Fronde, in his intrigues with the parliament, the court or the princes. In these negotiations he made the acquaintance of Condé, whom he wished to help to escape from the château of Vincennes; of Mazarin, for whom he negotiated the reconciliation with the princes; and of Nicolas Fouquet." - (en.wikipedia.org 23.09.2022)