In 1752 Buffon married Marie-Françoise de Saint-Belin-Malain, the daughter of an impoverished noble family from Burgundy, who was enrolled in the convent school run by his sister. Madame de Buffon's second child, a son born in 1764, survived childhood; she herself died in 1769. When in 1772 Buffon became seriously ill and the promise that his son (then only 8) should succeed him as director of the Jardin became clearly impracticable and was withdrawn, the King raised Buffon's estates in Burgundy to the status of a county – and thus Buffon (and his son) became a Count. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1782. Buffon died in Paris in 1788.