Jean-Baptiste Baillon was a very famous, and at that time the largest, watchmaker in Paris in the 18th Century, he became a master watchmaker in 1727, his business was first on the Place Dauphine later in the Rue Dauphine. A private factory was located in Saint-Germain-en-Laye, where different watchmakers worked for him, which was quite exceptional at that time. Baillon was a watchmaker to the Queen of France, Maria Leczinska in1738, “Valet de Chambre de la Reine-Ordinaire Watchmaker” by 1748, “Premier Valet de Chambre de la Reine”, and from about 1770 watchmaker at the court of Queen Marie Antoinette, “Premier Valet de Chambre and Valet de Chambre, Watchmaker Ordinaire de la Dauphine” to Marie-Antoinette. He died in 1772.