Francois-Joseph Marteau is first recorded by Nocq in February 1741. Before this, as engraver to Louis XV, he had been responsible for a number of important medals. The following month he was admitted as master goldsmith and entered his maker’s mark, FM a hammer between. In 1743 he took Louis-Guillaume Casse as apprentice and in 1747, Jean-Francois Balzac. In 1755, he acted as executor for Louis-Francois Aubert, the celebrated enameller. His own death was registered by another apprentice, Charles de Loyen, followed by burial at St Germain l’Auxerrois.