Etienne-Augustin Leroy, the son of clockmaker Charles Leroy, became a master horologist en 1758. The Leroy workshop, in the rue St Denis, worked for the Royal Courts of France, Sweden and Saxony. Etienne-Augustin Leroy became Clockmaker to the King. After his father’s retirement in 1770, he continued to use the signature “Charles Leroy à Paris”. Several clocks bearing this signature, almost certainly made by Etienne-Augustin, were in the French Royal collections before the Revolution.