Claude Joseph Rouget de Lisle Claude Joseph Rouget de Lisle Claude Joseph Rouget de Lisle (), sometimes spelled de l'Isle or de Lile (10 May 1760 – 26 June 1836), was a French army officer of the French Revolutionary Wars. He is known for writing the words and music of the "Chant de guerre pour l'armée du Rhin" in 1792, which would later be known as "La Marseillaise" and become the French national anthem. Rouget de Lisle was born at Lons-le-Saunier, reputedly on a market day. His parents lived in the neighbouring village of Montaigu. A plaque was placed at the precise spot of his
Emile Armet de Lisle operate his factory, and, understanding the influence and fame of the Curie name, marketed his radium products as being certified by the Curies themselves. In 1913, with the Curies' partnership secured, de Lisle attempted an aggressive expansion of his radium business. The plan was centered around boosting production through the implementation of novel radium harvesting procedures developed and patented by Erich Ebler, a professor of chemistry at Heidelberg University, as a complement to Curie's own method. De Lisle enlisted the support of Curie for this project, inviting her to serve on a committee overseeing the technical aspects of the company.