Cause of death: gangrene
Jean-Baptiste Lully (28 November [O.S. 18 November] 1632 – 22 March 1687) was a French composer, dancer and instrumentalist of Italian birth, who is considered a master of the French Baroque music style. Best known for his operas, he spent most of his life working in the court of Louis XIV of France and became a French subject in 1661. He was a close friend of the playwright Molière, with whom he collaborated on numerous comédie-ballets, including L'Amour médecin, George Dandin ou le Mari confondu, Monsieur de Pourceaugnac, Psyché and his best known work, Le Bourgeois gentilhomme.
Source : Wikipedia