Who was Jules Perrot in Edgar Degas’s The Ballet Class?

In Edgar Degas’s painting The Ballet Class (created between 1873 and 1876), Jules Perrot is depicted as the ballet master who is assessing the dancers.12

Jules Perrot (1810–1892) was a renowned French virtuoso dancer and master choreographer celebrated for his work during the Romantic period. After a distinguished international career that included serving as the principal ballet master of the Imperial Russian Ballet, Perrot retired from his primary stage career following a final season in Milan in 1864. In his later years, he taught classes at the Paris Opéra, where he was immortalized by Edgar Degas in works such as The Ballet Class and The Dance Class.32