Alexandre Jean Albert Lavignac was a French music scholar, known for his essays on theory, and a minor composer.
Albert Lavignac
Charles Louis Ambroise Thomas was a French composer and teacher, best known for his operas Mignon (1866) and Hamlet (1868).
Thomas by Wilhelm Benque, c. 1895
Thomas in 1834 by Jean-Hippolyte Flandrin
Le caïd, 1849
Jean-Baptiste Faure as Hamlet, painted by Manet