Beau·mar·chais 
(bō-mär-shā), Pierre Augustin Caron de 1732-1799.
(bō-mär-shā), Pierre Augustin Caron de 1732-1799. French writer whose best-known works are the comic plays Le Barbier de Séville (1775) and Le Mariage de Figaro (1784), which inspired operas by Rossini and Mozart.