Le médecin malgré lui (The Doctor in spite of himself; sometimes also called The Mock Doctor) is an opéra comique in three acts by Charles Gounod to a French libretto by Jules Barbier and Michel Carré after Molière's play, also entitled Le Médecin malgré lui.
http://en.wikipedia.org/wiki/Le_m%C3%A9decin_malgr%C3%A9_lui_(opera)
Charles-François Gounod (1818 – 1893) was a French composer, best known for his "Ave Maria", based on a work by Bach, as well as his opera "Faust". Another opera by Gounod, occasionally still performed, is "Roméo et Juliette".
http://en.wikipedia.org/wiki/Charles_Gounod
Includes a manuscript for the libretto in German, Der Arzt Wider Willen translated by Gorffmann