Worker: Which opera original produces in 1831 by Vincenzo Bellini?
Vincenzo Negrini:  Born in Cesena, he sang leading bass and baritone roles in Italy's major opera houses and created several roles in early 19th-century operas, most notably Oroveso in Bellini's "Norma" and Folco in Donizetti's "Ugo, conte di Parigi". Norma (opera):  It was first produced at La Scala in Milan on 26 December 1831.
i don't know