Original sentence: William Henry West Betty (1791 - 1874) was by far the most popular child actor of the nineteenth century, billed as the "Young Roscius" for his performances in adult roles like Hamlet, Romeo, Rolla in Pizarro and Norval in Douglas for two seasons from 1804 to 1806 at Covent Garden Theatre
Edited sentence: William Henry West Betty (1791–1874) was by far the most popular child actor of the nineteenth century, billed as the "Young Roscius" for his performances in adult roles like Hamlet, Romeo, Rolla in Pizarro and Norval in Douglas for two seasons from 1804 to 1806 at Covent Garden Theatre