When was the English poet on which Il corsaro was based born? 
Il corsaro: Il corsaro ("The Corsair") is an opera in three acts by Giuseppe Verdi, from a libretto by Francesco Maria Piave, based on Lord Byron's poem "The Corsair". Lord Byron: George Gordon Byron, 6th Baron Byron, FRS (22 January 1788 – 19 April 1824), commonly known simply as Lord Byron, was an English poet, peer, politician, and a leading figure in the Romantic movement.
22 January 1788