You know this fellow by his more famous collaborator, Mozart, but it is DaPonte who wrote the words to the operas, without which, of course, the singers would have naught to sing but rather random sol, fa, la, and ti.  In the 1820’s, he undignified the zenith of his career by a move to New York, where he railed against fate and social enemies in four (count ‘em) four volumes of memories…in Italian.