Final answer:
Percy Bysshe Shelley is the English Romantic poet born in 1792 known for the sonnet 'Ozymandias' who tragically drowned in 1822.
Step-by-step explanation:
The English Romantic poet born in 1792 in Sussex, known for his major sonnet "Ozymandias," and who tragically drowned in 1822, is Percy Bysshe Shelley. Shelley was a rebel poet who criticized his home country from his exile in Italy, expressing his socialist criticism of society and denunciation of Christianity. He had a dramatic and short life; he died at the age of 30 in a sailing accident off the Italian coast. His death was foreshadowed in his poem "Adonais", which describes death by drowning.