Original: Along with Lord Byron and Percy Bysshe Shelley, he was one of the key figures in the second generation of the Romantic movement, despite the fact that his work had been in publication for only four years before his death.
Simplified: He is often ranked as one of the five most important poets of the Romantic movement in English literature; the other four are William Wordsworth, Samuel Taylor Coleridge, Lord Byron, and Percy Bysshe Shelley.