William Wordsworth was a major English Romantic poet who helped launch the Romantic Age in literature with the 1798 publication of Lyrical Ballads alongside Samuel Taylor Coleridge. Wordsworth's magnum opus is considered The Prelude, an autobiographical poem about his early years that was published posthumously. He had a seminal influence over poetry with his concept of poetry emerging from emotions recollected in tranquility. Wordsworth served as Britain's Poet Laureate from 1843 until his death in 1850.