Joseph Mallord William Turner RA (23 April 1775 – 19 December 1851), known in his time as William Turner, was an English Romantic painter, printmaker and watercolourist. He is known for his expressive colouring, imaginative landscapes and turbulent, often violent marine paintings. His artistic style developed over his lifetime, moving away from Romanticism—bypassing the following rising style of Realism—and, instead, with his later works being a significant precursor of and presaging the later Impressionist and Abstract Art movements that arose in the decades after his death. He left behind more than 550 oil paintings, 2,000 watercolours, and 30,000 works on paper. He was championed by the leading English art critic John Ruskin from 1840, and is today regarded as having elevated landscape painting to an eminence rivalling history painting. In 1969 art historian Kenneth Clark wrote of Turner: "He was a genius of the first order—far the greatest painter that England has ever produced..."
Turner was born in Maiden Lane, Covent Garden, London, to a modest lower-middle-class family and retained his lower-class accent, while assiduously avoiding the trappings of success and fame. A child prodigy, Turner studied at the Royal Academy of Arts from 1789, enrolling when he was 14, and exhibited his first work there at 15. During this period, he also served as an architectural draftsman. He earned a steady income from commissions and sales, which he often only begrudgingly accepted owing to his troubled and contrary nature. He opened his own gallery in 1804 and became professor of perspective at the academy in 1807, where he lectured until 1828. He travelled around Europe from 1802, typically returning with voluminous sketchbooks.