He moved to Paris to become an artist, enrolling at Atelier Dix-Sept, Stanley William Hayter's engraving school, where he learned etching.He worked alongside artists including Max Ernst, Oskar Kokoschka, Joan Miró and Pablo Picasso.Because of his enthusiasm in his work and the desire to share it with others, Trevelyan became a highly influential teacher, with students including David Hockney, Ron Kitaj and Norman Ackroyd.He was an important leader of modern print techniques and today is regarded as a silent driving force behind the etching revolution of the 1960s.Bohun Gallery held a major retrospective of the artist's work 'Julian Trevelyan: Picture Language' 23 April - 1 June 2013, which included previously unseen paintings and etchings.