He is the son of the artist and poet Julian Trevelyan (1910–1988) and his first wife, the potter Ursula Darwin (later Mommens) (1908–2010).
His second film was The Ship Hotel, Tyne Maine (1966, 35 mins, 16mm, black and white), a documentary centred on a Tyneside pub, concentrating on a group of people who go there every Sunday to drink and sing.
His next film was Big Ware (1971, 16mm colour 40 mins), a TV documentary about George Curtis, a traditionalist potter.
In 1976, Trevelyan was hired to direct a dramatised film about the Mongols and the building of Isfahan, to be produced by David Frost, however the Iranian Revolution curtailed the project.
[2][7] The tools are instead designed for weeding by the traditional, but labour intensive, practice of removing individual plants (RIP).
Andrew Lambirth, writing in The Daily Telegraph, commented that the book "is an anecdotal and appreciative account of [Julian Trevelyan's] art.
It makes riveting reading, but the real surprise is the richness and variety of the illustrations, many previously unknown.