Are both Christopher Hitchens and Richard Llewellyn writers?
Richard Llewellyn Richard Dafydd Vivian Llewellyn Lloyd (8 December 1906 – 30 November 1983), known by his pen name Richard Llewellyn, was a British novelist.
John Christopher Sam Youd (16 April 1922 – 3 February 2012), known professionally as Christopher Samuel Youd, was a British writer, best known for science fiction under the pseudonym John Christopher, including the novels "The Death of Grass", "The Possessors", and the young-adult novel series "The Tripods". He won the Guardian Prize in 1971 and the Deutscher Jugendliteraturpreis in 1976.