Stephen Southwold (1887–1964) attended St. Mark's College, Chelsea (1905–07) and worked as a schoolmaster. He served in the Royal Army Medical Corps from 1914 to 1919, then returned to teaching. He became a prolific British writer. Born Stephen Henry Critten, he used a number of pseudonyms, eventually changing his name to one of them, Stephen Southwold. He most often wrote as Neil Bell and also wrote as Miles, Stephen Green, S. H. Lambert, and Paul Martens.