Ronald Brunlees McKerrow was born in Putney in 1872, the son of a civil engineer, and was educated at Harrow, King’s College, London, and Trinity College, Cambridge. After leaving university he spent three years teaching English in Tokyo before beginning a period of intense literary and bibliographical study, largely at the British Museum, two important results of which were his edition of the works of Thomas Nashe (1904-10) and his Notes on Bibliographical Evidence (1914). The latter, revised as An Introduction to Bibliography for Literary Students (1927), became a standard work. From 1914 McKerrow also gave lectures in English literature, and later bibliography, at King’s College, London. In 1917 he was appointed managing director of the publishers Sidgwick & Jackson, and this was his main occupation till his death, but he was also honorary secretary of the Bibliography Society from 1912 to 1934, editor of the Review of English Studies (which he founded) from 1925 to 1940, and editor of The Library from 1934 to 1937. In 1929 he accepted an invitation to prepare an edition of Shakespeare for the Clarendon Press, but, though he prepared a good deal of material, only a general textual introduction ever saw print.