Sir William Emrys Williams, CBE (5 October 1896 – 30 March 1977) was editor-in-chief of Penguin Books from 1936 to 1965 and an educationalist and powerhouse of popular education in the 20th century.[1] A close collaborator with Allen Lane, Penguin's founder, for over thirty years, Williams was the cultural force behind Penguin Books' success and was the creator of the Pelican imprint.