Identity:
Leopold James Maxse was the editor of the National Review, and the son of Admiral F. A. Maxse, whom JW Knew well at the turn of the century.
Bibliography:
Who was Who: A Companion to Who's Who, London, 1920 et seq.; Hutcheson, John A., Leopold Maxse and the National Review, 1893-1914: Right-Wing Politics and Journalism in the Edwardian Era, New York, 1989; Who was who: a cumulated index, 1897-1990, London, 1991.