Major Greenwood
Leonard Hill recalled, "By recognising the ability of a student with nothing behind him to show his worth and by appointing him my assistant I may claim to have started Greenwood on his career."He co-authored a number of papers (see publications) with Ethel Newbold during his tenure there (and wrote a touching obituary for her on her early death in 1933).Greenwood produced a large body of research, was the first holder of important positions in modern medical statistics and wrote extensively on the history of his subject, but as Austin Bradford Hill wrote in his obituary, "in the future, it may well indeed seem that one of his greatest contributions, if not the greatest, lay merely in his outlook, in his statistical approach to medicine, then a new approach and one long regarded with suspicion.And he fought this fight continuously and honestly—for logic for accuracy, for ‘little sums.’" His name is attached to the Greenwood formula for the variance or standard error (SE) of the Kaplan–Meier estimator of survival.Greenwood lived at Loughton, where among his neighbours were Sir Frank Baines, Millais Culpin, and Leonard Erskine Hill.