Lionel Sharples Penrose (11 June, 1898 - 12 May, 1972) was a British psychiatrist, medical geneticist, mathematician and chess theorist, who carried out pioneering work on the genetics of mental retardation. Penrose's "Colchester Survey" of 1938 was the earliest serious attempt to study the genetics of mental retardation. Wikipedia
The definitive Wikipedia entry for Lionel Penrose. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Lionel_Penrose
... human genetics, Professor Penrose has played a major role in laying the foundations for the rapid development of this branch of science during recent years, as its general ... www.laskerfoundation.org/awards/library/1960b_cit.shtml