Marion Jean Lewis OC OM FRSC (born 1925 in Windsor, Ontario) is a Canadian medical researcher, known for her work on the Rh factor[1][2] and on the Duffy antigen system.
She then spent another three months studying in London under world-renowned ‘blood groupers’ Robert Race and Ruth Sanger.
[1] From 1952 and 1960, Chown and Lewis made annual trips, visiting Canadian tribal groups, including the Blackfoot and Cree, to test their blood for Rh factors.
She and her colleagues at the Rh Laboratory, including Hiroko Kaita, became internationally renowned for their work.
[4] On 27 June 2019, Lewis was appointed as an Officer to the Order of Canada for her contributions to the prevention and treatment of Rh disease.