(Francis) Peyton Rous, FRS (October 5, 1879 – February 16, 1970) was born in Woodlawn, Maryland in 1879 and received his B.A. and M.D. from Johns Hopkins University. He was involved in the discovery of the role of viruses in the transmission of certain types of cancer. In 1966 he was awarded a Nobel Prize in Physiology or Medicine for his work.