Sir Richard William Southern was a noted English medieval historian, based at the University of Oxford. He was educated at the Royal Grammar School, Newcastle, and at Balliol College, Oxford, where he graduated with a first-class honours degree in history. At Oxford, Southern's mentors were Sir Maurice Powicke and Vivian Hunter Galbraith. He was a fellow of Balliol from 1937 to 1961 (where he lectured alongside Christopher Hill), Chichele Professor of Modern History at Oxford from 1961 to 1969, and president of St John's College, Oxford, from 1969 to 1981. He was president of the Royal Historical Society from 1969 to 1973, and was knighted in 1974.