 After Oxford, Williams spent his two-year national service flying Spitfires in Canada for the Royal Air Force. While on leave in New York, he became close to Shirley Brittain Catlin (born 1930), daughter of the novelist Vera Brittain and the political scientist George Catlin. They had already been friends at Oxford. Catlin had moved to New York to study economics at Columbia University on a Fulbright scholarship.
