Born in
Newport, South Wales, Lewis attended
University College Cardiff, where he earned a bachelor's degree in Modern English and European History in 1940. After the war he then pursued postgraduate study at
Balliol College, Oxford, and a doctorate at
Harvard University. He emigrated to the Caribbean in 1950 and began his teaching career at the
University of Puerto Rico, establishing himself as a leading scholar in Caribbean Studies. He was awarded an honorary doctorate from the
University of the West Indies, Trinidad and Tobago, in 1984. He was Professor of Social Sciences at the University of Puerto Rico from 1951 to 1989 and also held visiting professorships at the Universities of
Chicago,
Harvard,
Brandeis,
UCLA,
Florida International and the University of the West Indies. Lewis remained in the Caribbean for more than five decades, devoted to his work in/on the region with his wife Sybil Farrell Lewis (Trinidad, 1927–2002) and his Caribbean family. He was director of the Institute of Caribbean Studies of the University of Puerto Rico from 1983 to 1987; and Sybil Farrell Lewis was the editor of the
Caribbean Studies journal from 1970 to 1980. Lewis died in San Juan, Puerto Rico in 1991. ==Legacy==