Which university did C.S. Lewis attend as an undergraduate before teaching at Oxford?

C.S. Lewis attended University College, Oxford, as an undergraduate before becoming an Oxford tutor and fellow.

Lewis entered University College, Oxford, in 1917, but his studies were interrupted by military service during the First World War. After being wounded in France, he returned to Oxford and completed his degree work. He achieved an unusually strong academic record, gaining first-class results in classics, philosophy, and English.

He later taught at Magdalen College, Oxford, from 1925 until 1954. Oxford was central to his intellectual and social life, and his friendships with writers such as J.R.R. Tolkien developed there.

Lewis did not attend Trinity College, Cambridge, as an undergraduate. He moved to Cambridge only in 1954, when he became the first holder of the chair of medieval and Renaissance English at Magdalene College. Thus, University College identifies his undergraduate Oxford connection, while Magdalene College identifies his later Cambridge professorship.