Which Oxford college did J.R.R. Tolkien teach at when he held his first Oxford professorship?

J.R.R. Tolkien taught at Pembroke College when he held his first Oxford professorship. From 1925 to 1945, he was Rawlinson and Bosworth Professor of Anglo-Saxon and a fellow of Pembroke.

During these years Tolkien wrote or developed several works connected with his legendarium. He also wrote The Hobbit, which was published in 1937, while living and working in Oxford. His academic duties included teaching Old English and studying the language and literature of early medieval England.

Tolkien later moved to Merton College when he became Merton Professor of English Language and Literature in 1945. This distinction causes a frequent mix-up: both colleges were important in his Oxford career, but Pembroke was the college associated with his first Oxford professorship. He remained connected with Oxford for most of his professional life.