Anwyl was born in Chester, England, and educated at the King's School, Chester. He went on to study at Oriel College, Oxford, and Mansfield College, Oxford. In 1892 he became Professor of Welsh at the University of Wales, Aberystwyth, and was later appointed Professor of Comparative Philology. He was knighted in July 1911. In 1913, he became Principal of the newly founded. Monmouthshire Training College at Caerleon.
- Welsh Accidence (1898)
- Welsh Syntax (1899)
- Celtic Religion in Pre-Christian Times (1906)
- The London Gazette: . 1 August 1911.