According to Wikipedia the author suggested the name to be pronounced /ˈkædvɛl/ KAD-vel, although Welsh pronunciation would be [ˈkadvaɨl] (approximately /ˈkædvaɪl/). The name is commonly mispronounced /ˈkædfaɪl/ KAD-fyle in television series.
― Anonymous User 7/20/2022
3
Also found in Literature. Cadfael is the name of a mystery solving Benedictine monk in the novels by British author Ellis Peters (Edith Pargeter).