Belenus

Belenus (Gaulish: Belenos, Belinos) is an ancient Celtic healing god whose cult is attested across much of the Celtic-speaking world. While his principal centre of worship lay at Aquileia in northeastern Italy, and the deity is primarily associated with the Noricum region, mentions extend from the Italian peninsula to the British Isles, including Gaul, Aquitania, and Britain.

In Roman sources and inscriptions, Belenus was commonly identified with Apollo through interpretatio romana, especially in contexts associated with healing and therapeutic springs. Ancient authors such as Tertullian and Herodian describe him as a prominent protective and civic deity, notably at Aquileia, where he was regarded as the city's patron god. Archaeological and epigraphic evidence further indicate that his cult was closely connected with medicinal waters, sanctuaries, and, in some regions, oracular functions.