The Cult
The honest starting point is that no cult of the Welsh Beli is attested: no British altar, votive, or sanctuary names him, and the Mabinogion treats him purely as the dead king of a genealogy. If the standard comparison holds — that Welsh Beli Mawr and the continental Belenus are one Celtic name — then his cult is well documented east of the mountains. Some fifty inscriptions to Belenus survive, concentrated in the eastern Alps and the upper Adriatic: Aquileia, Iulium Carnicum in the Carnic Alps, and the Norican hill-country, where Tertullian (c. 200 CE) makes Belenus the national god of Noricum and the ancients equated him with Apollo. Herodian adds the one narrative: during Maximinus Thrax's siege of Aquileia in 238, oracles promised the city Belenus's protection, and soldiers reported seeing the god fighting above the walls. Healing springs bore his name — a Fons Beleni is attested — and dedications style him Augustus, the official, imperial god. Modern Druid orders that honor Belenos are revivals, not survivals; but the stones they invoke are real, and they are not Welsh.


