Continental Celtic and British god. This relatively obscure Gaulish god may have been a local divinity (GENIUS LOCI) worshiped in a TREE, for his name seems to derive from two words for “great tree” or “giant tree” (ollo-vidio). His special region was the islands off the south of France called the Antibes, where he was honored by the tribe called the Narbonenses. Olloudios was also found in Britain, where in Gloucester he was depicted as having huge ears that stuck out from his head like wings.
Source: Ross, Anne. Pagan Celtic Britain: Studies in Iconography and Tradition. London: Routledge & Kegan Paul, 1967, pp. 37, 172.