Specific to the Remi Tribe of northwest Gaul (Rheims) was a distinctive group of stone carvings depicting a triple-faced god with shared facial features and luxuriant beards.
These stone carvings are believed to be representative of the Irish Celtic God Lugus. Lugus was identified (appropriated) by the Romans as Mercury and at times Apollo.
Julius Caesar in his De Bello Gallico identified six gods worshipped in Gaul, by the appropriations of interpretatio romana giving the names of their closest Roman equivalents rather than their original Gaulish names.
Julius Caesar said that “Mercury” was the god most revered in Gaul, describing him as patron of trade and commerce, protector of travellers, and the inventor of all the arts.
The Irish/Celtic god Lug (Lugus/Lugh) bore the epithet samildánach (“skilled in all arts”), which prompted the widespread identification of Caesar’s description Mercury as synonymous with Lugus.