Celtic polytheism

Cernunnos.

Published, edited, annotated (in red) & images added by Kenneth S. Doig

(Wikipedia)
Celtic polytheism, commonly known as Celtic paganism, comprises the religious beliefs and practices adhered to by the Iron-Age peoples of Western Europe now known as the Celts, roughly between 500 BC and 500 AD, spanning the La Tène period and the Roman-era, and in the case of the Insular-Celts the British and Irish Iron-Age.

Celtic polytheism was one of a larger group of Iron Age polytheistic religions of the Indo-European