Can someone tell me some facts about the Druids ?

A druid was a member of the priestly and learned cl in the ancient Celtic societies of Western Europe, Britain and Ireland. They were suppressed by the Roman government and disappeared from the written record by the second century CE. Druids combined the duties of priest, judge, scholar, and teacher.[1] Little contemporary evidence for them exists, and thus little can be said of them with urance, but they continued to feature prominently in later Irish myth and literature.[2]