, France.]]In Celtic polytheism, a druid was a member of the priestly and learned class in the pre-Christian, ancient Celtic societies. These societies existed through much of Western Europe, Britain and Ireland, until they were supplanted by the Roman government and, later, the arrival of Christianity. Druids were part of the cultures of the tribal peoples who were called "Keltoi" (??????) or "Keltai" (??????) and "Galatai" (???????) by the Greeks and "Celtae" and "Galli" by the Romans. These words evolved into the modern English terms "Celtic", "Gaulish", and "Galatian". In the communities they served, druids combined the duties of priest, arbitrator, healer, scholar, and magistrate. Both men and women served as druids.
The earliest records of the name druidae (???????) is found on the works of Greek writers such as Sotion of Alexandria, who was cited by Diogenes Laertius in the third century CE.Diogenes Laertius, Lives and Opinions of Eminent Philosophers Introduction, Ch