Diviciacus (Aedui)
Diviciacus or Divitiacus of the Aedui is the only druid from antiquity whose existence is attested by name. The name may mean "avenger." He should not be confused with his namesake Diviciacus, king of the Suessiones.
His date of birth is not known, but he was an adult during the late 60s BC, at which time he was described by Julius Caesar as a "senator" of the Aedui. In Caesar's The Gallic War the word "senator" is used to refer to Gallic aristocrats who took part in their clans' decision-making. He supported the Aedui's preexisting alliance with Rome.
Read more about Diviciacus (Aedui): Visit To Rome, Alliance With Caesar, Social Positions