Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Arvirargus (or Arviragus) was a legendary, and possibly historical, British king of the 1st century AD. A shadowy historical Arviragus is known only from a cryptic reference in a satirical poem by Juvenal, in which a giant turbot presented to the Roman emperor Domitian (AD 81 â€“ 96) is said to be an omen that you will capture some king, or Arviragus will fall from his British chariot-pole". Geoffrey of Monmouth''s Historia Regum Britanniae (1136) presents a legendary Arviragus who is contemporary with the emperor Claudius (AD 41-54). However, Geoffrey''s work is highly romanticized and contains little trustworthy historical fact, rendering his account of Arvirargus suspect. According to Geoffrey, Arvirargus is a son of the former king Kimbelinus. He succeeds to the throne of Britain after his elder brother, Guiderius, dies fighting the invading Romans under Claudius. Arviragus puts on his brother''s armour and leads the army of the Britons against the Romans. "