Polibetes, Polipliters, Poliplites, Polydetes, Polydeuces
The duke of Bithynia or Mede (Media) who was subservient to the Roman Procurator Lucius, and was called upon to join Lucius in the war against Arthur.
He led a force of soldiers at the battle of Soissons, where he was killed by Arthur himself.
In the Vulgate he is the King of Mede.
See also
Boccus | The Legend of King Arthur
Sources
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138
Roman de Brut | Wace, c. 1155
Brut | Layamon, late 12th century to mid-13th century
Vulgate Merlin | 1220-1235