Legality of Cannabis by U.S. Jurisdiction Beithys or Bithyas (Greek: Biθύας) was a king of the Odrysian kingdom of Thrace, who reigned from c. 140 BC to c. 120 BC. He was the son of Cotys IV.[1] References[edit] ^ Thracian Kings, University of Michigan[permanent dead link] See also[edit] List of Thracian tribes