A son of Poseidon and Ceroessa, the daughter of Zeus and Io. He was believed to be the founder of Byzantium.1 This transplantation of the legend of Io to Byzantium suggests the idea, that colonists from Argos settled there.

The leader of the Megarians, who founded Byzantium in 667 BCE, was likewise called Byzas.2



  1. Stephanus of Byzantium, s.v.; Diodorus Siculus, iv, 49.
  2. Müller. Die Dorier i, 6.9.


  • Smith, William. (1870). Dictionary of Greek and Roman Biography and Mythology. London: Taylor, Walton, and Maberly.

This article incorporates text from Dictionary of Greek and Roman Biography and Mythology (1870) by William Smith, which is in the public domain.