In Greek mythology, Peteus (also Peteos or Petes) was an Athenian royal of the Erechtheid line, son of Orneus and grandson of King Erechtheus. By Polyxene or Mnesimache he fathered Menestheus, who later succeeded Theseus as king of Athens and led the Athenians at Troy. Tradition holds that Peteus fled Attica for Phocis when pursued by King Aegeus.
Adapted from Wikipedia, "Peteus" · CC BY-SA 4.0
I.Family
Peteus was a member of the Athenian royal family as the son of Orneus, son of King Erechtheus. In some versions Petes was originally an Egyptian who later obtained Athenian citizenship.
By Polyxene or Mnesimache, Peteus became the father of Menestheus, who succeeded Theseus and commanded the Athenian contingent at Troy.
II.Mythology
Peteus fled from Attica to Phocis after being pursued by King Aegeus. Most of his companions came from the Attic deme of Stiria, and a Phocian tradition connected the foundation of Stiris with that exile.
Later, to spite Theseus, the Dioscuri brought Menestheus back from exile and made him regent of Athens.