Cadmus

Cadmus, in Greek mythology, son of Agenor and Telephassa, and brother of Europa. When Zeus carried off Europa Agenor sent his sons to look for her, but in vain; and Cadmus with Telephassa settled in Thrace, where the latter died. Then Cadmus went to Delphi and was told by an oracle to follow a cow and build a town where the cow should sink down. Cadmus followed the cow to Boeotia and built Thebes. Wishing to sacrifice the cow to Athene, he sent for water, and a dragon killed his messengers. Cadmus killed the dragon, and by Athene's advice sowed its teeth, which sprang up armed men, who fought and killed each other, all but five, who became the ancestors of the Thebans. Later, Cadmus with his wife Harmonia, left Thebes, according to one account, and led a hostile expedition of Encheleans against it, by which he was made king. Both were finally changed to dragons, and taken up to heaven.