Castalia

Castalia /kəˈsteɪliə/ (Ancient Greek: Κασταλία, romanized: Kastalia), in ancient Greek and Roman mythology, is a young nymph, a daughter of the river-god Achelous, who attracted the god Apollo and who is said to have flung herself into the sacred spring in Delphi when pursued by him. The spring took the name Castalia afterwards.