Harmonia was the goddess of harmony and concord in Greek mythology. She was the daughter of the god Ares and the goddess Aphrodite, and she was married to the Theban prince Cadmus. With her husband, she was the mother of Agave, Semele, Illyrius, Polydorus, Ino, and Autonoë. Illyrius was their youngest son.
According to legend, Harmonia was given a necklace by the gods that brought misfortune to anyone who possessed it. In some accounts the necklace came from either Hephaestus or Europa. However, there are some accounts that claim that the necklace of Harmonia came from either Athena or Aphrodite. In any case, the necklace was passed down through the generations of Cadmus’ family and brought them nothing but tragedy.
Harmonia and her husband Cadmus eventually left Thebes and traveled to Illyria, where they were transformed into serpents and lived happily ever after. She was also sometimes associated with the goddess Aphrodite, and was considered a symbol of beauty, love, and peace.