Aedon

Aëdon (Greek ) is, in Greek mythology, the daughter of Pandareus of Ephesus. According to Homer she was the wife of Zethus, and the mother of Itylus.Envious of Niobe, the wife of her brother Amphion, who had six sons and six daughters, she formed the plan of killing the eldest of Niobe's sons, but by mistake slew her own son Itylus. Zeus relieved her grief by changing her into a nightingale, whose melan­choly tunes are represented by the poet as Aëdon's lamentations about her child.
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[Greek] Wife of Zethus and mother of a daughter Itylus, whom she slew by mistake, whereupon Zeus transformed her into the nightingale who nightly laments her murdered child -OR- a queen of ancient Thebes who plotted to kill a son of her rival Niobe but killed her own son by mistake. Her grief led her to try suicide but she was transformed into the first nightingale by the gods, a bird that still haunts the night with its mournful cry.

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nightingale