The Banshee, from the Irish bean-sídhe ("woman of the síde" or "woman of the fairy mounds") is a female spirit in Irish mythology, usually seen as an omen of death and a messenger from the Otherworld. Her Scottish counterpart is the bean shìth.
One of the Banshee Legends
There was an Irish gentleman who had a beautiful daughter, strong and healthy, and a splendid horsewoman. She always followed the hounds, and her appearance at the hunt attracted unbounded admiration, as no one rode so well or looked so beautiful.
One evening there was a ball after the hunt, and the young girl moved through the dance with the grace of a fairy queen.
But that same night a voice came close to the father's window, as if the face were laid close to the glass, and he heard a mournful lamentation and a cry; and the words rang out on the air--"In three weeks death; in three weeks the grave--dead--dead--dead!"
Three times the voice came, and three times he heard the words; but though it. was bright moonlight, and he looked from the window over all the park, no form was to be seen.
Next day, his daughter showed symptoms of fever, and exactly in three weeks, as the Ban-Sidhe had prophesied, the beautiful girl lay dead.
The night before her death soft music was heard outside the house, though no word was spoken by the spirit-voice, and the family said the form of a woman crouched beneath a tree, with a mantle covering her head, was distinctly visible. But on approaching, the phantom disappeared, though the soft, low music of the lamentation continued till dawn.
Then the angel of death entered the house with soundless feet, and he breathed upon the beautiful face of the young girl, and she rested in the sleep of the dead, beneath the dark shadows of his wings.
Thus the prophecy of the Banshee came true, according to the time foretold by the spirit-voice.