E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
or Hark! Alvina weeps, i.e. the wind howls loudly, a Flemish saying. Alvina was the daughter of king, who was cursed by her parents because she married unsuitably. From that day she roamed about the air invisible to the eye of man, but her moans are audible.