I am Herne

The evil influence of the fairy glance does not kill, but it throws the object into a death-like trance, in which the real body is carried off to some fairy mansion, while a log of wood, or some ugly, deformed creature is left in its place, clothed with the shadow of the stolen form. Young women, remarkable for beauty, young men, and handsome children, are the chief victims of the fairy stroke. The girls are wedded to fairy chiefs, and the young men to fairy queens; and if the mortal children do not turn out well, they are sent back, and others carried off in their place. It is sometimes possible, by the spells of a powerful fairy-man, to bring back a living being from Fairy-land. But they are never quite the same after. They have always a spirit-look, especially if they have listened to the fairy music. For the fairy music is soft and low and plaintive, with a fatal charm for mortal ears.

Lady Francesca Speranza Wilde
Ancient Legends, Mystic Charms, and Superstitions of Ireland

where they work much evil

October 10, 2017

…all the Irish, believe that the fairies are the fallen angels who were cast down by the Lord God out of heaven for their sinful pride. And some fell into the sea, and some on the dry land, and some fell deep down into hell, and the devil gives to these knowledge and power, and sends them on earth where they work much evil. But the fairies of the earth and the sea are mostly gentle and beautiful creatures, who will do no harm if they are let alone, and allowed to dance on the fairy raths in the moonlight to their own sweet music, undisturbed by the presence of mortals…

Lady Wilde
Ancient Legends, Mystic Charms and Superstitions of Ireland