GLAISTIG.
The Banshi is sometimes confounded with the Glaistig, the apparition of a woman, acting as tutelary guardian of the site to which she is attached. Many people use Banshi and Glaistig as convertible terms, and the confusion thence arising extends largely to books. The true Glaistig is a woman of human race, who has been put under enchantments, and to whom a Fairy nature has been given. She wears a green dress, like Fairy women, but her face is wan and grey, whence her name Glaistig, from glas, grey. She differs also in haunting castles and the folds of the cattle, and confining herself to servant’s work.