WITCHES, FAIRY DOCTORS
Witches and fairy doctors receive their power from opposite dynasties; the witch from evil spirits and her own malignant will; the fairy doctor from the fairies,, and a something--a temperament--that is born with him or her. The first is always feared and hated. The second is gone to for advice, and is never worse than mischievous. The most celebrated fairy doctors are sometimes people the fairies loved and carried away, and kept with them for seven years; not that those the fairies' love are always carried off--they may merely grow silent and strange, and take to lonely wanderings in the "gentle" places. Such will, in after-times, be great poets or musicians, or fairy doctors; they must not be confused with those who have a Lianhaun shee [leannán-sidhe], for the Lianhaun shee lives upon the vitals of its chosen, and they waste and die. She is of the dreadful solitary fairies. To her have belonged the greatest of the Irish poets, from Oisin down to the last century.
Those we speak of have for their friends the trooping fairies--the gay and sociable populace of raths and caves. Great is their knowledge of herbs and spells. These doctors, when the butter will not come on the milk, or the milk will not come from the cow, will be sent for to find out if the cause be in the course of common nature or if there has been witchcraft. Perhaps some old hag in the shape of a hare has been milking the cattle. Perhaps some user of "the dead hand" has drawn away the butter to her own chum. Whatever it be, there is the counter-charm. They will give advice, too, in cases of suspected changelings, and prescribe for the "fairy blast" (when the fairy strikes anyone a tumour rises, or they become paralysed. This is called a "fairy blast" or a "fairy stroke").
"'Though well off, he never, even in his youth, thought of taking a wife; nor was he ever known to love a woman. He stands quite apart from life, and by this means holds his power over the mysteries. No money will tempt him to impart his knowledge to another, for if he did he would be struck dead--so he believes. He would not touch a hazel stick, but carries an ash wand, which he holds in his hands when he prays, laid across his knees; and the whole of his life is devoted to works of grace and charity, and though now an old man, he has never had a day's sickness. No one has ever seen him in a rage, nor heard an angry word from his lips but once, and then being under great irritation, he recited the Lord's Prayer backwards as an imprecation on his enemy. Before his death he will reveal the mystery of his power, but not till the hand of death is on him for certain.'" When he does reveal it, we may be sure it will be to one person only--his successor. There are several such doctors in County Sligo, really well up in herbal medicine by all accounts, and my friends find them in their own counties.