A fuath (Scottish Gaelic: fuath; Scottish Gaelic pronunciation: [fuə]; lit. ‘hatred'; plural: fuathan; phonetic English: vough, vaugh) is a class of malevolent spirits in Scottish Highland folklore and Irish Folklore especially water spirits.
In Sutherland was the so-called Moulin na Vaugha/Fouadh, ‘Mill of the Fuath', haunted by the fuath and her son, the amorphous brollachan. The mill was along a stream off Loch Migdale, and belonged to the Dempster family (Skibo Castle) estate.
A fuath once seen at this mill was a nose-less banshee with yellow hair wearing a green silk dress; in the story of its capture[a] it was tormented into submission by use of steel (awl, and more effectively by a sewing needle), but it turned to a jellyfish-like mass when light was shone on it. A fuath on the estate farm, encountered on a different occasion, had webbed feet.
They sometimes reputedly intermarry with human beings (typically the female), whose offspring have developed a mane and tail.
The term "fuath" has been explained to be a generic class of spirits inhabiting the sea, rivers, fresh water, or sea lochs,[1][2] with several "subspecies" falling under it.[3]
The Scottish Gaelic term fuath has been explained to mean 'hatred' or 'aversion', derived from Old Irish fúath 'hate, likeness'.[3] The term is also glossed to mean 'ghost' or 'spectre'.[4]
An alternative name for this class of monsters is the arrachd or fuath-arrachd.[3]
J. F. Campbell characterized the fuath of Sutherland as a water spirit,[5] but it has been stressed by John Gregorson Campbell that the term designates a spectre or goblin more generally, not necessarily of aqueous nature or habitat.[6]
J. F. Campbell also conflated the traits of the fuath from different accounts in a generalized description of the fuath of Sutherland[b][5] and this has also fallen under criticism by Gregorson.[6][c]
Furthermore, J. F. Campbell ascribed the mane and tail to the fuath, though these traits had evidently developed in the human progeny of the Munroe family, to which there was attached a floating rumour that their ancestor had interbred with a fuath several generations back.[7][d]
While it has been generalized that the fuath of the locality wears green,[5] "golden and silken gear" was worn by the weird woman seen plunging into the River Shin was seen by a (games)keeper of the Charlotte Dempster's family.[9]
A fuath (in this instance spelled "fua") appears in the tale "The King of Ireland's Son". In it, the creature emerges from a body of water and attempts to steal the anvil of Goban Saor, a mythical craftsman. The King of Ireland's Son wrestles with the creature over the course of three nights in order to gain the favor of Goban Saor.
The story of "The Brollachan" (and several of its variant tales) from Sutherland were collected by Charlotte Dempster in 1859, and supplied to J. F. Campbell who printed it. The stories are set in locales within the Dempster family estate (otherwise known as Skibo)[10][11][e] The writer Charlotte was a relative of the Dempsters of the estate (being the granddaughter of Harriet, the illegitimate daughter of the captain).[11]
Below are the supposed "subspecies" of the fuath class, according to certain commentators.[19]
Similarity or equivalence to the bean nighe or Northern Ireland's uisges have been noted.[citation needed]