Manley, V.S. (1924). Folk-lore of the Warminster district: a supplement to the History of Warminster and the Official Guide. Collected by V.S. Manley.
Warminster: Coates & Parker. I’m sure I’ve seen a copy but don’t have one now. In a review of Manley’s book in WANHM v43, it says that
“One of the most curious items is ‘The Spirit of Cley Hill,’ a legend which would apparently have died with its narrator, an old woman of 80. The legend records that the guardian spirit of the Bugley folk lived inside the barrow on the top of the hill, and one day hearing water running beneath him he directed its course underground until it came out at Hogs Well. He told the people not to drink it but to use it only for curing weak eyes, and an old woman who disregarded his order and drank the water died that night, and a cow that polluted the water was drowned in the mud. It is in any case a fact that until recently this water has been in great request for bad eyes, 6d. a bottle being paid for it, provided some Ground Ivy was included to be brewed with it. The appearance of the Well Fiend is recorded of Bicker’s Well, in Prince Croft Lane, at Bugley, and under a large oak tree which formerly stood where North Lane meets the Half, below Blue Ball, Bugley, elves lived and might sometimes be seen gambolling by children.
This is a weird kind of place.