Fourwinds, I spotted this in 'Folklore' 90/1/p69 in an article by LV Grinsell:
Snivelling Corner (formerly in Berkshire [now Oxfordshire]). An early reference occurs in a letter dated September 1829: 'Snivelling Stone, about two miles and a half from the cromlech known as Wayland Smith's Cave, in Berkshire, is a large stone, which it is said that Wayland, having ordered his attendant dwarf to go on an errand, and observing the boy to go reluctantly, kicked after him. It just caught his heel, and from the tears which ensued, it derived its traditionary appellation.'
R H D Barham: 'Life and Letters of Rev. R H Barham, author of the Ingoldsby Legends' 1880, p101. (Reference from Dr W Russell, Department of Sociology, University of Reading).
Maybe it's not accurate. But if it's saying the stone's two and a half miles from Wayland's Smithy, can it be where we were thinking it was??