There was formerly a place also called the Giant’s Chair near the Beacon in Sancreed, a cromlech, the covering-stone of which had slipped down, and so formed a sort of wide seat.
From Rambles in Western Cornwall by J O Halliwell (1861).
A fine Cromlech near the Beacon, whose appearance, in consequence of the upper stone having slipped off at its back, entitled it in the opinion of the country people to the name of the “Giant’s chair” has been broken up within the last five years.
in the Royal Cornwall Gazette, 22nd December 1843.