This is a replacement for GC224MM, which was archived by garfiethecat. In fact, it's still the same cache, so if you've found it before, you'll know what to look for!
The stone is placed on the road leading to Fowey measuring some 7 feet in height and set in a concrete base. The stone was once much closer to Castle Dore and may have been the origin of the association of this site with the story of the tragic love of Tristan and Iseult. There is a Latin inscription on the stone, now much worn, which can be restored with only a little judicial guesswork to read: Drustans hic iacet Cunomori filius. This means: Drustanus lies here, the son of Cunomorus. It has been suggested, plausibly, that the characters referred to are Tristan, the nephew of Mark - Drustan being a recognized variant of the hero's name, and Cunomorus being a Latinisation of Cynvawr. Cynvawr, in turn, is said by the ninth-century author Nennius, who compiled the best historical account of Arthur, to be identified with King Mark.