“Luath’s Stone on the hillside some distance north of Whitehouse Station on the Alford railway, is reputed to mark the site of the death of “Luath,” said to be a son of Macbeth.
Some doubt must attach to the tradition, which is repeated in connection with another site a good many miles away; even the existence of a son so-called is doubtful. The colour of the stone suggests that the present name may have been derived from the Gaelic word liath, meaning “grey”—the “Grey Stone” and nothing more”.
Source
Folklore of the Aberdeen Stone Circles and Standing Stones by James Ritchie
Proceedings of The Society of Antiquities of Scotland. Vol LX.20
May 10 1926