According to John Barnatt in his book
‘Prehistoric Cornwall’ 1982
IBSN 0-85500-129-1
“This site was first noted in 1921 by Crawford, from information by Breton, as a ‘circle stone’.
It is likely to be either a group of natural boulders or the pound nearby.”
I think the Crawford that Barnatt refers to is- Osbert Guy Stanhope Crawford 1886-1957
O.G.S. Crawford was a pioneering aerial photographer and British archaeologist.
His publication Wessex from the Air (1928) was his first collection of aerial photographs of archaeological sites
Not sure if this helps much.
Barnatt also gives a slighty differrent
grid ref of SX24757755