“Local folklore attributes Grubstones ‘to have been a Council or Moot Assembly-place’ in ages past (Collyer and Turner 1885). Considerable evidence points to the Freemasons convening here in medieval times and we are certain from historical records that members of the legendary Grand Lodge of All England (said to be ordained in the tenth century by King Athelstan) met here, or at the adjacent Great Skirtful of Stones giant cairn 400 yards east.”
‘Circles, Standing Stones and Legendary Rocks of West Yorkshire’ Paul Bennett