The Cloister of Ambrius in Geoffrey of Monmouth's Historia Regum Britanniae is a monastery of 300 monks on Mount Ambrius close to Salisbury in which the Saxon Hengist and his followers betayed and slaughtered the British leaders. Bishop Eldadus buried the bodies in a cemetery there. Later Uther Pendragon and Merlin bring the stones of the Giant's Dance from Ireland and set them up as monument to the slain. The cloister had been founded by one Ambrius many years earlier.