 The monks of Glastonbury used to claim that during the sack of Canterbury by the Danes in 1012 , Dunstan 's body had been carried for safety to their abbey . This story was disproved by Archbishop William Warham , who opened the tomb at Canterbury in 1508 . They found Dunstan 's relics still to be there . Within a century , however , his shrine was destroyed during the English Reformation . 
