For many, perhaps most, the title Early Celtic Art summons up images of Early Christian stone crosses in Ireland, Scotland, Wales, or Cornwall; of Glendalough, lona or Tintagel; of the Ardagh Chalice or the Monymusk Reliquary; of the great illuminated gospels of Durrow or Lindisfame. But as Stuart Piggott notes, the consummate works of art produced under the aegis of the early churches in Britain or Ireland, in regions Celtic by tradition...