This interesting book explains all the shields displayed in St Davids Cathedral
''St Davids Cathedral is a treasure house of the visual arts. On display are many examples of the skill of forgotten craftsmen. They created shields, carrying coats of arms, more than eighty of which have survived. From the simple early gold and black coat of arms of the Cathedral and Diocese of St Davids, to the elaborate arms of later patrons of the cathedral, there is a dazzling variety of colours and patterns to be seen in so many parts of the building.''