The designs and patterns of the Celts, expressed in their metalwork, stonework and jewelry, and continued in the manuscript illumination of Celtic Christianity, are an art form whose legacy has fascinated both Celtic and non-Celtic peoples for centuries. This book adds to the series of practical, step-by-step guides on Celtic design for designers and craftspeople. It studies the intricate dragon and griffin patterns that form the basis of the distinctive style of art that arose after the Viking's invasion of Ireland around 850 AD.