cover from Molaise Gospels, taken from an illustration in the book Historic ornament : treatise on decorative art and architectural ornament, vol.2 P. 176, by James Ward (1851 - 1924)
<a href="//commons.wikimedia.org/w/index.php?title=James_Ward_(Irish_artist)&amp;action=edit&amp;redlink=1" class="new" title="James Ward (Irish artist) (page does not exist)">James Ward</a> (1851 - 1924)
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book:  Historic ornament : treatise on decorative art and architectural ornament, vol.2, from Internet Archive <a rel="nofollow" class="external autonumber" href="https://archive.org/details/historicornament02ward">[1]</a>