Another source of the spiral is clearly the illuminated manuscripts of the 7th to 9th centuries, particularly Irish manuscripts such as the St. Gall Gospel Book, spread into Europe by the Hiberno-Scottish mission. In these illuminations the use of the spiral has nothing to do with vines or other plant forms. The motif is abstract and mathematical. The style was then picked up in Carolingian art and given a more botanical character. It is in an adaptation of this form that the spiral occurs in the draperies of both sculpture and stained glass windows. Of all the many examples that occur on Romanesque portals, one of the most outstanding is that of the central figure of Christ at La Madeleine, Vezelay.[6]
Another influence from Insular art are engaged and entwined animals, often used to superb effect in capitals (as at Silos) and sometimes on a column itself (as at Moissac). Much of the treatment of paired, confronted and entwined animals in Romanesque decoration has similar Insular origins, as do animals whose bodies tail into purely decorative shapes. (Despite the adoption of Hiberno-Saxon traditions into Romanesque styles in England and on the continent, the influence was primarily one-way. Irish art during this period remained isolated, developing a unique amalgam of native Irish and Viking styles which would be slowly extinguished and replaced by mainstream Romanesque style in the early 13th century following the Anglo-Norman invasion of Ireland.[7])