Merovingian script, or "Luxeuil minuscule", is named after an abbey in Western France, the Luxeuil Abbey, founded by the Irish missionary St Columba ca. 590. Caroline minuscule is a calligraphic script developed as a writing standard in Europe so that the Latin alphabet could be easily recognized by the literate class from different regions. It was used in the Holy Roman Empire between approximately 800 and 1200. Codices, classical and Christian texts, and educational material were written in Carolingian minuscule throughout the Carolingian Renaissance. The script developed into blackletter and became obsolete, though its revival in the Italian renaissance forms the basis of more recent scripts. In "Introduction to Manuscript Studies", Clemens and Graham associate the beginning of this text coming from the Abby of Saint-Martin at Tours.