Main (Thompson) Library location: South wing -- Sixth window. Jean Barril (c.14-- – c. 15--) spent the majority of his documented career in Toulouse, France working as a writer, merchant, and printer. He is first documented as the author of a book entitled A la requeste de treshaulte et puissante princesse madame Susanne de Bourbon, printed once in Lyon in 1520. In 1531, Barril produced his first printed work, Police subsidiare on the city of Lyon, written by Jean de Vauzelles. In the next year, it appears that he printed a book for or alongside Jacques Colomiès, the self-proclaimed "master printer" of Toulouse. The final book Barril printed – out of five in total – was one he wrote himself – A tresillustre et puissante princesse et dame madame Margueritte de France royne de Navarre, printed in 1535. For his printer's mark, Barril inscribed his initials, I.B., into an elliptical shape that comes to a point at the base. This shape, surmounted by a patriarchal cross, is a unique modification of the traditional orb-and-cross motif used widely among European printers.