Isidore, Bishop of Seville (599-636), Etymologiae, Books I-XX. The text is dedicated to Braulio, Bishop of Saragossa (631-651), the editor of the text, and is preceded (ff. 1r-1v) by two letters between Isidore and Braulio (see Patrologiae Cursus Completus... Series latina, ed. by J.-P. Migne,...