IRNERIUS, Italian jurist, sometimes referred to as "lucerna iuris." He taught the "free arts" at Bologna, his native city, dur ing the earlier decades of the 12th century. Of his personal history little is known, except that he died, perhaps during the reign of the emperor Lothair II., but certainly before 1140. He
was the first of the GlQssators (see GLoss), and according to ancient opinion (which, however, has been much controverted) was the author of the epitome of the Novellae of Justinian, called the Authentica, arranged according to the titles of the Code. (See ROMAN LAW.)