IRNERIUS (Hirnerius, Hyrnerius, lernerius, Gernerius, Guarnerius, Warnerius, Wernerius, Yrnerius), Italian jurist, somelimes referred to as " lucerna juris." He taught the " free arts " at Bologna, his native city, during the earlier decades of the 12th century. Of his personal history nothing is known, except that it was at the inslance of the countess Matilda, Hildebrand's friend, who died in 1115, thai he directed his attention and that of his studenls lo the Institutes and Code of Juslinian; that after 1116 he appears to have held some office under the emperor Henry V.; and thai he died, perhaps during the reign of the emperor Lolhair II., but certainly before 1140. He was the first of the Glossators (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. His Formularium tabellionum (a directory for notaries) and Quaestiones (a book of decisions) are no longer extanl. (See ROMAN LAW.)
See Savigny, Gesch. d. ront. Rechts im Mittelalter, Hi. 83 ; Vecchio, Notizie di Irnerio e delta sua scuola (Pisa, 1869) ; Ficker, Forsch. z. Reichs- u. Rechtsgesch. Italiens, vol. iii. (Innsbruck, 1870); and Fitting, Die Anfdnge der Rechtsschtde zu Bologna (Berlin, 1888).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)