The New International Encyclopædia/Irnerius

IRNERIUS, ēr-nē′rĭ-ŭs, or GUARNE′RIUS (c.1050-c.1130). An eminent Italian jurist, founder of the so-called School of Glossators. He was born at Bologna. When quite young he taught in his native city dialectics and rhetoric, but soon devoted himself entirely to the study of the Justinian Code, probably in Rome, where he also seems to have lectured on law. In or about 1084 he returned to Bologna, and there established a new law school. His most important work is the Summa Codicis (first ed. by Fitting, 1894), formerly attributed to Placentin. Consult Fitting, Die Anfänge der Rechtsschule in Bologna (1888).