A German Emperor Lothaire II Or III, surnamed the Saxon, born near Celle in 1075, died at Bretten, near Trent, Dec, 3, 1137. His father, Gebhard of Arnsberg, fell fighting against the emperor Henry IV., and Lothaire fought on the same side when 14 years of age. He married Richenza, daughter of the duke of Saxony, and soon became actual ruler of the duchy, though he did not receive the title until the accession of Henry V. He was reconciled for a time to Henry IV., but afterward opposed him again. He aided the accession of Henry V., rebelled against him in 1112, made a humble submission in 1114, but revolted again the same year, and took part in the defeat of Henry at Welfesholz, Feb. 13, 1115. A third rebellion in 1123 was followed by a reconciliation in 1124; and Henry shortly afterward dying, Lothaire was elected to succeed him in 1125, and crowned king of Germany at Aix-la-Chapelle, Sept. 13. The dukes of Swabia and Franconia refused to acknowledge him, but Lothaire made alliance with Pope Innocent II., whose recognition he procured from the assembly at Wiirzburg in 1130, defeated the duke of Swabia in 1132, and was crowned emperor of the Romans by Innocent in Rome, June 4, 1133. He subsequently drove the antipope Anacletus out of Italy, but on his homeward journey from this expedition he was seized with sickness and died.

His reign was marked by the session of the diet of Magdeburg (1135), at which the first regulations of the German empire were framed.