Ha'drian, (76-138) fourteenth Roman emperor. His father, who was a cousin to the emperor Trajan, died when he was ten years old and left him under the charge of his illustrious kinsman. He married Sabina. Trajan's grand niece, accompanied the emperor on his expeditions, filled the highest offices and, on the death of Trajan, assumed the government as his adopted son (117). He made peace with the Parthians, renouncing all conquests east of the Euphrates, and bought off a war with the Roxolani by the payment of a sum of money. From the year 121 he spent most of his time visiting the various provinces of the Empire. He traveled into Asia and Africa and lived in Athens for three years. In 131 he promulgated a fixed code of laws, which formed an important epoch in the development of Roman law. In 132 the Jews revolted, and for four years they carried on a bloody war, the only notable one of his reign.