Page:Political History of Parthia.pdf/58

12 done away with Berenice and her son, thus incurring the enmity of Ptolemy III, Berenice's brother. The Egyptian monarch invaded Seleucid territory and marched victoriously at least as far as Syria and perhaps to the Tigris, though later writers extended his conquests to Bactria and even as far eastward as India. But a revolt in the Delta forced Ptolemy to return home before he could consolidate his position. Sometime in the course of the struggle between Ptolemy and Seleucus, the latter was forced to conclude a peace with his brother which left Antiochus Hierax an autonomous sovereign in Asia Minor. The war with Egypt once ended, Seleucus soon attempted to recover the lost territory; but after some preliminary successes he was completely defeated at Ancyra (Ankara) about 240 by Antiochus and his Galatian allies. For a time it was supposed that Seleucus himself had perished in the fighting, but he escaped in disguise to Antioch.

About 228 Seleucus gathered an army at Babylon and marched eastward. Tiridates retreated