High Quality Content by WIKIPEDIA articles! Pacorus II of Parthia ruled the Parthian Empire from about 78 to 105. A son of Vonones II and brother of Vologases I, he was given the kingdom of Media Atropatene by the latter after his succession to the throne. After Vologases` death, Pacorus revolted against his brother`s son and successor, Vologases II (c. 78–80), defeating and deposing him.