High Quality Content by WIKIPEDIA articles! Vologases I of Parthia (in Persian: Balash or Valakhsh) ruled the Parthian Empire from about 51 to 78. Son of Vonones II by a Greek concubine, he succeeded his father in 51 AD. He gave the kingdom of Media Atropatene to his brother Pacorus II, and occupied Armenia for another brother, Tiridates. This led to a long war with the Roman Empire (54 63), which was ably conducted by the Roman general Corbulo.