Vologases I ( Walagash) was the King of Kings of the Parthian Empire from 51 to 78. He was the son and successor of Vonones II (r. 51). He was succeeded by his younger son Pacorus II, who continued his policies. Name Vologases is the Greek and Latin form of the Parthian Walagaš. The name is also attested in New Persian as Balāsh and Middle Persian as Wardākhsh (also spelled Walākhsh). The etymology of the name is unclear, although Ferdinand Justi proposes that Walagaš, the first form of the name, is a compound of words "strength" (varəda), and "handsome" (gaš or geš in Modern Persian). Background Vologases was a son of Vonones II, a Parthian prince who ruled the northern Iranian kingdom of Media Atropatene, and possibly subsequently the whole Parthian Empire for a few months. Vologases' mother was a Greek concubine of the Parthian harem. The name of the Arsacid branch established by Vologases I has been coined by the modern historian Marek Jan Olbrycht as the "Vologasids" or the "House of Vologases I", which ruled the Parthian Empire from 51 till its fall in 224. Reign

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Vologases I ( Walagash) was the King of Kings of the Parthian Empire from 51 to 78. He was the son and successor of Vonones II (r. 51). He was succeeded by his younger son Pacorus II, who continued his policies.