The Arsacid dynasty, called the Arshakuni in Armenian, ruled the Kingdom of Armenia from 12 to 428 AD. The dynasty, a branch of the Arsacid dynasty of Parthia, reigned intermittently throughout the chaotic years following the fall of the Artaxiad dynasty until 62, when Tiridates I, brother of Parthian King Vologases I, secured Arsacid rule in Armenia as a client-king of the Roman Empire. However, he did not succeed in establishing his line on the throne, and various princes of different Arsacid lineages ruled until the accession of Vologases II, who succeeded in establishing his own line on the Armenian throne, which ruled the kingdom until the Sasanian Empire abolished it in 428.