[1][2] Members of the dynasty, the Abgarids, reigned between 134 BC and 242 AD over Edessa and Osroene in Upper Mesopotamia.
[3] J.B. Segal notes that the names ending in "-u" are "undoubtedly Nabatean".
[3] Following the Battle of Carrhae (53 BC), members of the dynasty pursued a broadly pro-Parthian policy for about two centuries.
[3] During Caracalla's reign (r. 198–217), most likely in 214, Abgar IX Severus was deposed and Osroene was incorporated as a Roman province (colonia).
[3] Abgar X Frahad, the last nominal Abgarid ruler, settled in Rome together with his wife.