The Abgarid dynasty was a dynasty of Nabataean Arab origin. Members of the dynasty, the Abgarids, reigned between 134 BC and 242 AD over Edessa and Osroene in Upper Mesopotamia. Some members of the dynasty bore Iranian names, while others had Arab names, including Abgar itself. J.B. Segal notes that the names ending in "-u" are "undoubtedly Nabatean". The Abgarid dynasts spoke "a form of Aramaic".