Al-Harith Ibn Jabalah
Al-Ḥārith ibn Jabalah (Arabic: الحارث بن جبلة), Arethas ( Ἀρέθας) in Greek sources and Khalid ibn Jabalah in later Islamic sources, was a king of the Ghassanids, a pre-Islamic Arab people who lived on the eastern frontier of the Byzantine Empire. The fifth Ghassanid ruler of that name, he reigned from circa 528 to 569 and played a major role in the wars with Persia and the affairs of the Monophysite Syriac Church. For his services to Byzantium, he was made a patricius and a gloriosissimus.
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