Al-Mundhir III ibn al-Harith

Al-Mundhir ibn al-Ḥārith (المنذر بن الحارث), known in Byzantine sources as Flavios Alamoundaros (Φλάβιος Ἀλαμούνδαρος), was the king of the Ghassanid Arabs from 569 to circa 581. A son of al-Harith ibn Jabalah, he succeeded his father both in the kingship over his tribe and as the chief of the Byzantine Empire's Arab clients and allies in the East, with the rank of patricius. Despite his victories over the rival Persian-backed Lakhmids, throughout Mundhir's reign his relations with Byzantium were lukewarm due to his staunch Miaphysitism. This led to a complete breakdown of the alliance in 572, after Mundhir discovered Byzantine plans to assassinate him. Relations were restored in 575 and Mundhir secured from the Byzantine emperor both recognition of his royal status and a pledge of tolerance towards the Miaphysite Church.

In 580 or 581, Mundhir participated in an unsuccessful campaign against the Persian capital, Ctesiphon, alongside the Byzantine general (and future emperor) Maurice. The failure of the campaign led to a quarrel between the two and Maurice accused Mundhir of treason. Byzantine agents captured Mundhir, who was brought to Constantinople but never faced trial. His arrest provoked an uprising among the Ghassanids under Mundhir's son al-Nu'man VI. When Maurice ascended the throne in 582, Mundhir was exiled to Sicily although, according to one source, he was allowed to return to his homeland after Maurice's overthrow in 602.

Mundhir was the last important Ghassanid ruler; in 584, the Byzantines would break up the Ghassanid federation. A capable and successful military leader, his rule also saw the strengthening of Miaphysitism and a cultural flowering among the Arabs under his rule.