Ghassanids

The Ghassanids, also known as the Jafnids, were an Arab Christian tribal confederation that migrated from South Arabia to the Levant in the 3rd century AD. Founded around 220 CE, they became clients of the Roman Empire, serving as foederati to defend the eastern frontier against Bedouin raids and rival powers. As Roman allies, they frequently fought the Lakhmid kingdom, a rival Arab polity allied with the Sasanian Empire. The Ghassanids played a significant role in Roman–Persian conflicts and converted to Christianity, becoming a prominent Arab Christian group. They reached the height of their power in the 6th century, forming a broad confederation of Arab tribes. The Ghassanids were dissolved around 638 CE following their defeat at the Battle of the Yarmuk and the early Muslim conquests.