What happened to the Umayyad dynasty in Damascus after it was overthrown in 750?

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Following the overthrow of the Umayyad dynasty in 750 CE, the new Abbasid caliphate sought to eliminate the entire Umayyad clan. Members of the house were systematically hunted down and killed.123

However, one notable survivor, ‘Abd al-Raḥmān I, managed to escape the purge. He fled westward and eventually established himself as a Muslim ruler in Spain in 756, where he founded a new branch of the Umayyad dynasty in Córdoba that persisted for centuries.231