Ismaïl ibn Mussa

Isma'il ibn Musa was a Muslim lord in the Upper March (, aṯ-Ṯaḡr al-Aʿlà) of al-Andalus, as well as walī of Larida. He hailed from the prominent Muwallad Banu Qasi clan , and was the son of Musa ibn Musa al-Qasawi and his wife Maymuna bint Zahir ibn Furtun, who was Musa's uncle.

For some years, he lived in Córdoba as an hostage-guest of its emir, Muhammad I, being the necessary pledge which guaranteed the Banu Qasi's loyalty to the Emirate of Córdoba. In 850, he was still in Córdoba. Once liberated, he joined the revolt initiated by all his brothers against Muhammad I, to the end of 870, even forming an alliance with the Kingdom of Pamplona and King Alfonso III of Asturias

Isma'il had three sons: Muhammad, who briefly seized Toledo before being assassinated, leaving a son Lubb about whom nothing further is known; Musa, who was killed in battle against Muhammad al-Tawil at Huesca; and Sa'id, who died at Córdoba.