Umm Isa bint Musa al-Hadi

Umm ʿĪsā bint Mūsā al-Hādī (Arabic: أم عيسى بنت موسى الهادي) was an Abbasid dynasty princess, daughter of caliph al-Hadi, niece of caliph Harun al-Rashid and principal wife of al-Ma'mun, the seventh caliph of the Abbasid Caliphate. Umm Isa was the daughter of Al-Hadi (r. 785–786) from one of his concubines.

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