ʿAbbāsa
From Infogalactic: the planetary knowledge core
ʿAbbāsa was the sister of the caliph Harun al-Rashid and Al-Hadi, and daughter of the caliph Al-Mahdi.[1][2] On the instruction of Harun al-Rashid she had a formal marriage with Ja'far ibn Yahya, a member of the influential Barmakids family and vizier to the caliph.[1][2] Horovitz says that her name is connected with the fall of the Barmakids.[1]
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