| Ja'far ibn Abdallah al-Mansur جعفر بن عبد الله المنصور | |||||
| Succession: | Governor of Mosul | ||||
| Reign: | 762 – 764 | ||||
| Reign-Type: | Tenure | ||||
| Birth Date: | c. 742/43 | ||||
| Birth Place: | Humayma, Bilad al-Sham (now Jordan) | ||||
| Death Date: | c. 767 | ||||
| Spouse: | Salsal bint Atta | ||||
| Issue: | Zubaidah[1] Lubabah | ||||
| Issue-Type: | Children | ||||
| Dynasty: | Abbasid | ||||
| Father: | al-Mansur | ||||
| Mother: | Umm Musa Arwa bint Mansur al-Himyari | ||||
| Full Name: | Abu Zubaidah Ja'far ibn Abdallah al-Mansur | ||||
| Religion: | Islam | ||||
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Ja'far ibn Abdallah al-Mansur was the elder son of second Abbasid caliph al-Mansur and elder brother of third Abbasid caliph al-Mahdi. As the elder son of al-Mansur, he was the candidate to the caliphal throne until his premature death.
Ja'far was the son of Abdallah ibn Muhammad al-Abbasi al-Hashimi (the future caliph al-Mansur) in 742/743. When Ja'far was eleven or twelve year old, his father became caliph.
His mother was Arwa. She was al-Mansur's first wife. Arwa also known as Umm Musa, whose lineage went back to the kings of Himyar.[2] Her father was Mansur al-Himyari. She had a brother named Yazid.[3]
Arwa had two sons, Muhammad (future Caliph al-Mahdi) and Ja'far.[2] She died in 764.[2] The two sons of Arwa, Ja'far and Muhammad were regarded as his heirs after the removal of Isa ibn Musa as heir.However, Ja'far died during his father al-Mansur's reign. His brother, Muhammad became sole candidate to the throne.
One of his al-Mansur's concubines was a Kurdish woman. She was the mother of al-Mansur's son Ja'far.[3] Al-Mansur named this son after his elder son.
After Ja'far's death, his father took care of his young children. When his father, al-Mansur died. His brother caliph al-Mahdi took responsibility for his children. Al-Mahdi married his son and heir to Ja'far's daughter Zubaidah.
Ja'far was related to several powerful figures of Abbasid House. He was the older brother of al-Mahdi and he was also maternal grandfather of al-Amin.
Jafar also had several half-siblings, After his mother's death, his father remarried and had children from his wives.
| No. | Abbasids | Relation |
|---|---|---|
| 1 | Al-Saffah | Uncle |
| 2 | Al-Mansur | Father |
| 3 | Al-Mahdi | Brother |
| 4 | Musa al-Hadi | Nephew |
| 5 | Harun al-Rashid | Nephew (Son-in-law) |
| 6 | Al-Amin | Maternal-grandson |
| 7 | Zubaidah | Daughter |
| 8 | Sulayman | Half-brother |
| 9 | Isa ibn al-Mansur | Half-brother |
| 10 | Ya'qub | Half-brother |
| 11 | Jafar ibn al-Mansur | Half-brother |
| 12 | Salih al-Miskin | Half-brother |
| 13 | Qasim | Half-brother |
| 14 | Aliyah | Half-sister |