Abū al-ʿAbbās Aḥmad ibn Muḥammad ibn Muḥammad, better known by his regnal title al-Mustaʿīn was the Abbasid caliph from 862 to 866, during the "Anarchy at Samarra". After the death of previous Caliph, al-Muntasir, the Turkic military leaders held... Wikipedia
Born: 836 AD, Abbasid Samarra
Died: October 17, 866 AD (age 30 years), Baghdad, Iraq
Parents: al-Mu'tasim and Muhammad ibn al-Mu'tasim
Cousins: Al-Abbas ibn al-Ma'mun, Al-Natiq bi-l-Haqq, Umm Habib bint al-Ma'mun, and more
Great-grandparents: Harun al-Rashid, al-Mahdi, Al-Khayzuran, and more