Hasan al-Askari
Hasan al-Askari (Arabic: الحَسَن بْن عَلِيّ ٱلْعَسْكَرِيّ, romanized: al-Ḥasan ibn ʿAlī al-ʿAskarī; c. 844 – c. 874) was a descendant of the Islamic prophet Muhammad. He is regarded as the eleventh of the Twelve Imams, succeeding his father, Ali al-Hadi.