Aga Khan I – Syed Ḥasan-ʿAlī Shah Aga Khan Maḥallātī (1219-1300/1804-81) was the last imam of the Nizārī Ismaʿilis to reside in Iran and the first to bear the title of Aga Khan. He was born in the vilage of Kahak near Maḥallāt in central Iran, where his father, Shah Khalīlallāh, had transferred the seat…