The Aga Khan reference article from the English Wikipedia on 24-Apr-2004
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Aga Khan

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Aga Khan is the title of the spiritual leader of the Ismaili branch of Islam. The first imam to bear the title of Aga Khan was Aga Hasan Ali Shah in the mid 19th century.

List of those who have held the title of Aga Khan

  1. Aga Khan I = Aga Hasan Ali Shah = HH Shah Hasan Ali Shah Mehalatee Aga Khan I (1800-1881), 46th Imam (1817-1881)
  2. Aga Khan II = HH Ali Shah Aga Khan II (about 1830 - 1885), 47th Imam (1881-1885)
  3. Aga Khan III = HRH Prince Sultan Mohammed, (1877-1957), 48th Imam (1885-1957)
  4. Aga Khan IV = Karim Aga Khan = HH Prince Aga Khan IV = Prince Karim El Husseni (b. 1936), 49th Imam of the Ismaelis (from 1957)