Charles is continuing a long-standing tradition and following in the footsteps of his mother Queen Elizabeth II.

The death of His Highness the Aga Khan, the spiritual leader of the Shia Ismaili Muslims and founder of the Aga Khan Development Network, marks the end of a legacy defined by unparalleled vision, generosity, and philanthropy. Prince Karim Al-Hussaini Aga Khan IV passed away in Lisbon, Portugal, on Tuesday, surrounded by his family. He was 88.

“His Highness Prince Karim Al-Hussaini, Aga Khan IV, 49th hereditary Imam of the Shia Ismaili Muslims and direct descendant of the Prophet Muhammad (peace be upon him), passed away peacefully in Lisbon on 4 February 2025, aged 88, surrounded by his family,” the statement reads in part. According to the Network, his successor will be announced soon.

Hussaini, the title of 'His Highness'.Prince Rahim Al-Hussaini was named as the Aga Khan V following the death of his father Prince Karim Al-Hussaini, the Aga Khan IV, at the age of

King grants new Aga Khan title of ‘His Highness’ in long-standing royal tradition - Charles is continuing a long-standing tradition and following in the footsteps of his mother Queen Elizabeth II