As a child, on 24 May 1974, His Majesty Muedzul Lail Tan Kiram was crowned as Raja Muda (Crown Prince, heir to the Throne) of the Sultanate of Sulu. It was on the same day, when His Majesty´s father was crowned as the Sultan of Sulu. This acts were supported by H.E. Ferdinand Marcos, President of Republic of Philippines. In official Memo Order No. 427 issued at that time, it was stated, that “The Government has always recognised the Sultanate of Sulu as the legitimate claimant to the historical territories of the Republic of Philippines”. In that way, Sultan Moh. Mahakuttah A. Kiram and (then) Crown Prince Muedzul Lail Tan Kiram became last bearers of these functions, officially recognized by the Government of Republic of Philippines.
After the passing of the late Sultan Moh. Mahakuttah A. Kiram of Sulu and Nort Borneo, His Majesty Muedzul Lail Tan Kiram became Head of The Royal House of Sulu and North Borneo (Kiram Dynasty), on 16 February 1986.
His Majesty Muedzul Lail Tan Kiram studied at Universidad de Zamboanga (Zamboanga City, Philippines), becoming Bachelor of Arts. His Majesty continued his higher studies in Lahore (Pakistan), between 1995 and 1996.
In 2011, His Majesty used his sovereign rights of legal “Fons Honorum” (Fount of Honour), by founding The Royal and Hashemite Order of the Pearl of Sulu, and becoming Grand Sayyid (Grand Master) of this distinguished Order.
His Majesty Muedzul Lail Tan Kiram was crowned as the 35th legitimate Sultan of Sulu and North Borneo, on 16 September 2012. The Coronation took place in Mainbung, Sulu, in presence of dignitaries of the Sultanate, foreign guests, as well as a large number of the Tausug people of Sulu.
In marriage with Her Royal Majesty Ampun Babai Mellany S. Kiram, His Royal Majesty Ampun Sultan Hadji Muedzul Lail Tan Kiram has seven children: HRH Raja Muda (Crown Prince) Moh. Ehsan S. Kiram, HRH Datu Nizamuddin S. Kiram, HRH Dayang-Dayang Rahela S. Kiram, HRH Datu Jihad S. Kiram, HRH Datu Mujahid S. Kiram, HRH Dayang-Dayang Redha S. Kiram and HRH Datu Mahakuttah S. Kiram.
His Majesty is also member of highest ranks of distinguished foreign Orders of Chivalry, such as: Grand Cross of The Royal Order of the Drum of Rwanda, Grand Cross of The Order of the Eagle of Georgia and the Seamless Tunic of Our Lord Jesus Christ of Georgia, Grand Cordon of The Order of the Ethiopian Lion and Royal Order of the Engabu of The Kingdom of Bunyoro-Kitara.