Complex sentence: Sulu Sultan Mohammed Esmail Kiram I (1950--1974) was the eldest son of Raja Muda Muwallil Wasit II and the legally recognised successor of the Sultan of Sulu.
Split into simpler sentences: Sulu Sultan Mohammed Esmail Kiram I (1950--1974). He was the eldest son of Raja Muda Muwallil Wasit II and the legally recognised successor of the Sultan of Sulu.