In full, Almarhum Al-Sultan Yahya Petra ibni Almarhum Sultan Ibrahim Petra (December 10, 1917- March 29, 1979) was the sixth Yang di-Pertuan Agong (roughly equivalent to King) of Malaysia from September 21, 1975 to his death, and twelfth (by some reckoning tenth) Sultan of modern Kelantan (1960-1979). Wikipedia
The definitive Wikipedia entry for Yahya Petra. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Yahya_Petra
