Alp Arslan

Muhammad bin Da'ud (1029 – December 15, 1072) was the second sultan of the dynasty of Seljuk Turks, in Persia, and great-grandson of Seljuk, the founder of the dynasty. He assumed the name of Muhammed when he embraced Islam, and due to his military prowess, personal valor, and fighting skills he obtained the surname Alp Arslan, which signifies "a valiant lion."