or The Conqueror for the Cause of God, also called Alahmar, or the Red Man, the surname of Mohammed-ben-Yusuf-ben-Nasr, the first Moorish sovereign of Granada. He was born in the province of Jaen in Spain, A.D. 1195, and died in 1273, after a reign of forty-two years. On the decline of the empire of the Almohades in Spain, the governors of the several provinces declared themselves independent. Mohammed, following the general example, caused himself to be proclaimed sultan of Mahometan Spain; and after subduing various towns, established himself at Granada as the capital of his dominions. He was long the ally, and afterwards the vassal of the king of Castile. He encouraged learning, arts, and manufactures among his subjects; Granada was by him adorned as became the capital of a powerful sovereign; and in his reign the famous palace of the Alhambra was begun. The dynasty of which he was the founder reigned in Granada for two centuries, and ended with Boabdil, who was dethroned by Ferdinand and Isabella in 1492.