Al-Adil I was the fourth Sultan of Egypt and Syria, and brother of Saladin, who founded both the Sultanate of Egypt, and the Ayyubid dynasty. He was known to the Crusaders as Saphadin, a name by which he is still known in the Western world. A gifted and effective administrator and organizer, Al-Adil provided crucial military and civilian support for the great campaigns of Saladin. He was also a capable general and strategist in his own right, and was instrumental in the transformation of the decayed Fatimid Caliphate of Cairo into the Ayyubid Sultanate of Egypt.