ABBAS

The son of 'Abdu l-Muttalib, and consequently the paternal uncle of Muhammad. The, most celebrated of the "Companions," and the founder of the Abbaside dynasty, which held the Khalifate for a period of 509 years, namely, from A.D. 749 to 1258. He died in A.H. 82. His son Ibn-'Abbas was also a celebrated authority on Islamic traditions and law. [IBN ABBAS, ABBASIDES]