Barbarossa, Horuk, and Khair-ed-Din. The name of two brothers of Roumelian extraction whose naval exploits against the Christian powers in the Mediterranean were famous in the early 16th century. After gaining possession of Algiers, Horuk was slain in battle against the Spaniards. Khair-ed-Din, entering the service of the Turkish Sultan, defeated the Spaniards and afterwards the Genoese fleet, ravaged the coasts of Italy, took Tunis, and in 1538 decisively defeated the combined fleets of the Pope, Venice, and Spain. Died 1546.