Redbeard of the Mediterranean: The Rise of Hayreddin Barbarossa

In the 16th century, if you were a Spanish or Portuguese captain sailing the Mediterranean, the sea itself was your enemy. To the west, a Moroccan ruler named Sayyida al Hurra controlled the Atlantic approaches with the precision of a chess master. To the east, a red-bearded Ottoman admiral named Hayreddin Barbarossa owned everything else. Between them, they had divided an ocean. Spain and Portugal had built empires. These two made the Mediterranean a battlefield.

Barbarossa was born Hızır Reis on the Aegean island of Lesbos, likely in the 1470s, the younger brother, the quieter one. His older brother, Oruç Reis, was the fire. Together, they became corsairs, raiding Spanish, Italian, and Portuguese ships across the western Mediterranean with a ruthlessness that was also, unmistakably, political. Spain had just completed the Reconquista, expelling hundreds of thousands of Muslims and Jews from the only homeland they had ever known. The Reis brothers were not just pirates, they were a reckoning. In 1516, they seized Algiers and made it theirs, a corsair city, a fortress of resistance, and a splinter buried deep in Spain’s side. Then, in 1518, Oruç was killed in battle near Tlemcen.

Hızır was alone. He had a city, a fleet, and enemies in every direction. Most men would have run. Instead, he looked east, toward Constantinople, toward Suleiman the Magnificent, and made the boldest bet of his life. He offered the Sultan everything: Algiers, his ships, his loyalty. Suleiman said yes. In return, Hızır gained Ottoman troops, imperial legitimacy, and eventually the title of Kapudan Pasha, Grand Admiral of the most powerful navy in the world. He also inherited a name. Europe had first called Oruç “Barbarossa,” Redbeard, for his auburn beard. When Hızır inherited the legend, the name came with it. It fit. 

What followed was a decade of Ottoman dominance unlike anything the Mediterranean had seen. Barbarossa raided the Italian coast, rescued Moorish refugees fleeing Spain, and systematically dismantled the idea that European powers controlled these waters. Then came September 1538, the Battle of Preveza. Pope Paul III assembled the Holy League, Spanish, Venetian, and Genoese forces under the famed admiral Andrea Doria, determined to crush the Ottoman threat once and for all. Barbarossa crushed that dream first. His victory at Preveza was not just military, it was a declaration. The Mediterranean belonged to the Ottomans now, and everyone knew it.

Historians do not place Barbarossa beside Sayyida al Hurra simply for symmetry. They were part of the same resistance. She controlled the western gateway near Gibraltar. He ruled the central sea lanes from Algiers to Constantinople. Together, they made Spanish and Portuguese expansion a constant, expensive war fought from both ends of the sea. One ruled the western gate. The other held the center. Between them, Europe sailed carefully. Barbarossa died peacefully in Constantinople in 1546. For a man who lived the way he did, that almost feels like the final act of piracy. The sea he left behind was not the sea he inherited - but long after his ships were gone, the Mediterranean still remembered who ruled it.