Bolesław III

Bolesław III, called The Wry-Mouthed (1086-1138), king of Poland (1102-1138), nephew of Bolesław II. He was at first challenged by his brother Zbigniew, who acknowledged him as king in 1104. Bolesław successfully defended Silesia against an invasion by Holy Roman Emperor Henry V, whom he defeated at Głogów and Wrocław (Breslau) in 1109. His most lasting achievement was the reconquest of Pomerania on the Baltic coast, which had broken away from Polish control, and the Christianization of its people. In 1135, Henry V's successor, Lothair II, granted him possession of Pomerania as a fief of the Holy Roman Empire.