Richeza of Berg
Richeza of Berg (; – 27 September 1125) was Duchess of Bohemia from 1111 to 1117 and again from 1120 until 1125, by her marriage with the Přemyslid duke Vladislav I. She was the daughter of Swabian, Henry I, Count of Berg (d. 1116) and his wife Adelheid of Mochental (d. 1127), a daughter of the Bavarian margrave Diepold II of Vohburg. Adelheid's elder brother, Margrave Diepold III, was a loyal follower of Emperor Henry V; his daughter Adelaide married the Hohenstaufen duke (and later Emperor) Frederick Barbarossa in 1147. Richinza was named after her maternal great-grandmother  Richwara, wife of Duke Berthold I of Zähringen. About 1110/1111 Richeza married Vladislav, who ruled the Duchy of Bohemia since 1109; her sister Sophia married another Přemyslid prince, Otto II the Black, in 1114. The third sister, Salomea of Berg (d. 1144), married the Piast duke of Poland, Bolesław III Wrymouth, in 1115. Richeza and Salomea ensured peace between their Bohemian and Polish husbands. The ducal couple founded the Benedictine monastery of Kladruby in 1115; Richeza also made several donations to Zwiefalten Abbey in her Swabian homelands. Through the intercession of his wife, in 1125 the dying Duke Vladislav I  chose his cousin Prince Otto II the Black as his successor. Only the intervention of his mother, the aged queen dowager Świętosława (Svatava), changed his mind and Vladislav reconciled with his younger brother Soběslav. While Soběslav became duke upon Vladislav's death, the disappointed Richeza had to flee from Bohemia. She wished to retire to Zwiefalten Abbey, however, she died on the way on 27 September 1125. She is buried in Reichenbach Abbey in Bavaria. Her eldest son Vladislav II succeeded to the Prague throne after Duke Soběslav's death in 1140.