That the Duchy of Bernstadt at first belonged to the Silesian
Duchy of Oels which had since 1329 been a
fief of the
Bohemian Crown. Upon the death of Duke
Konrad III the Old in 1412, it was split off for his first-born son
Conrad IV the Elder, who at first also ruled over the other Oels territories as a regent for his minor brothers until they formally divided their heritage in 1416. The next year, Konrad IV succeeded
Wenceslaus II of Legnica as
Prince-Bishop of Wrocław. When he died in 1447, Bernstadt fell back to his younger brother Duke
Konrad VII the White of Oels. (1813–1879) After the Oels branch of the
Piast dynasty died out in 1492, the duchy was seized as a reverted fief by King
Vladislaus II of Bohemia. In 1495, he gave the duchies of Bernstadt and Oels to Duke
Henry the Elder of Münsterberg, a son of the late Bohemian king
George of Poděbrady (d. 1471). Due to lack of money, his heir Duke
Charles of Münsterberg and Oels leased Bernstadt in 1511 for four years to the City Council of
Breslau (Wrocław), afterwards he chose it as his residence. After Charles' death in 1536, his sons at first ruled jointly until in 1542 they divided their heritage: Duke
Henry II received the Duchy of Bernstadt, while his younger brother
John ruled the Duchy of Oels. Henry II was a supporter of the
Protestant Reformation, which he introduced in Bernstadt. He had Bernstadt Castle restored during his reign, and expanded the south wing. His son
Henry III, Duke of Bernstadt from 1565 sold Bernstadt along with the castle and some villages in 1574 to the
von Schindel family. Henry III's younger brother Duke
Charles II of Münsterberg-Oels, who was Governor of Silesia at the time, bought it back in 1604. He was succeeded as Duke of Bernstadt by his son
Henry Wenceslaus. When Henry Wenceslaus died in 1637, the duchy was inherited by his younger brother Duke
Charles Frederick I of Münsterberg-Oels. The male line of the House of Poděbrady became extinct when Charles Frederick I died in 1647. The duchies of Bernstadt and Oels again reverted to the Bohemian Crown. Because Charles Frederick's only daughter,
Elizabeth Maria was married with
Silvius I Nimrod, cousin of Duke
Eberhard III of Württemberg, Emperor
Ferdinand III granted Bernstadt and Oels to the
Swabian House of
Württemberg. Silvius, a devoted
Lutheran, made great efforts to redevelop his estates, that had been devastated during the
Thirty Years' War. The poet
Angelus Silesius worked as his physician until 1652. When Silvius died in 1664, his duchies at first were ruled by his widow as regent for her minor sons, who in 1672 divided the inheritance. The Duchy of Bernstadt fell to
Christian Ulrich I, who rebuilt the city after a fire in 1659 and added a third floor to the castle. Upon the death of his elder brother Duke
Silvius II Frederick in 1697, he took over the Duchy of Oels. His nephew
Charles was the last Duke of Bernstadt. He died childless in 1745 and the Duchy fell back to Duke
Charles Christian Erdmann of Württemberg-Oels, who finally re-united the duchies of Bernstadt and Oels under his rule. In 1742, during the
First Silesian War, the Duchy of Bernstadt, like most of Silesia, had been conquered by
Prussia. ==Dukes==