After the death of his father in 1547, George II inherited the
Duchy of Brzeg (which included the towns of
Oława,
Strzelin,
Niemcza,
Kluczbork,
Byczyna,
Wołów and
Ścinawa). In 1548, the early death of his relative
Henry II of Poděbrady, made him the regent of his
Duchy of Oleśnica on behalf of his sons Henry III and Charles II until 1569. Three year later, in 1551, the insubordination of his elder brother
Frederick III of Legnica caused his deposition from the government and the appointing of his infant son
Henry XI of Legnica as the new Duke of Legnica. George II became in the regent of the Duchy on behalf of his nephew, jointly with
Balthasar von Promnitz, until 1556, when Frederick III managed to return to Legnica and retake the power. During all his reign he maintain a good relationship to the Habsburgs (despite being a
Lutheran) and was sent by the Emperor in some diplomatic missions. In 1548, George II took part in the coronation of
Maximilian II in
Prague and
Bratislava, and also used the Bryeg army to maintain the internal order of the Duchy (Police Regulation of 1577). In particular, he dedicated himself to the expansion of his main residence, Brzeg, where he built a magnificent Renaissance palace, which was later destroyed by
Frederick II the Great during the siege of Brzeg. As a Lutheran, he was totally committed with the reforms started by his father. He also built the
Gymnasium (high school) in Brzeg (1564–1569) and, after the fire of Brzeg in 1569, the new City Hall and the towers of the St. Nicholas Church. ==Marriage and issue==