Herzogtum Liegnitz
Frederick II, Duke of Legnica () (12 February 1480 – 17 September 1547), also known as the Great of Legnica (), was a Duke of Legnica from 1488 (until 1495 and 1505 with his brothers), of Brzeg from 1521. The most notorious of all Legnica Piast rulers, thanks to his excellent financial politics his Duchy was expanded to the Oder River, and he became the founder of the Duchy of Legnica-Wołów-Brzeg ().