Silesian Wars
When the Poděbrad dynasty became extinct in 1647, the Habsburg emperor Ferdinand III, King of Bohemia, enfeoffed Silvius I Nimrod of Württemberg with Oleśnica, who had married the daughter of the last Podiěbrad duke. The duchy remained under the Crown of Bohemia until in 1742 it was conquered by the Kingdom of Prussia in the course of the Silesian Wars.