William the Brave (April 30 1425 – September 17 1482), (in German Wilhelm der Tapfere), was Landgrave of Thuringia and Duke of Luxemburg. He was a younger son of Frederick I "the Warlike", elector of Saxony, and Catharine of Brunswick-Lüneburg. On June 2 1446 he married Anne of Luxembourg, daughter of Albert II of Hapsburg and Elisabeth of Luxembourg . On behalf of his wife, he became Duke of Luxembourg from 1457 to 1469. They had two daughters, Margarethe of Saxony (1449-1501) and Katharina of Saxony (1453 – 10 July 1534), who married to Duke Henry II of Münsterberg
