William III, Duke of Luxembourg
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William the Brave (April 30, 1430 – 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
