William III Landgrave of Thuringia and Duke of Luxembourg (1425–1482) Parents Catherine of Brunswick-Lüneburg Frederick I Children Katharina of Thuringia Margaret of Thuringia Siblings Anna of Saxony, Landgravine of Hesse Frederick II Sigismund of Saxony Catherine of Saxony, Electress of Brandenburg Henry of Saxony Partners Katharina von Brandenstein Catherine von Brandenstein Anne of Austria, Landgravine of Thuringia
