Anna of Saxe-Wittenberg Wife of Frederick I, Duke of Brunswick-Lüneburg (1400–1426) Parents Cecilia da Carrara Wenceslas I Children Anna of Brunswick-Lüneburg Catherine von Braunschweig Siblings Rudolf III, Duke of Saxe-Wittenberg Albert III, Duke of Saxe-Wittenberg Margaret of Saxe-Wittenberg Partners Balthasar Frederick I, Duke of Brunswick-Wolfenbüttel