Anna Maria Franziska of Saxe-Lauenburg was the legal Duchess of Saxe-Lauenburg in the eyes of the Holy Roman Emperor, the overlord of Saxe-Lauenburg, from 1689 until 1728; however, because her distant cousin George William, Duke of Brunswick-Lüneburg, conquered the duchy by force in 1689, she exercised no control over the territory, instead living in her manors in Bohemia. Wikipedia