Anna Maria Franziska of Saxe-Lauenburg (13 June 1672 – 15 October 1741) 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.
She was Grand Duchess of Tuscany as the wife of the last Medici Grand Duke, Gian Gastone.
Gian Gastone de' Medici (born Giovanni Battista Gastone; 25 May 1671 – 9 July 1737) was the seventh and last Medicean grand duke of Tuscany.
He was the second son of Grand Duke Cosimo III and Marguerite Louise d'Orléans. His sister, Electress Palatine Anna Maria Luisa, arranged his marriage to the wealthy and widowed Anna Maria Franziska of Saxe-Lauenburg in 1697. The couple despised each other and had no children. As Grand Prince Ferdinando, Gian Gastone's elder brother, predeceased Cosimo III, Gian Gastone succeeded his father in 1723.
View the full Wikipedia page for Gian Gastone de' Medici, Grand Duke of TuscanySibylle of Saxe-Lauenburg (Franziska Sibylle Auguste; 21 January 1675 – 10 July 1733) was Margravine of Baden-Baden. Born a Duchess of Saxe-Lauenburg, she was the wife of Louis William, Margrave of Baden-Baden, a famous Imperial general who was known as the Türkenlouis. She was the consort of the ruler of Baden-Baden (1690–1707) and regent (1707–1727) durng the minority of her son Louis George. Her older sister Anna Maria Franziska of Saxe-Lauenburg was the future Grand Duchess of Tuscany as the wife of Gian Gastone de' Medici.
View the full Wikipedia page for Princess Sibylle of Saxe-Lauenburg