Gian Gastone de' Medici, Grand Duke of Tuscany

Gian Gastone de' Medici (Giovanni Battista Gastone; 24 May 1671 – 9 July 1737) was the last Grand Duke of Tuscany of the House of Medici. He wis the second son of Grand Duke Cosimo III of Tuscany, and Marguerite Louise d'Orléans (first-cousin o Louis XIV of France). His sister, Anna Maria Luisa de' Medici, Electress Palatine, married him to Anna Maria Franziska of Saxe-Lauenburg in 1697. The two remained childless and was common knowledge that Gian Gastone was homosexual. Gian Gastone succeeded his father as Grand Duke in 1723. He was named in honour of his maternal grandfather Gaston of France, Duke of Orléans he was the last surviving male of the House of Medici.

Titles and styles

 * 24 May 1671 - 30 October 1713 His Highness Prince Gian Gastone.
 * 30 October 1713 - 31 October 1723 His Royal Highness The Grand Prince of Tuscany.
 * 31 October 1723 - 9 July 1737 His Royal Highness The Most Serene Grand Duke of Tuscany.