Leopold I of Belgium
Leopold I (Leopold George Christian Frederick; Prince of Saxe-Coburg-Saalfeld, later Prince of Saxe-Coburg and Gotha, Duke of Saxony; 16 December 1790 – 10 December 1865) was from 21 July 1831 the first King of the Belgians.  This was following Belgium's independence from the Netherlands.  He was the founder of the Belgian line of the House of Saxe-Coburg-Gotha. His children included Leopold II of Belgium and Empress Carlota of Mexico.  He was also an uncle of Queen Victoria of the United Kingdom.