Klemens von Metternich
Klemens Wenzel Nepomuk Lothar, Prince von Metternich-Winneburg zu Beilstein, KOGF (; 15 May 1773 – 11 June 1859) was an Austrian diplomat who was at the center of European affairs for four decades as the Austrian Empire's foreign minister from 1809 and Chancellor from 1821 until the liberal Revolutions of 1848 forced his resignation.
William Louis, Prince of Baden
His uncle came to the conclusion that the undisciplined William Louis exerted a bad influence on his older brother, the Hereditary Prince Charles Frederick. When Charles Frederick took the journey home to Karlsruhe in order to take over the government, his uncle ordered William Louis to pursue a military career in the Netherlands.
With permission of the Margrave Charles Frederick William Louis married Wilhelmine Christine Schortmann morganatically. 
The children from this union were ennobled on January 27, 1777 by Charles Frederick. They were created barons of Seldeneck call and allowed to use the Seldeneck arms. The original Seldenecks were a Frankish noble family already extinct in 1583. The son, Wilhelm Ludwig von Seldeneck. (Born January 14, 1766; † January 10, 1827) is considered the common ancestor of all Seldenecks.