"Johann David Ludwig Graf Yorck von Wartenburg (born von Yorck; 26 September 1759 – 4 October 1830) was a Prussian Generalfeldmarschall instrumental in the switching of the Kingdom of Prussia from a French alliance to a Russian alliance during the War of the Sixth Coalition. Ludwig van Beethoven´s "Yorckscher Marsch" is named in his honor.
The Field Marshal´s surname is Yorck; Wartenburg is a battle-honour appended to the surname as a title of distinction (cf. Britain´s Montgomery of Alamein)." - (en.wikipedia.org 30.01.2020)
