Karl Alois, Prince Lichnowsky (German: Karl Alois Johann-Nepomuk Vinzenz Leonhard, Fürst Lichnowsky, also known as Carl Alois, Fürst von Lichnowsky-Woschütz; 21 June 1761 – 15 April 1814) was the second Prince Lichnowsky and a chamberlain at the Imperial Austrian court. He is remembered for his patronage of music and his relationships with Wolfgang Amadeus Mozart and Ludwig van Beethoven.

https://en.wikipedia.org/wiki/Karl_Alois,_Prince_Lichnowsky

https://en.wikipedia.org/wiki/Carolyne_zu_Sayn-Wittgenstein