"Louis Adolph Peter, 1st Prince of Sayn-Wittgenstein-Ludwigsburg-Berleburg (German: Ludwig Adolf Peter Fürst zu Sayn-Wittgenstein-Berleburg; Russian: Пётр Христиа́нович Ви́тгенштейн, tr. Pëtr Christiánovič Vítgenštejn; 17 January [O.S. 6 January] 1769 – 11 June 1843), better known as Peter Wittgenstein in English, was a Prince of the German dynasty Sayn-Wittgenstein and Field Marshal in the Imperial Russian Army during the Napoleonic wars." - (en.wikipedia.org 26.01.2020)
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