Stanisław Kętrzyński

Stanisław Kętrzyński (; 10 September 1878 in Lwów, Austro-Hungary – 26 May 1950 in Warsaw, Poland) was a Polish historian, diplomat and freemason.

He was the son of Polish historian Wojciech Kętrzyński.

During the Second World War Stanisław Kętrzyński was a prisoner in the German Auschwitz concentration camp.

Among his students were Stanisław Arnold, Aleksander Gieysztor, Jadwiga Karwasińska and Adam Wolff. Provided by Wikipedia