Otto Weininger (April 3, 1880 – October 4, 1903) was an Austrian philosopher. In 1903, he published the book Geschlecht und Charakter which gained popularity after his suicide at the age of 23. Today, the book is generally viewed as misogynistic and antisemitic in academic circles; however, it continues to be held up as a great work of lasting genius and spiritual wisdom by others.
Friedrich Wilhelm Krüger (27 February 1894 – 9 May 1945) was a Nazi official and high-ranking member of the SA and SS. Between 1939 and 1943 he was SS and Police Leader in the General Government in German-occupied Poland and in that capacity he organized and supervised numerous acts of war crimes.
Alfred Redl (March 14, 1864 – May 25, 1913) was an Austrian officer who rose to head the counter-intelligence efforts of Austria-Hungary. He was one of the leading figures of pre-World War I espionage. His term in office was marked by innovation, and he used very high technology for the time to ensnare foreign intelligence agents. But he was himself a spy for the Russians.
Baron Franz Nopcsa von Felső-Szilvás (also Baron Nopcsa von Felsö-Szilvás, Baron Nopcsa, Ferenc Nopcsa, Nopcsa Ferenc, Baron Franz Nopcsa, and Franz Baron Nopcsa) (May 3, 1877 to April 25, 1933) was a Hungarian-born aristocrat, adventurer, scholar, and paleontologist. He is widely regarded as one of the founders of paleobiology and Albanian studies.
Joseph Matthäus Aigner (18 January 1818 – 19 February 1886) was a 19th century Austrian portrait painter, who studied under Friedrich von Amerling and Carl Rahl. He painted portraits of Franz Joseph I of Austria and his wife Elizabeth of Bavaria, Franz Grillparzer, Friedrich Halm, Nikolaus Lenau, and Maximilian I of Mexico. In 1847 he married actress Fanny Matras (1828 – 1878).