Karl Wittgenstein
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Karl Otto Clemens Wittgenstein (8 April 1847 – 20 January 1913) was a German-born Austrian steel tycoon. A friend of Andrew Carnegie, with whom he was often compared, at the end of the 19th century he controlled an effective monopoly on steel and iron resources within the Austro-Hungarian Empire, and had by the 1890s acquired one of the largest fortunes in the world.[1] He was also the father of concert pianist Paul Wittgenstein, philosopher Ludwig Wittgenstein and of philanthropist Margaret Stonborough-Wittgenstein.