Houston Stewart ChamberlainHouston Stewart Chamberlain (; 9 September 1855 – 9 January 1927) was a British-born German philosopher who wrote works about political philosophy and natural science; he is described by Michael D. Biddiss, a contributor to the ''Oxford Dictionary of National Biography'', as a "racialist writer". Chamberlain married Eva von Bülow, the daughter of composer Richard Wagner, in December 1908, twenty-five years after Wagner's death.
Chamberlain's best known book is the two-volume ''Die Grundlagen des neunzehnten Jahrhunderts'' (''The Foundations of the Nineteenth Century''), published in 1899, which became highly influential in the pan-Germanic ''völkisch'' movements of the early 20th century and later influenced the antisemitism of Nazi racial policy. Indeed, Chamberlain has been referred to as "Hitler's John the Baptist". Provided by Wikipedia