Marc Chagall became interested in Expressionist art when his
friend Guillaume Apollinaire introduced him to Herwarth Walden.
Walden was a German Expressionist painter.
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Hans von Herwarth's birth name is Hans-Heinrich Herwarth von
Bittenfeld.
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Karl Eberhard Herwarth von Bittenfeld died in 1884.
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Karl Eberhard Herwarth von Bittenfeld was born in 1796.