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Gijsbert Haan (or Gysbert Haan) (January 3, 1801 - July 27, 1874) was the leader of the 1857 Secession of Dutch-Americans from the Reformed Church in America. He was the creator of the Christian Reformed Church in the United States and Canada. Haan was born in Hilversum, North Holland, the Netherlands and died of liver disease in Grand Rapids, Michigan.