Johann Theobald Held

Jan Theobald Held (December 11, 1770 – June 20, 1851), also known as Johann Theobald Held was a Bohemian medical doctor, educator, musician, and composer. He was noted for his theories on psychosis, and the links between psychology and environmental conditions. He served as the dean of Charles University, Prague, and was depicted in the novel F. L. Věk by Alois Jirásek.

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