Jacobus Sinapius or Jacobus Horcicky[a] (modern Czech: Jakub Hořčický; 1575 – 25 September 1622), later granted the title "de Tepenec"[b] ("of Tepenec"; Czech: z Tepence), was a Bohemian pharmacist and personal doctor of Holy Roman Emperor Rudolf II. His latinized name Sinapius is a translation of his family name Hořčický, which means "mustard" in Czech.
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