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Berthold Schwarz O.F.M. (sometimes spelled Schwartz), also known as Berthold the Black and der Schwartzer, was a legendary German (or in some accounts Danish or Greek) alchemist of the late 14th century, credited with the invention of gunpowder by 15th- through 19th-century European literature. from ' The gun and its development ' by Greener, W.W. (William Wellington) Publication date 1897
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