"Joseph Fratrel, born at Épinal in 1730, was a French scholar of Baudouin in Paris, and distinguished himself as a painter and etcher. He was court painter of King Stanislaus and the Elector-Palatine Charles Theodore: in the Darmstadt Museum is a portrait of the Electress. He died at Mannheim on May 15, 1783. The following are his best-known works:" - (en.wikipedia.org 31.01.2020)
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