Rupert, Count Palatine of the Rhine, Duke of Bavaria (German: "Ruprecht Pfalzgraf bei Rhein, Herzog von Bayern"), commonly called Prince Rupert of the Rhine, (17 December 1619 - 19 November 1682), soldier, inventor and amateur artist in mezzotint, was a younger son of Frederick V, Elector Palatine and Elizabeth Stuart, and the nephew of King Charles I of England, who created him Duke of Cumberland and Earl of Holderness. Wikipedia
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