Eugène-Rose de Beauharnais (1781-1824), son of Alexandre Vicomte de Beauharnais and his wife Marie-Rose-Josèphe, called Joséphine, born Tascher de la Pagerie who married Emperor Napoléon after the execution of the Vicomte. Napoléon styled his step-son General in 1804 and made him Vice-King of Italy in 1805. After Napoléon's fall, Eugène found a refuge in Munich where King Max I Joseph of Bavaria, whose daughter Amalia he had married in 1809, gave him the title of Duke of Leuchtenberg and Prince of Eichstätt.
Another portrait of the same sitter by the same hand, of oval shape, was sold Sotheby's London, 5 July 1984, lot 77.