DUTERTRE André (1753-1842) Portrait of Louis Bonaparte (1778-1846) Engraving titled "L. Bonaparte", younger brother of Napoleon I, depicted in bust and right profile, wearing an officer's uniform. The engraving is numbered "117", indicating that it was probably part of a suite of military portraits. Handwritten note in pencil below the image, referring to his embarkation in 1799: "Louis Bonaparte embarked at St. Jean after the 18 brumaire, de mars, bearing dispatches from his brother pr. le Directoire. 1799". This note refers to a key episode in Napoleonic history: the coup d'état of 18 brumaire (November 9, 1799), which marked the end of the Directoire and the advent of the Consulate under Napoleon Bonaparte. Louis Bonaparte, a loyal supporter of his brother at the time, is said to have played a role by carrying official dispatches to the Directoire. Good condition, mounted on a cardboard backing. Early 19th century.