Prince of Wagram and marshal of France, born at Versailles; served with Lafayette in the American war, and rose to distinction in the Revolution; became head of Napoleon's staff, and his companion in all his expeditions; swore fealty to the Bourbons at the restoration of 1814; on Napoleon's return retired with his family to Bamberg; threw himself from a window, maddened at the sight of Russian troops marching past to the French frontier (1753-1815).