Marquis de Lafayette, in full Marie-Joseph-Paul-Yves-Roch-Gilbert du Motier, marquis de Lafayette, Lafayette also spelled La Fayette, (born September 6, 1757, Chavaniac, France—died May 20, 1834, Paris), French aristocrat who fought in the Continental Army with the American colonists against the British in the American Revolution. Later, as a leading advocate for constitutional monarchy, he became one of the most powerful men in France during the first few years of the French Revolution and duri