The person often called the "Father of the Constitution" is James Madison. He played a pivotal role in drafting and promoting the Constitution of the United States, particularly through his Virginia Plan which served as the basis for the Constitutional Convention's deliberations. Madison also contributed significantly to the ratification of the Constitution by co-authoring The Federalist Papers, which advocated for its adoption. Despite sometimes rejecting the title himself, noting that the Constitution was the work of many hands, Madison is widely regarded as the central figure in creating and shaping the U.S. Constitution.