James Madison(”Little Jim’’) The Founder more responsible for the Second Amendment than any of the others.
Section 13. That a well-regulated militia, composed of the body of the people, trained to arms, is the proper, natural, and safe defense of a free state; that standing armies, in time of peace, should be avoided as dangerous to liberty; and that in all cases the military should be under strict subordination to, and governed by, the civil power.
George Mason, Virginia Declaration of Rights (1776)