The Delegates Who Didn't Sign the U.S. Constitution
In all, 70 delegates were appointed to the Constitutional Convention, but out of that 70 only 55 attended, and only 39 actually signed. Some simply refused, others got sick, still others left early. One of the most famous reasons for why certain delegates didn't sign was that the document lacked a legitimate Bill of Rights which would protect the rights of States and the freedom of individuals. Three main advocates of this movement were George Mason, Elbridge Gerry, and Edmund Randolph. Also, John Dickinson who is officially listed as a "signer," didn't sign the Constitution himself. Dickinson fell ill during the Convention and couldn't be there on signing day. So, he authorized George Read to sign for him. Here are those who did not sign:
Connecticut
Oliver Ellsworth
(April 29, 1745 - November 26, 1807)
Known for: Membership in the Committee of Detail for the Drafting of the Constitution, Third Chief Justice of the United States.
Reason for not signing: Left the Constitutional Convention early for business reasons, but later wrote the Letters of a Landholder to promote its ratification.
Georgia
William Pierce
(1753 - December 10, 1789)
Known for: Writing Character Sketches of his fellow delegates.
Reason for not signing: left early for personal and business matters.
Maryland
Massachusetts
Caleb Strong
(January 9, 1745 - November 7, 1819)
Known for: his position as sixth and tenth Governor of Massachusetts (both 1800 and 1807).
Reason for not signing: left early in opposition to the idea of the Electoral College as a means of electing the president. He believed that instead the president should be chosen by the legislature.
New Hampshire
John Pickering
(22 September 1737 - 11 April 1805)
Known for: being first federal official (served as Judge for the United States District Court for the District of New Hampshire) to have been removed from office upon conviction by impeachment.
Reason for not signing: declined to serve so he could further his law practice.
New Jersey
New York
North Carolina
Rhode Island
Rhode Island did not send any delegates.
South Carolina
Virginia
Richard Henry Lee
(January 20, 1732 - June 19, 1794)
Known for: his role during Second Continental Congress in pushing for the colonies' independence from Great Britain. (The Lee Resolution). Reason for not signing: refused to sign because the Constitution did not yet have a Bill of Rights.
Back To Top Images courtesy of Wikimedia Commons under the Creative Commons Share-Alike License 3.0

