Who was the last person to sign the United States Declaration of Independence?

Thomas McKean (March 19,1734-June 24,1817)—Thomas McKean was the last member of the Second Continental Congress to sign the Declaration of Independence. He was a delegate to the Continental Congress from 1774-81 and served as a delegate to the Congress of the Confederation from 1781-1783.

Mckean an American lawyer and politician from New Castle, in New Castle County, Delaware and Philadelphia. During the American Revolution he was a delegate to the Continental Congress, where he signed the United States Declaration of Independence and the Articles of Confederation.

McKean served as the President of Congress. He was at various times a member of the Federalist and Democratic-Republican parties. McKean served as President of Delaware, Chief Justice of Pennsylvania, and Governor of Pennsylvania.

He is also known for holding copious public positions in spite of his primary residence in Philadelphia, McKean remained the effective leader for American independence in Delaware. Along with George Read and Caesar Rodney, he was one of Delaware's delegates to the First Continental Congress in 1774 and the Second Continental Congress in 1775 and 1776.