Patrick Henry
From RationalWiki
Patrick Henry was one of the most troublesome Founding Fathers of the United States of America. While he most eloquently spoke of the fundamental need for freedom ("Give me liberty, or give me death!"), he was fundamentally unconcerned with the freedom of others. Scratch that; he opposed a centralized state and refused to attend the Constitutional convention on the fear that it would liberate the slaves, or more precisely, his slaves. Or perhaps it was because he was afraid that the convention was going to crown a monarch, but that doesn't seem as likely.
Apparently, he later changed his mind and joined the Federalist side after seeing the French Revolution.